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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull more powerpc bits from Ben Herrenschmidt: "Here are a few more powerpc bits for this merge window. The bulk is made of two pull requests from Scott and Anatolij that I had missed previously (they arrived while I was away). Since both their branches are in -next independently, and the content has been around for a little while, they can still go in. The rest is mostly bug and regression fixes, a small series of cleanups to our pseries cpuidle code (including moving it to the right place), and one new cpuidle bakend for the powernv platform. I also wired up the new sched_attr syscalls" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (37 commits) powerpc: Wire up sched_setattr and sched_getattr syscalls powerpc/hugetlb: Replace __get_cpu_var with get_cpu_var powerpc: Make sure "cache" directory is removed when offlining cpu powerpc/mm: Fix mmap errno when MAP_FIXED is set and mapping exceeds the allowed address space powerpc/powernv/cpuidle: Back-end cpuidle driver for powernv platform. powerpc/pseries/cpuidle: smt-snooze-delay cleanup. powerpc/pseries/cpuidle: Remove MAX_IDLE_STATE macro. powerpc/pseries/cpuidle: Make cpuidle-pseries backend driver a non-module. powerpc/pseries/cpuidle: Use cpuidle_register() for initialisation. powerpc/pseries/cpuidle: Move processor_idle.c to drivers/cpuidle. powerpc: Fix 32-bit frames for signals delivered when transactional powerpc/iommu: Fix initialisation of DART iommu table powerpc/numa: Fix decimal permissions powerpc/mm: Fix compile error of pgtable-ppc64.h powerpc: Fix hw breakpoints on !HAVE_HW_BREAKPOINT configurations clk: corenet: Adds the clock binding powerpc/booke64: Guard e6500 tlb handler with CONFIG_PPC_FSL_BOOK3E powerpc/512x: dts: add MPC5125 clock specs powerpc/512x: clk: support MPC5121/5123/5125 SoC variants powerpc/512x: clk: enforce even SDHC divider values ...
This commit is contained in:
commit
4bcec913d0
134
Documentation/devicetree/bindings/clock/corenet-clock.txt
Normal file
134
Documentation/devicetree/bindings/clock/corenet-clock.txt
Normal file
@ -0,0 +1,134 @@
|
||||
* Clock Block on Freescale CoreNet Platforms
|
||||
|
||||
Freescale CoreNet chips take primary clocking input from the external
|
||||
SYSCLK signal. The SYSCLK input (frequency) is multiplied using
|
||||
multiple phase locked loops (PLL) to create a variety of frequencies
|
||||
which can then be passed to a variety of internal logic, including
|
||||
cores and peripheral IP blocks.
|
||||
Please refer to the Reference Manual for details.
|
||||
|
||||
1. Clock Block Binding
|
||||
|
||||
Required properties:
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||||
- compatible: Should contain a specific clock block compatible string
|
||||
and a single chassis clock compatible string.
|
||||
Clock block strings include, but not limited to, one of the:
|
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* "fsl,p2041-clockgen"
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* "fsl,p3041-clockgen"
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* "fsl,p4080-clockgen"
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* "fsl,p5020-clockgen"
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* "fsl,p5040-clockgen"
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* "fsl,t4240-clockgen"
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* "fsl,b4420-clockgen"
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* "fsl,b4860-clockgen"
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Chassis clock strings include:
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* "fsl,qoriq-clockgen-1.0": for chassis 1.0 clocks
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* "fsl,qoriq-clockgen-2.0": for chassis 2.0 clocks
|
||||
- reg: Describes the address of the device's resources within the
|
||||
address space defined by its parent bus, and resource zero
|
||||
represents the clock register set
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- clock-frequency: Input system clock frequency
|
||||
|
||||
Recommended properties:
|
||||
- ranges: Allows valid translation between child's address space and
|
||||
parent's. Must be present if the device has sub-nodes.
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||||
- #address-cells: Specifies the number of cells used to represent
|
||||
physical base addresses. Must be present if the device has
|
||||
sub-nodes and set to 1 if present
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- #size-cells: Specifies the number of cells used to represent
|
||||
the size of an address. Must be present if the device has
|
||||
sub-nodes and set to 1 if present
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|
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2. Clock Provider/Consumer Binding
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Most of the bindings are from the common clock binding[1].
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[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
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|
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Required properties:
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||||
- compatible : Should include one of the following:
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* "fsl,qoriq-core-pll-1.0" for core PLL clocks (v1.0)
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* "fsl,qoriq-core-pll-2.0" for core PLL clocks (v2.0)
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* "fsl,qoriq-core-mux-1.0" for core mux clocks (v1.0)
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* "fsl,qoriq-core-mux-2.0" for core mux clocks (v2.0)
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* "fsl,qoriq-sysclk-1.0": for input system clock (v1.0).
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It takes parent's clock-frequency as its clock.
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* "fsl,qoriq-sysclk-2.0": for input system clock (v2.0).
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It takes parent's clock-frequency as its clock.
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- #clock-cells: From common clock binding. The number of cells in a
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clock-specifier. Should be <0> for "fsl,qoriq-sysclk-[1,2].0"
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clocks, or <1> for "fsl,qoriq-core-pll-[1,2].0" clocks.
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||||
For "fsl,qoriq-core-pll-[1,2].0" clocks, the single
|
||||
clock-specifier cell may take the following values:
|
||||
* 0 - equal to the PLL frequency
|
||||
* 1 - equal to the PLL frequency divided by 2
|
||||
* 2 - equal to the PLL frequency divided by 4
|
||||
|
||||
Recommended properties:
|
||||
- clocks: Should be the phandle of input parent clock
|
||||
- clock-names: From common clock binding, indicates the clock name
|
||||
- clock-output-names: From common clock binding, indicates the names of
|
||||
output clocks
|
||||
- reg: Should be the offset and length of clock block base address.
|
||||
The length should be 4.
|
||||
|
||||
Example for clock block and clock provider:
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/ {
|
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clockgen: global-utilities@e1000 {
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||||
compatible = "fsl,p5020-clockgen", "fsl,qoriq-clockgen-1.0";
|
||||
ranges = <0x0 0xe1000 0x1000>;
|
||||
clock-frequency = <133333333>;
|
||||
reg = <0xe1000 0x1000>;
|
||||
#address-cells = <1>;
|
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#size-cells = <1>;
|
||||
|
||||
sysclk: sysclk {
|
||||
#clock-cells = <0>;
|
||||
compatible = "fsl,qoriq-sysclk-1.0";
|
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clock-output-names = "sysclk";
|
||||
}
|
||||
|
||||
pll0: pll0@800 {
|
||||
#clock-cells = <1>;
|
||||
reg = <0x800 0x4>;
|
||||
compatible = "fsl,qoriq-core-pll-1.0";
|
||||
clocks = <&sysclk>;
|
||||
clock-output-names = "pll0", "pll0-div2";
|
||||
};
|
||||
|
||||
pll1: pll1@820 {
|
||||
#clock-cells = <1>;
|
||||
reg = <0x820 0x4>;
|
||||
compatible = "fsl,qoriq-core-pll-1.0";
|
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clocks = <&sysclk>;
|
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clock-output-names = "pll1", "pll1-div2";
|
||||
};
|
||||
|
||||
mux0: mux0@0 {
|
||||
#clock-cells = <0>;
|
||||
reg = <0x0 0x4>;
|
||||
compatible = "fsl,qoriq-core-mux-1.0";
|
||||
clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>;
|
||||
clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2";
|
||||
clock-output-names = "cmux0";
|
||||
};
|
||||
|
||||
mux1: mux1@20 {
|
||||
#clock-cells = <0>;
|
||||
reg = <0x20 0x4>;
|
||||
compatible = "fsl,qoriq-core-mux-1.0";
|
||||
clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>;
|
||||
clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2";
|
||||
clock-output-names = "cmux1";
|
||||
};
|
||||
};
|
||||
}
|
||||
|
||||
Example for clock consumer:
|
||||
|
||||
/ {
|
||||
cpu0: PowerPC,e5500@0 {
|
||||
...
|
||||
clocks = <&mux0>;
|
||||
...
|
||||
};
|
||||
}
|
@ -532,6 +532,7 @@ config PPC_16K_PAGES
|
||||
|
||||
config PPC_64K_PAGES
|
||||
bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
|
||||
depends on !PPC_FSL_BOOK3E
|
||||
select PPC_HAS_HASH_64K if PPC_STD_MMU_64
|
||||
|
||||
config PPC_256K_PAGES
|
||||
@ -1045,11 +1046,6 @@ config KEYS_COMPAT
|
||||
|
||||
source "crypto/Kconfig"
|
||||
|
||||
config PPC_CLOCK
|
||||
bool
|
||||
default n
|
||||
select HAVE_CLK
|
||||
|
||||
config PPC_LIB_RHEAP
|
||||
bool
|
||||
|
||||
|
@ -139,7 +139,14 @@
|
||||
};
|
||||
};
|
||||
|
||||
clocks {
|
||||
osc {
|
||||
clock-frequency = <25000000>;
|
||||
};
|
||||
};
|
||||
|
||||
soc@80000000 {
|
||||
bus-frequency = <80000000>; /* 80 MHz ips bus */
|
||||
|
||||
clock@f00 {
|
||||
compatible = "fsl,mpc5121rev2-clock", "fsl,mpc5121-clock";
|
||||
|
@ -9,6 +9,8 @@
|
||||
* option) any later version.
|
||||
*/
|
||||
|
||||
#include <dt-bindings/clock/mpc512x-clock.h>
|
||||
|
||||
/dts-v1/;
|
||||
|
||||
/ {
|
||||
@ -49,6 +51,10 @@
|
||||
compatible = "fsl,mpc5121-mbx";
|
||||
reg = <0x20000000 0x4000>;
|
||||
interrupts = <66 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_MBX_BUS>,
|
||||
<&clks MPC512x_CLK_MBX_3D>,
|
||||
<&clks MPC512x_CLK_MBX>;
|
||||
clock-names = "mbx-bus", "mbx-3d", "mbx";
|
||||
};
|
||||
|
||||
sram@30000000 {
|
||||
@ -62,6 +68,8 @@
|
||||
interrupts = <6 8>;
|
||||
#address-cells = <1>;
|
||||
#size-cells = <1>;
|
||||
clocks = <&clks MPC512x_CLK_NFC>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
localbus@80000020 {
|
||||
@ -73,6 +81,17 @@
|
||||
ranges = <0x0 0x0 0xfc000000 0x04000000>;
|
||||
};
|
||||
|
||||
clocks {
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
|
||||
osc: osc {
|
||||
compatible = "fixed-clock";
|
||||
#clock-cells = <0>;
|
||||
clock-frequency = <33000000>;
|
||||
};
|
||||
};
|
||||
|
||||
soc@80000000 {
|
||||
compatible = "fsl,mpc5121-immr";
|
||||
#address-cells = <1>;
|
||||
@ -117,9 +136,12 @@
|
||||
};
|
||||
|
||||
/* Clock control */
|
||||
clock@f00 {
|
||||
clks: clock@f00 {
|
||||
compatible = "fsl,mpc5121-clock";
|
||||
reg = <0xf00 0x100>;
|
||||
#clock-cells = <1>;
|
||||
clocks = <&osc>;
|
||||
clock-names = "osc";
|
||||
};
|
||||
|
||||
/* Power Management Controller */
|
||||
@ -139,12 +161,24 @@
|
||||
compatible = "fsl,mpc5121-mscan";
|
||||
reg = <0x1300 0x80>;
|
||||
interrupts = <12 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_BDLC>,
|
||||
<&clks MPC512x_CLK_IPS>,
|
||||
<&clks MPC512x_CLK_SYS>,
|
||||
<&clks MPC512x_CLK_REF>,
|
||||
<&clks MPC512x_CLK_MSCAN0_MCLK>;
|
||||
clock-names = "ipg", "ips", "sys", "ref", "mclk";
|
||||
};
|
||||
|
||||
can@1380 {
|
||||
compatible = "fsl,mpc5121-mscan";
|
||||
reg = <0x1380 0x80>;
|
||||
interrupts = <13 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_BDLC>,
|
||||
<&clks MPC512x_CLK_IPS>,
|
||||
<&clks MPC512x_CLK_SYS>,
|
||||
<&clks MPC512x_CLK_REF>,
|
||||
<&clks MPC512x_CLK_MSCAN1_MCLK>;
|
||||
clock-names = "ipg", "ips", "sys", "ref", "mclk";
|
||||
};
|
||||
|
||||
sdhc@1500 {
|
||||
@ -153,6 +187,9 @@
|
||||
interrupts = <8 0x8>;
|
||||
dmas = <&dma0 30>;
|
||||
dma-names = "rx-tx";
|
||||
clocks = <&clks MPC512x_CLK_IPS>,
|
||||
<&clks MPC512x_CLK_SDHC>;
|
||||
clock-names = "ipg", "per";
|
||||
};
|
||||
|
||||
i2c@1700 {
|
||||
@ -161,6 +198,8 @@
|
||||
compatible = "fsl,mpc5121-i2c", "fsl-i2c";
|
||||
reg = <0x1700 0x20>;
|
||||
interrupts = <9 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_I2C>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
i2c@1720 {
|
||||
@ -169,6 +208,8 @@
|
||||
compatible = "fsl,mpc5121-i2c", "fsl-i2c";
|
||||
reg = <0x1720 0x20>;
|
||||
interrupts = <10 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_I2C>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
i2c@1740 {
|
||||
@ -177,6 +218,8 @@
|
||||
compatible = "fsl,mpc5121-i2c", "fsl-i2c";
|
||||
reg = <0x1740 0x20>;
|
||||
interrupts = <11 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_I2C>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
i2ccontrol@1760 {
|
||||
@ -188,30 +231,48 @@
|
||||
compatible = "fsl,mpc5121-axe";
|
||||
reg = <0x2000 0x100>;
|
||||
interrupts = <42 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_AXE>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
display@2100 {
|
||||
compatible = "fsl,mpc5121-diu";
|
||||
reg = <0x2100 0x100>;
|
||||
interrupts = <64 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_DIU>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
can@2300 {
|
||||
compatible = "fsl,mpc5121-mscan";
|
||||
reg = <0x2300 0x80>;
|
||||
interrupts = <90 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_BDLC>,
|
||||
<&clks MPC512x_CLK_IPS>,
|
||||
<&clks MPC512x_CLK_SYS>,
|
||||
<&clks MPC512x_CLK_REF>,
|
||||
<&clks MPC512x_CLK_MSCAN2_MCLK>;
|
||||
clock-names = "ipg", "ips", "sys", "ref", "mclk";
|
||||
};
|
||||
|
||||
can@2380 {
|
||||
compatible = "fsl,mpc5121-mscan";
|
||||
reg = <0x2380 0x80>;
|
||||
interrupts = <91 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_BDLC>,
|
||||
<&clks MPC512x_CLK_IPS>,
|
||||
<&clks MPC512x_CLK_SYS>,
|
||||
<&clks MPC512x_CLK_REF>,
|
||||
<&clks MPC512x_CLK_MSCAN3_MCLK>;
|
||||
clock-names = "ipg", "ips", "sys", "ref", "mclk";
|
||||
};
|
||||
|
||||
viu@2400 {
|
||||
compatible = "fsl,mpc5121-viu";
|
||||
reg = <0x2400 0x400>;
|
||||
interrupts = <67 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_VIU>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
mdio@2800 {
|
||||
@ -219,6 +280,8 @@
|
||||
reg = <0x2800 0x800>;
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
clocks = <&clks MPC512x_CLK_FEC>;
|
||||
clock-names = "per";
|
||||
};
|
||||
|
||||
eth0: ethernet@2800 {
|
||||
@ -227,6 +290,8 @@
|
||||
reg = <0x2800 0x800>;
|
||||
local-mac-address = [ 00 00 00 00 00 00 ];
|
||||
interrupts = <4 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_FEC>;
|
||||
clock-names = "per";
|
||||
};
|
||||
|
||||
/* USB1 using external ULPI PHY */
|
||||
@ -238,6 +303,8 @@
|
||||
interrupts = <43 0x8>;
|
||||
dr_mode = "otg";
|
||||
phy_type = "ulpi";
|
||||
clocks = <&clks MPC512x_CLK_USB1>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
/* USB0 using internal UTMI PHY */
|
||||
@ -249,6 +316,8 @@
|
||||
interrupts = <44 0x8>;
|
||||
dr_mode = "otg";
|
||||
phy_type = "utmi_wide";
|
||||
clocks = <&clks MPC512x_CLK_USB2>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
/* IO control */
|
||||
@ -267,6 +336,8 @@
|
||||
compatible = "fsl,mpc5121-pata";
|
||||
reg = <0x10200 0x100>;
|
||||
interrupts = <5 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_PATA>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
/* 512x PSCs are not 52xx PSC compatible */
|
||||
@ -278,6 +349,9 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC0>,
|
||||
<&clks MPC512x_CLK_PSC0_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
/* PSC1 */
|
||||
@ -287,6 +361,9 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC1>,
|
||||
<&clks MPC512x_CLK_PSC1_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
/* PSC2 */
|
||||
@ -296,6 +373,9 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC2>,
|
||||
<&clks MPC512x_CLK_PSC2_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
/* PSC3 */
|
||||
@ -305,6 +385,9 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC3>,
|
||||
<&clks MPC512x_CLK_PSC3_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
/* PSC4 */
|
||||
@ -314,6 +397,9 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC4>,
|
||||
<&clks MPC512x_CLK_PSC4_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
/* PSC5 */
|
||||
@ -323,6 +409,9 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC5>,
|
||||
<&clks MPC512x_CLK_PSC5_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
/* PSC6 */
|
||||
@ -332,6 +421,9 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC6>,
|
||||
<&clks MPC512x_CLK_PSC6_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
/* PSC7 */
|
||||
@ -341,6 +433,9 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC7>,
|
||||
<&clks MPC512x_CLK_PSC7_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
/* PSC8 */
|
||||
@ -350,6 +445,9 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC8>,
|
||||
<&clks MPC512x_CLK_PSC8_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
/* PSC9 */
|
||||
@ -359,6 +457,9 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC9>,
|
||||
<&clks MPC512x_CLK_PSC9_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
/* PSC10 */
|
||||
@ -368,6 +469,9 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC10>,
|
||||
<&clks MPC512x_CLK_PSC10_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
/* PSC11 */
|
||||
@ -377,12 +481,17 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC11>,
|
||||
<&clks MPC512x_CLK_PSC11_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
pscfifo@11f00 {
|
||||
compatible = "fsl,mpc5121-psc-fifo";
|
||||
reg = <0x11f00 0x100>;
|
||||
interrupts = <40 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_PSC_FIFO>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
dma0: dma@14000 {
|
||||
@ -400,6 +509,8 @@
|
||||
#address-cells = <3>;
|
||||
#size-cells = <2>;
|
||||
#interrupt-cells = <1>;
|
||||
clocks = <&clks MPC512x_CLK_PCI>;
|
||||
clock-names = "ipg";
|
||||
|
||||
reg = <0x80008500 0x100 /* internal registers */
|
||||
0x80008300 0x8>; /* config space access registers */
|
||||
|
@ -12,6 +12,8 @@
|
||||
* option) any later version.
|
||||
*/
|
||||
|
||||
#include <dt-bindings/clock/mpc512x-clock.h>
|
||||
|
||||
/dts-v1/;
|
||||
|
||||
/ {
|
||||
@ -54,6 +56,17 @@
|
||||
reg = <0x30000000 0x08000>; // 32K at 0x30000000
|
||||
};
|
||||
|
||||
clocks {
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
|
||||
osc: osc {
|
||||
compatible = "fixed-clock";
|
||||
#clock-cells = <0>;
|
||||
clock-frequency = <33000000>;
|
||||
};
|
||||
};
|
||||
|
||||
soc@80000000 {
|
||||
compatible = "fsl,mpc5121-immr";
|
||||
#address-cells = <1>;
|
||||
@ -87,9 +100,12 @@
|
||||
reg = <0xe00 0x100>;
|
||||
};
|
||||
|
||||
clock@f00 { // Clock control
|
||||
clks: clock@f00 { // Clock control
|
||||
compatible = "fsl,mpc5121-clock";
|
||||
reg = <0xf00 0x100>;
|
||||
#clock-cells = <1>;
|
||||
clocks = <&osc>;
|
||||
clock-names = "osc";
|
||||
};
|
||||
|
||||
pmc@1000{ // Power Management Controller
|
||||
@ -114,18 +130,33 @@
|
||||
compatible = "fsl,mpc5121-mscan";
|
||||
interrupts = <12 0x8>;
|
||||
reg = <0x1300 0x80>;
|
||||
clocks = <&clks MPC512x_CLK_BDLC>,
|
||||
<&clks MPC512x_CLK_IPS>,
|
||||
<&clks MPC512x_CLK_SYS>,
|
||||
<&clks MPC512x_CLK_REF>,
|
||||
<&clks MPC512x_CLK_MSCAN0_MCLK>;
|
||||
clock-names = "ipg", "ips", "sys", "ref", "mclk";
|
||||
};
|
||||
|
||||
can@1380 {
|
||||
compatible = "fsl,mpc5121-mscan";
|
||||
interrupts = <13 0x8>;
|
||||
reg = <0x1380 0x80>;
|
||||
clocks = <&clks MPC512x_CLK_BDLC>,
|
||||
<&clks MPC512x_CLK_IPS>,
|
||||
<&clks MPC512x_CLK_SYS>,
|
||||
<&clks MPC512x_CLK_REF>,
|
||||
<&clks MPC512x_CLK_MSCAN1_MCLK>;
|
||||
clock-names = "ipg", "ips", "sys", "ref", "mclk";
|
||||
};
|
||||
|
||||
sdhc@1500 {
|
||||
compatible = "fsl,mpc5121-sdhc";
|
||||
interrupts = <8 0x8>;
|
||||
reg = <0x1500 0x100>;
|
||||
clocks = <&clks MPC512x_CLK_IPS>,
|
||||
<&clks MPC512x_CLK_SDHC>;
|
||||
clock-names = "ipg", "per";
|
||||
};
|
||||
|
||||
i2c@1700 {
|
||||
@ -134,6 +165,8 @@
|
||||
compatible = "fsl,mpc5121-i2c", "fsl-i2c";
|
||||
reg = <0x1700 0x20>;
|
||||
interrupts = <0x9 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_I2C>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
i2c@1720 {
|
||||
@ -142,6 +175,8 @@
|
||||
compatible = "fsl,mpc5121-i2c", "fsl-i2c";
|
||||
reg = <0x1720 0x20>;
|
||||
interrupts = <0xa 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_I2C>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
i2c@1740 {
|
||||
@ -150,6 +185,8 @@
|
||||
compatible = "fsl,mpc5121-i2c", "fsl-i2c";
|
||||
reg = <0x1740 0x20>;
|
||||
interrupts = <0xb 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_I2C>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
i2ccontrol@1760 {
|
||||
@ -161,6 +198,8 @@
|
||||
compatible = "fsl,mpc5121-diu";
|
||||
reg = <0x2100 0x100>;
|
||||
interrupts = <64 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_DIU>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
mdio@2800 {
|
||||
@ -180,6 +219,8 @@
|
||||
interrupts = <4 0x8>;
|
||||
phy-handle = < &phy0 >;
|
||||
phy-connection-type = "rmii";
|
||||
clocks = <&clks MPC512x_CLK_FEC>;
|
||||
clock-names = "per";
|
||||
};
|
||||
|
||||
// IO control
|
||||
@ -200,6 +241,8 @@
|
||||
interrupts = <43 0x8>;
|
||||
dr_mode = "host";
|
||||
phy_type = "ulpi";
|
||||
clocks = <&clks MPC512x_CLK_USB1>;
|
||||
clock-names = "ipg";
|
||||
status = "disabled";
|
||||
};
|
||||
|
||||
@ -211,6 +254,9 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC1>,
|
||||
<&clks MPC512x_CLK_PSC1_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
// PSC9 uart1 aka ttyPSC1
|
||||
@ -220,12 +266,17 @@
|
||||
interrupts = <40 0x8>;
|
||||
fsl,rx-fifo-size = <16>;
|
||||
fsl,tx-fifo-size = <16>;
|
||||
clocks = <&clks MPC512x_CLK_PSC9>,
|
||||
<&clks MPC512x_CLK_PSC9_MCLK>;
|
||||
clock-names = "ipg", "mclk";
|
||||
};
|
||||
|
||||
pscfifo@11f00 {
|
||||
compatible = "fsl,mpc5121-psc-fifo";
|
||||
reg = <0x11f00 0x100>;
|
||||
interrupts = <40 0x8>;
|
||||
clocks = <&clks MPC512x_CLK_PSC_FIFO>;
|
||||
clock-names = "ipg";
|
||||
};
|
||||
|
||||
dma@14000 {
|
||||
|
@ -1,20 +0,0 @@
|
||||
#ifndef __ASM_POWERPC_CLK_INTERFACE_H
|
||||
#define __ASM_POWERPC_CLK_INTERFACE_H
|
||||
|
||||
#include <linux/clk.h>
|
||||
|
||||
struct clk_interface {
|
||||
struct clk* (*clk_get) (struct device *dev, const char *id);
|
||||
int (*clk_enable) (struct clk *clk);
|
||||
void (*clk_disable) (struct clk *clk);
|
||||
unsigned long (*clk_get_rate) (struct clk *clk);
|
||||
void (*clk_put) (struct clk *clk);
|
||||
long (*clk_round_rate) (struct clk *clk, unsigned long rate);
|
||||
int (*clk_set_rate) (struct clk *clk, unsigned long rate);
|
||||
int (*clk_set_parent) (struct clk *clk, struct clk *parent);
|
||||
struct clk* (*clk_get_parent) (struct clk *clk);
|
||||
};
|
||||
|
||||
extern struct clk_interface clk_functions;
|
||||
|
||||
#endif /* __ASM_POWERPC_CLK_INTERFACE_H */
|
@ -37,7 +37,12 @@ struct mpc512x_ccm {
|
||||
u32 cccr; /* CFM Clock Control Register */
|
||||
u32 dccr; /* DIU Clock Control Register */
|
||||
u32 mscan_ccr[4]; /* MSCAN Clock Control Registers */
|
||||
u8 res[0x98]; /* Reserved */
|
||||
u32 out_ccr[4]; /* OUT CLK Configure Registers */
|
||||
u32 rsv0[2]; /* Reserved */
|
||||
u32 scfr3; /* System Clock Frequency Register 3 */
|
||||
u32 rsv1[3]; /* Reserved */
|
||||
u32 spll_lock_cnt; /* System PLL Lock Counter */
|
||||
u8 res[0x6c]; /* Reserved */
|
||||
};
|
||||
|
||||
/*
|
||||
|
@ -560,9 +560,9 @@ extern void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
|
||||
pmd_t *pmdp);
|
||||
|
||||
#define pmd_move_must_withdraw pmd_move_must_withdraw
|
||||
typedef struct spinlock spinlock_t;
|
||||
static inline int pmd_move_must_withdraw(spinlock_t *new_pmd_ptl,
|
||||
spinlock_t *old_pmd_ptl)
|
||||
struct spinlock;
|
||||
static inline int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
|
||||
struct spinlock *old_pmd_ptl)
|
||||
{
|
||||
/*
|
||||
* Archs like ppc64 use pgtable to store per pmd
|
||||
|
@ -450,13 +450,6 @@ enum idle_boot_override {IDLE_NO_OVERRIDE = 0, IDLE_POWERSAVE_OFF};
|
||||
|
||||
extern int powersave_nap; /* set if nap mode can be used in idle loop */
|
||||
extern void power7_nap(void);
|
||||
|
||||
#ifdef CONFIG_PSERIES_IDLE
|
||||
extern void update_smt_snooze_delay(int cpu, int residency);
|
||||
#else
|
||||
static inline void update_smt_snooze_delay(int cpu, int residency) {}
|
||||
#endif
|
||||
|
||||
extern void flush_instruction_cache(void);
|
||||
extern void hard_reset_now(void);
|
||||
extern void poweroff_now(void);
|
||||
|
@ -359,3 +359,5 @@ COMPAT_SYS(process_vm_readv)
|
||||
COMPAT_SYS(process_vm_writev)
|
||||
SYSCALL(finit_module)
|
||||
SYSCALL(ni_syscall) /* sys_kcmp */
|
||||
SYSCALL_SPU(sched_setattr)
|
||||
SYSCALL_SPU(sched_getattr)
|
||||
|
@ -12,7 +12,7 @@
|
||||
#include <uapi/asm/unistd.h>
|
||||
|
||||
|
||||
#define __NR_syscalls 355
|
||||
#define __NR_syscalls 357
|
||||
|
||||
#define __NR__exit __NR_exit
|
||||
#define NR_syscalls __NR_syscalls
|
||||
|
@ -377,6 +377,7 @@
|
||||
#define __NR_process_vm_writev 352
|
||||
#define __NR_finit_module 353
|
||||
#define __NR_kcmp 354
|
||||
|
||||
#define __NR_sched_setattr 355
|
||||
#define __NR_sched_getattr 356
|
||||
|
||||
#endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */
|
||||
|
@ -48,7 +48,6 @@ obj-$(CONFIG_ALTIVEC) += vecemu.o
|
||||
obj-$(CONFIG_PPC_970_NAP) += idle_power4.o
|
||||
obj-$(CONFIG_PPC_P7_NAP) += idle_power7.o
|
||||
obj-$(CONFIG_PPC_OF) += of_platform.o prom_parse.o
|
||||
obj-$(CONFIG_PPC_CLOCK) += clock.o
|
||||
procfs-y := proc_powerpc.o
|
||||
obj-$(CONFIG_PROC_FS) += $(procfs-y)
|
||||
rtaspci-$(CONFIG_PPC64)-$(CONFIG_PCI) := rtas_pci.o
|
||||
|
@ -793,6 +793,9 @@ static void remove_cache_dir(struct cache_dir *cache_dir)
|
||||
{
|
||||
remove_index_dirs(cache_dir);
|
||||
|
||||
/* Remove cache dir from sysfs */
|
||||
kobject_del(cache_dir->kobj);
|
||||
|
||||
kobject_put(cache_dir->kobj);
|
||||
|
||||
kfree(cache_dir);
|
||||
|
@ -1,82 +0,0 @@
|
||||
/*
|
||||
* Dummy clk implementations for powerpc.
|
||||
* These need to be overridden in platform code.
|
||||
*/
|
||||
|
||||
#include <linux/clk.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/export.h>
|
||||
#include <asm/clk_interface.h>
|
||||
|
||||
struct clk_interface clk_functions;
|
||||
|
||||
struct clk *clk_get(struct device *dev, const char *id)
|
||||
{
|
||||
if (clk_functions.clk_get)
|
||||
return clk_functions.clk_get(dev, id);
|
||||
return ERR_PTR(-ENOSYS);
|
||||
}
|
||||
EXPORT_SYMBOL(clk_get);
|
||||
|
||||
void clk_put(struct clk *clk)
|
||||
{
|
||||
if (clk_functions.clk_put)
|
||||
clk_functions.clk_put(clk);
|
||||
}
|
||||
EXPORT_SYMBOL(clk_put);
|
||||
|
||||
int clk_enable(struct clk *clk)
|
||||
{
|
||||
if (clk_functions.clk_enable)
|
||||
return clk_functions.clk_enable(clk);
|
||||
return -ENOSYS;
|
||||
}
|
||||
EXPORT_SYMBOL(clk_enable);
|
||||
|
||||
void clk_disable(struct clk *clk)
|
||||
{
|
||||
if (clk_functions.clk_disable)
|
||||
clk_functions.clk_disable(clk);
|
||||
}
|
||||
EXPORT_SYMBOL(clk_disable);
|
||||
|
||||
unsigned long clk_get_rate(struct clk *clk)
|
||||
{
|
||||
if (clk_functions.clk_get_rate)
|
||||
return clk_functions.clk_get_rate(clk);
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(clk_get_rate);
|
||||
|
||||
long clk_round_rate(struct clk *clk, unsigned long rate)
|
||||
{
|
||||
if (clk_functions.clk_round_rate)
|
||||
return clk_functions.clk_round_rate(clk, rate);
|
||||
return -ENOSYS;
|
||||
}
|
||||
EXPORT_SYMBOL(clk_round_rate);
|
||||
|
||||
int clk_set_rate(struct clk *clk, unsigned long rate)
|
||||
{
|
||||
if (clk_functions.clk_set_rate)
|
||||
return clk_functions.clk_set_rate(clk, rate);
|
||||
return -ENOSYS;
|
||||
}
|
||||
EXPORT_SYMBOL(clk_set_rate);
|
||||
|
||||
struct clk *clk_get_parent(struct clk *clk)
|
||||
{
|
||||
if (clk_functions.clk_get_parent)
|
||||
return clk_functions.clk_get_parent(clk);
|
||||
return ERR_PTR(-ENOSYS);
|
||||
}
|
||||
EXPORT_SYMBOL(clk_get_parent);
|
||||
|
||||
int clk_set_parent(struct clk *clk, struct clk *parent)
|
||||
{
|
||||
if (clk_functions.clk_set_parent)
|
||||
return clk_functions.clk_set_parent(clk, parent);
|
||||
return -ENOSYS;
|
||||
}
|
||||
EXPORT_SYMBOL(clk_set_parent);
|
@ -811,7 +811,7 @@ struct task_struct *__switch_to(struct task_struct *prev,
|
||||
* schedule DABR
|
||||
*/
|
||||
#ifndef CONFIG_HAVE_HW_BREAKPOINT
|
||||
if (unlikely(hw_brk_match(&__get_cpu_var(current_brk), &new->thread.hw_brk)))
|
||||
if (unlikely(!hw_brk_match(&__get_cpu_var(current_brk), &new->thread.hw_brk)))
|
||||
set_breakpoint(&new->thread.hw_brk);
|
||||
#endif /* CONFIG_HAVE_HW_BREAKPOINT */
|
||||
#endif
|
||||
|
@ -1022,29 +1022,24 @@ int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
|
||||
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
|
||||
tm_frame = &rt_sf->uc_transact.uc_mcontext;
|
||||
if (MSR_TM_ACTIVE(regs->msr)) {
|
||||
if (__put_user((unsigned long)&rt_sf->uc_transact,
|
||||
&rt_sf->uc.uc_link) ||
|
||||
__put_user((unsigned long)tm_frame,
|
||||
&rt_sf->uc_transact.uc_regs))
|
||||
goto badframe;
|
||||
if (save_tm_user_regs(regs, frame, tm_frame, sigret))
|
||||
goto badframe;
|
||||
}
|
||||
else
|
||||
#endif
|
||||
{
|
||||
if (__put_user(0, &rt_sf->uc.uc_link))
|
||||
goto badframe;
|
||||
if (save_user_regs(regs, frame, tm_frame, sigret, 1))
|
||||
goto badframe;
|
||||
}
|
||||
regs->link = tramp;
|
||||
|
||||
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
|
||||
if (MSR_TM_ACTIVE(regs->msr)) {
|
||||
if (__put_user((unsigned long)&rt_sf->uc_transact,
|
||||
&rt_sf->uc.uc_link)
|
||||
|| __put_user((unsigned long)tm_frame, &rt_sf->uc_transact.uc_regs))
|
||||
goto badframe;
|
||||
}
|
||||
else
|
||||
#endif
|
||||
if (__put_user(0, &rt_sf->uc.uc_link))
|
||||
goto badframe;
|
||||
|
||||
current->thread.fp_state.fpscr = 0; /* turn off all fp exceptions */
|
||||
|
||||
/* create a stack frame for the caller of the handler */
|
||||
|
@ -51,8 +51,6 @@ static ssize_t store_smt_snooze_delay(struct device *dev,
|
||||
return -EINVAL;
|
||||
|
||||
per_cpu(smt_snooze_delay, cpu->dev.id) = snooze;
|
||||
update_smt_snooze_delay(cpu->dev.id, snooze);
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
|
@ -472,12 +472,13 @@ static void hugepd_free(struct mmu_gather *tlb, void *hugepte)
|
||||
{
|
||||
struct hugepd_freelist **batchp;
|
||||
|
||||
batchp = &__get_cpu_var(hugepd_freelist_cur);
|
||||
batchp = &get_cpu_var(hugepd_freelist_cur);
|
||||
|
||||
if (atomic_read(&tlb->mm->mm_users) < 2 ||
|
||||
cpumask_equal(mm_cpumask(tlb->mm),
|
||||
cpumask_of(smp_processor_id()))) {
|
||||
kmem_cache_free(hugepte_cache, hugepte);
|
||||
put_cpu_var(hugepd_freelist_cur);
|
||||
return;
|
||||
}
|
||||
|
||||
@ -491,6 +492,7 @@ static void hugepd_free(struct mmu_gather *tlb, void *hugepte)
|
||||
call_rcu_sched(&(*batchp)->rcu, hugepd_free_rcu_callback);
|
||||
*batchp = NULL;
|
||||
}
|
||||
put_cpu_var(hugepd_freelist_cur);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
@ -1785,7 +1785,7 @@ static const struct file_operations topology_ops = {
|
||||
static int topology_update_init(void)
|
||||
{
|
||||
start_topology_update();
|
||||
proc_create("powerpc/topology_updates", 644, NULL, &topology_ops);
|
||||
proc_create("powerpc/topology_updates", 0644, NULL, &topology_ops);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
@ -408,7 +408,7 @@ unsigned long slice_get_unmapped_area(unsigned long addr, unsigned long len,
|
||||
if (fixed && (addr & ((1ul << pshift) - 1)))
|
||||
return -EINVAL;
|
||||
if (fixed && addr > (mm->task_size - len))
|
||||
return -EINVAL;
|
||||
return -ENOMEM;
|
||||
|
||||
/* If hint, make sure it matches our alignment restrictions */
|
||||
if (!fixed && addr) {
|
||||
|
@ -240,6 +240,7 @@ itlb_miss_fault_bolted:
|
||||
beq tlb_miss_common_bolted
|
||||
b itlb_miss_kernel_bolted
|
||||
|
||||
#ifdef CONFIG_PPC_FSL_BOOK3E
|
||||
/*
|
||||
* TLB miss handling for e6500 and derivatives, using hardware tablewalk.
|
||||
*
|
||||
@ -409,7 +410,7 @@ itlb_miss_fault_e6500:
|
||||
TLB_MISS_STATS_I(MMSTAT_TLB_MISS_NORM_FAULT)
|
||||
tlb_epilog_bolted
|
||||
b exc_instruction_storage_book3e
|
||||
|
||||
#endif /* CONFIG_PPC_FSL_BOOK3E */
|
||||
|
||||
/**********************************************************************
|
||||
* *
|
||||
|
@ -557,10 +557,12 @@ static void setup_mmu_htw(void)
|
||||
patch_exception(0x1c0, exc_data_tlb_miss_htw_book3e);
|
||||
patch_exception(0x1e0, exc_instruction_tlb_miss_htw_book3e);
|
||||
break;
|
||||
#ifdef CONFIG_PPC_FSL_BOOK3E
|
||||
case PPC_HTW_E6500:
|
||||
patch_exception(0x1c0, exc_data_tlb_miss_e6500_book3e);
|
||||
patch_exception(0x1e0, exc_instruction_tlb_miss_e6500_book3e);
|
||||
break;
|
||||
#endif
|
||||
}
|
||||
pr_info("MMU: Book3E HW tablewalk %s\n",
|
||||
book3e_htw_mode != PPC_HTW_NONE ? "enabled" : "not supported");
|
||||
|
@ -1,9 +1,9 @@
|
||||
config PPC_MPC512x
|
||||
bool "512x-based boards"
|
||||
depends on 6xx
|
||||
select COMMON_CLK
|
||||
select FSL_SOC
|
||||
select IPIC
|
||||
select PPC_CLOCK
|
||||
select PPC_PCI_CHOICE
|
||||
select FSL_PCI if PCI
|
||||
select ARCH_WANT_OPTIONAL_GPIOLIB
|
||||
|
@ -1,7 +1,8 @@
|
||||
#
|
||||
# Makefile for the Freescale PowerPC 512x linux kernel.
|
||||
#
|
||||
obj-y += clock.o mpc512x_shared.o
|
||||
obj-$(CONFIG_COMMON_CLK) += clock-commonclk.o
|
||||
obj-y += mpc512x_shared.o
|
||||
obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o mpc5121_ads_cpld.o
|
||||
obj-$(CONFIG_MPC512x_GENERIC) += mpc512x_generic.o
|
||||
obj-$(CONFIG_PDM360NG) += pdm360ng.o
|
||||
|
1221
arch/powerpc/platforms/512x/clock-commonclk.c
Normal file
1221
arch/powerpc/platforms/512x/clock-commonclk.c
Normal file
File diff suppressed because it is too large
Load Diff
@ -1,754 +0,0 @@
|
||||
/*
|
||||
* Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved.
|
||||
*
|
||||
* Author: John Rigby <jrigby@freescale.com>
|
||||
*
|
||||
* Implements the clk api defined in include/linux/clk.h
|
||||
*
|
||||
* Original based on linux/arch/arm/mach-integrator/clock.c
|
||||
*
|
||||
* Copyright (C) 2004 ARM Limited.
|
||||
* Written by Deep Blue Solutions Limited.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*/
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/clk.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/io.h>
|
||||
|
||||
#include <linux/of_address.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <asm/mpc5xxx.h>
|
||||
#include <asm/mpc5121.h>
|
||||
#include <asm/clk_interface.h>
|
||||
|
||||
#include "mpc512x.h"
|
||||
|
||||
#undef CLK_DEBUG
|
||||
|
||||
static int clocks_initialized;
|
||||
|
||||
#define CLK_HAS_RATE 0x1 /* has rate in MHz */
|
||||
#define CLK_HAS_CTRL 0x2 /* has control reg and bit */
|
||||
|
||||
struct clk {
|
||||
struct list_head node;
|
||||
char name[32];
|
||||
int flags;
|
||||
struct device *dev;
|
||||
unsigned long rate;
|
||||
struct module *owner;
|
||||
void (*calc) (struct clk *);
|
||||
struct clk *parent;
|
||||
int reg, bit; /* CLK_HAS_CTRL */
|
||||
int div_shift; /* only used by generic_div_clk_calc */
|
||||
};
|
||||
|
||||
static LIST_HEAD(clocks);
|
||||
static DEFINE_MUTEX(clocks_mutex);
|
||||
|
||||
static struct clk *mpc5121_clk_get(struct device *dev, const char *id)
|
||||
{
|
||||
struct clk *p, *clk = ERR_PTR(-ENOENT);
|
||||
int dev_match;
|
||||
int id_match;
|
||||
|
||||
if (dev == NULL || id == NULL)
|
||||
return clk;
|
||||
|
||||
mutex_lock(&clocks_mutex);
|
||||
list_for_each_entry(p, &clocks, node) {
|
||||
dev_match = id_match = 0;
|
||||
|
||||
if (dev == p->dev)
|
||||
dev_match++;
|
||||
if (strcmp(id, p->name) == 0)
|
||||
id_match++;
|
||||
if ((dev_match || id_match) && try_module_get(p->owner)) {
|
||||
clk = p;
|
||||
break;
|
||||
}
|
||||
}
|
||||
mutex_unlock(&clocks_mutex);
|
||||
|
||||
return clk;
|
||||
}
|
||||
|
||||
#ifdef CLK_DEBUG
|
||||
static void dump_clocks(void)
|
||||
{
|
||||
struct clk *p;
|
||||
|
||||
mutex_lock(&clocks_mutex);
|
||||
printk(KERN_INFO "CLOCKS:\n");
|
||||
list_for_each_entry(p, &clocks, node) {
|
||||
pr_info(" %s=%ld", p->name, p->rate);
|
||||
if (p->parent)
|
||||
pr_cont(" %s=%ld", p->parent->name,
|
||||
p->parent->rate);
|
||||
if (p->flags & CLK_HAS_CTRL)
|
||||
pr_cont(" reg/bit=%d/%d", p->reg, p->bit);
|
||||
pr_cont("\n");
|
||||
}
|
||||
mutex_unlock(&clocks_mutex);
|
||||
}
|
||||
#define DEBUG_CLK_DUMP() dump_clocks()
|
||||
#else
|
||||
#define DEBUG_CLK_DUMP()
|
||||
#endif
|
||||
|
||||
|
||||
static void mpc5121_clk_put(struct clk *clk)
|
||||
{
|
||||
module_put(clk->owner);
|
||||
}
|
||||
|
||||
#define NRPSC 12
|
||||
|
||||
struct mpc512x_clockctl {
|
||||
u32 spmr; /* System PLL Mode Reg */
|
||||
u32 sccr[2]; /* System Clk Ctrl Reg 1 & 2 */
|
||||
u32 scfr1; /* System Clk Freq Reg 1 */
|
||||
u32 scfr2; /* System Clk Freq Reg 2 */
|
||||
u32 reserved;
|
||||
u32 bcr; /* Bread Crumb Reg */
|
||||
u32 pccr[NRPSC]; /* PSC Clk Ctrl Reg 0-11 */
|
||||
u32 spccr; /* SPDIF Clk Ctrl Reg */
|
||||
u32 cccr; /* CFM Clk Ctrl Reg */
|
||||
u32 dccr; /* DIU Clk Cnfg Reg */
|
||||
};
|
||||
|
||||
static struct mpc512x_clockctl __iomem *clockctl;
|
||||
|
||||
static int mpc5121_clk_enable(struct clk *clk)
|
||||
{
|
||||
unsigned int mask;
|
||||
|
||||
if (clk->flags & CLK_HAS_CTRL) {
|
||||
mask = in_be32(&clockctl->sccr[clk->reg]);
|
||||
mask |= 1 << clk->bit;
|
||||
out_be32(&clockctl->sccr[clk->reg], mask);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void mpc5121_clk_disable(struct clk *clk)
|
||||
{
|
||||
unsigned int mask;
|
||||
|
||||
if (clk->flags & CLK_HAS_CTRL) {
|
||||
mask = in_be32(&clockctl->sccr[clk->reg]);
|
||||
mask &= ~(1 << clk->bit);
|
||||
out_be32(&clockctl->sccr[clk->reg], mask);
|
||||
}
|
||||
}
|
||||
|
||||
static unsigned long mpc5121_clk_get_rate(struct clk *clk)
|
||||
{
|
||||
if (clk->flags & CLK_HAS_RATE)
|
||||
return clk->rate;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
static long mpc5121_clk_round_rate(struct clk *clk, unsigned long rate)
|
||||
{
|
||||
return rate;
|
||||
}
|
||||
|
||||
static int mpc5121_clk_set_rate(struct clk *clk, unsigned long rate)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int clk_register(struct clk *clk)
|
||||
{
|
||||
mutex_lock(&clocks_mutex);
|
||||
list_add(&clk->node, &clocks);
|
||||
mutex_unlock(&clocks_mutex);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static unsigned long spmf_mult(void)
|
||||
{
|
||||
/*
|
||||
* Convert spmf to multiplier
|
||||
*/
|
||||
static int spmf_to_mult[] = {
|
||||
68, 1, 12, 16,
|
||||
20, 24, 28, 32,
|
||||
36, 40, 44, 48,
|
||||
52, 56, 60, 64
|
||||
};
|
||||
int spmf = (in_be32(&clockctl->spmr) >> 24) & 0xf;
|
||||
return spmf_to_mult[spmf];
|
||||
}
|
||||
|
||||
static unsigned long sysdiv_div_x_2(void)
|
||||
{
|
||||
/*
|
||||
* Convert sysdiv to divisor x 2
|
||||
* Some divisors have fractional parts so
|
||||
* multiply by 2 then divide by this value
|
||||
*/
|
||||
static int sysdiv_to_div_x_2[] = {
|
||||
4, 5, 6, 7,
|
||||
8, 9, 10, 14,
|
||||
12, 16, 18, 22,
|
||||
20, 24, 26, 30,
|
||||
28, 32, 34, 38,
|
||||
36, 40, 42, 46,
|
||||
44, 48, 50, 54,
|
||||
52, 56, 58, 62,
|
||||
60, 64, 66,
|
||||
};
|
||||
int sysdiv = (in_be32(&clockctl->scfr2) >> 26) & 0x3f;
|
||||
return sysdiv_to_div_x_2[sysdiv];
|
||||
}
|
||||
|
||||
static unsigned long ref_to_sys(unsigned long rate)
|
||||
{
|
||||
rate *= spmf_mult();
|
||||
rate *= 2;
|
||||
rate /= sysdiv_div_x_2();
|
||||
|
||||
return rate;
|
||||
}
|
||||
|
||||
static unsigned long sys_to_ref(unsigned long rate)
|
||||
{
|
||||
rate *= sysdiv_div_x_2();
|
||||
rate /= 2;
|
||||
rate /= spmf_mult();
|
||||
|
||||
return rate;
|
||||
}
|
||||
|
||||
static long ips_to_ref(unsigned long rate)
|
||||
{
|
||||
int ips_div = (in_be32(&clockctl->scfr1) >> 23) & 0x7;
|
||||
|
||||
rate *= ips_div; /* csb_clk = ips_clk * ips_div */
|
||||
rate *= 2; /* sys_clk = csb_clk * 2 */
|
||||
return sys_to_ref(rate);
|
||||
}
|
||||
|
||||
static unsigned long devtree_getfreq(char *clockname)
|
||||
{
|
||||
struct device_node *np;
|
||||
const unsigned int *prop;
|
||||
unsigned int val = 0;
|
||||
|
||||
np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-immr");
|
||||
if (np) {
|
||||
prop = of_get_property(np, clockname, NULL);
|
||||
if (prop)
|
||||
val = *prop;
|
||||
of_node_put(np);
|
||||
}
|
||||
return val;
|
||||
}
|
||||
|
||||
static void ref_clk_calc(struct clk *clk)
|
||||
{
|
||||
unsigned long rate;
|
||||
|
||||
rate = devtree_getfreq("bus-frequency");
|
||||
if (rate == 0) {
|
||||
printk(KERN_ERR "No bus-frequency in dev tree\n");
|
||||
clk->rate = 0;
|
||||
return;
|
||||
}
|
||||
clk->rate = ips_to_ref(rate);
|
||||
}
|
||||
|
||||
static struct clk ref_clk = {
|
||||
.name = "ref_clk",
|
||||
.calc = ref_clk_calc,
|
||||
};
|
||||
|
||||
|
||||
static void sys_clk_calc(struct clk *clk)
|
||||
{
|
||||
clk->rate = ref_to_sys(ref_clk.rate);
|
||||
}
|
||||
|
||||
static struct clk sys_clk = {
|
||||
.name = "sys_clk",
|
||||
.calc = sys_clk_calc,
|
||||
};
|
||||
|
||||
static void diu_clk_calc(struct clk *clk)
|
||||
{
|
||||
int diudiv_x_2 = in_be32(&clockctl->scfr1) & 0xff;
|
||||
unsigned long rate;
|
||||
|
||||
rate = sys_clk.rate;
|
||||
|
||||
rate *= 2;
|
||||
rate /= diudiv_x_2;
|
||||
|
||||
clk->rate = rate;
|
||||
}
|
||||
|
||||
static void viu_clk_calc(struct clk *clk)
|
||||
{
|
||||
unsigned long rate;
|
||||
|
||||
rate = sys_clk.rate;
|
||||
rate /= 2;
|
||||
clk->rate = rate;
|
||||
}
|
||||
|
||||
static void half_clk_calc(struct clk *clk)
|
||||
{
|
||||
clk->rate = clk->parent->rate / 2;
|
||||
}
|
||||
|
||||
static void generic_div_clk_calc(struct clk *clk)
|
||||
{
|
||||
int div = (in_be32(&clockctl->scfr1) >> clk->div_shift) & 0x7;
|
||||
|
||||
clk->rate = clk->parent->rate / div;
|
||||
}
|
||||
|
||||
static void unity_clk_calc(struct clk *clk)
|
||||
{
|
||||
clk->rate = clk->parent->rate;
|
||||
}
|
||||
|
||||
static struct clk csb_clk = {
|
||||
.name = "csb_clk",
|
||||
.calc = half_clk_calc,
|
||||
.parent = &sys_clk,
|
||||
};
|
||||
|
||||
static void e300_clk_calc(struct clk *clk)
|
||||
{
|
||||
int spmf = (in_be32(&clockctl->spmr) >> 16) & 0xf;
|
||||
int ratex2 = clk->parent->rate * spmf;
|
||||
|
||||
clk->rate = ratex2 / 2;
|
||||
}
|
||||
|
||||
static struct clk e300_clk = {
|
||||
.name = "e300_clk",
|
||||
.calc = e300_clk_calc,
|
||||
.parent = &csb_clk,
|
||||
};
|
||||
|
||||
static struct clk ips_clk = {
|
||||
.name = "ips_clk",
|
||||
.calc = generic_div_clk_calc,
|
||||
.parent = &csb_clk,
|
||||
.div_shift = 23,
|
||||
};
|
||||
|
||||
/*
|
||||
* Clocks controlled by SCCR1 (.reg = 0)
|
||||
*/
|
||||
static struct clk lpc_clk = {
|
||||
.name = "lpc_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 0,
|
||||
.bit = 30,
|
||||
.calc = generic_div_clk_calc,
|
||||
.parent = &ips_clk,
|
||||
.div_shift = 11,
|
||||
};
|
||||
|
||||
static struct clk nfc_clk = {
|
||||
.name = "nfc_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 0,
|
||||
.bit = 29,
|
||||
.calc = generic_div_clk_calc,
|
||||
.parent = &ips_clk,
|
||||
.div_shift = 8,
|
||||
};
|
||||
|
||||
static struct clk pata_clk = {
|
||||
.name = "pata_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 0,
|
||||
.bit = 28,
|
||||
.calc = unity_clk_calc,
|
||||
.parent = &ips_clk,
|
||||
};
|
||||
|
||||
/*
|
||||
* PSC clocks (bits 27 - 16)
|
||||
* are setup elsewhere
|
||||
*/
|
||||
|
||||
static struct clk sata_clk = {
|
||||
.name = "sata_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 0,
|
||||
.bit = 14,
|
||||
.calc = unity_clk_calc,
|
||||
.parent = &ips_clk,
|
||||
};
|
||||
|
||||
static struct clk fec_clk = {
|
||||
.name = "fec_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 0,
|
||||
.bit = 13,
|
||||
.calc = unity_clk_calc,
|
||||
.parent = &ips_clk,
|
||||
};
|
||||
|
||||
static struct clk pci_clk = {
|
||||
.name = "pci_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 0,
|
||||
.bit = 11,
|
||||
.calc = generic_div_clk_calc,
|
||||
.parent = &csb_clk,
|
||||
.div_shift = 20,
|
||||
};
|
||||
|
||||
/*
|
||||
* Clocks controlled by SCCR2 (.reg = 1)
|
||||
*/
|
||||
static struct clk diu_clk = {
|
||||
.name = "diu_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 1,
|
||||
.bit = 31,
|
||||
.calc = diu_clk_calc,
|
||||
};
|
||||
|
||||
static struct clk viu_clk = {
|
||||
.name = "viu_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 1,
|
||||
.bit = 18,
|
||||
.calc = viu_clk_calc,
|
||||
};
|
||||
|
||||
static struct clk axe_clk = {
|
||||
.name = "axe_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 1,
|
||||
.bit = 30,
|
||||
.calc = unity_clk_calc,
|
||||
.parent = &csb_clk,
|
||||
};
|
||||
|
||||
static struct clk usb1_clk = {
|
||||
.name = "usb1_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 1,
|
||||
.bit = 28,
|
||||
.calc = unity_clk_calc,
|
||||
.parent = &csb_clk,
|
||||
};
|
||||
|
||||
static struct clk usb2_clk = {
|
||||
.name = "usb2_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 1,
|
||||
.bit = 27,
|
||||
.calc = unity_clk_calc,
|
||||
.parent = &csb_clk,
|
||||
};
|
||||
|
||||
static struct clk i2c_clk = {
|
||||
.name = "i2c_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 1,
|
||||
.bit = 26,
|
||||
.calc = unity_clk_calc,
|
||||
.parent = &ips_clk,
|
||||
};
|
||||
|
||||
static struct clk mscan_clk = {
|
||||
.name = "mscan_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 1,
|
||||
.bit = 25,
|
||||
.calc = unity_clk_calc,
|
||||
.parent = &ips_clk,
|
||||
};
|
||||
|
||||
static struct clk sdhc_clk = {
|
||||
.name = "sdhc_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 1,
|
||||
.bit = 24,
|
||||
.calc = unity_clk_calc,
|
||||
.parent = &ips_clk,
|
||||
};
|
||||
|
||||
static struct clk mbx_bus_clk = {
|
||||
.name = "mbx_bus_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 1,
|
||||
.bit = 22,
|
||||
.calc = half_clk_calc,
|
||||
.parent = &csb_clk,
|
||||
};
|
||||
|
||||
static struct clk mbx_clk = {
|
||||
.name = "mbx_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 1,
|
||||
.bit = 21,
|
||||
.calc = unity_clk_calc,
|
||||
.parent = &csb_clk,
|
||||
};
|
||||
|
||||
static struct clk mbx_3d_clk = {
|
||||
.name = "mbx_3d_clk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 1,
|
||||
.bit = 20,
|
||||
.calc = generic_div_clk_calc,
|
||||
.parent = &mbx_bus_clk,
|
||||
.div_shift = 14,
|
||||
};
|
||||
|
||||
static void psc_mclk_in_calc(struct clk *clk)
|
||||
{
|
||||
clk->rate = devtree_getfreq("psc_mclk_in");
|
||||
if (!clk->rate)
|
||||
clk->rate = 25000000;
|
||||
}
|
||||
|
||||
static struct clk psc_mclk_in = {
|
||||
.name = "psc_mclk_in",
|
||||
.calc = psc_mclk_in_calc,
|
||||
};
|
||||
|
||||
static struct clk spdif_txclk = {
|
||||
.name = "spdif_txclk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 1,
|
||||
.bit = 23,
|
||||
};
|
||||
|
||||
static struct clk spdif_rxclk = {
|
||||
.name = "spdif_rxclk",
|
||||
.flags = CLK_HAS_CTRL,
|
||||
.reg = 1,
|
||||
.bit = 23,
|
||||
};
|
||||
|
||||
static void ac97_clk_calc(struct clk *clk)
|
||||
{
|
||||
/* ac97 bit clock is always 24.567 MHz */
|
||||
clk->rate = 24567000;
|
||||
}
|
||||
|
||||
static struct clk ac97_clk = {
|
||||
.name = "ac97_clk_in",
|
||||
.calc = ac97_clk_calc,
|
||||
};
|
||||
|
||||
static struct clk *rate_clks[] = {
|
||||
&ref_clk,
|
||||
&sys_clk,
|
||||
&diu_clk,
|
||||
&viu_clk,
|
||||
&csb_clk,
|
||||
&e300_clk,
|
||||
&ips_clk,
|
||||
&fec_clk,
|
||||
&sata_clk,
|
||||
&pata_clk,
|
||||
&nfc_clk,
|
||||
&lpc_clk,
|
||||
&mbx_bus_clk,
|
||||
&mbx_clk,
|
||||
&mbx_3d_clk,
|
||||
&axe_clk,
|
||||
&usb1_clk,
|
||||
&usb2_clk,
|
||||
&i2c_clk,
|
||||
&mscan_clk,
|
||||
&sdhc_clk,
|
||||
&pci_clk,
|
||||
&psc_mclk_in,
|
||||
&spdif_txclk,
|
||||
&spdif_rxclk,
|
||||
&ac97_clk,
|
||||
NULL
|
||||
};
|
||||
|
||||
static void rate_clk_init(struct clk *clk)
|
||||
{
|
||||
if (clk->calc) {
|
||||
clk->calc(clk);
|
||||
clk->flags |= CLK_HAS_RATE;
|
||||
clk_register(clk);
|
||||
} else {
|
||||
printk(KERN_WARNING
|
||||
"Could not initialize clk %s without a calc routine\n",
|
||||
clk->name);
|
||||
}
|
||||
}
|
||||
|
||||
static void rate_clks_init(void)
|
||||
{
|
||||
struct clk **cpp, *clk;
|
||||
|
||||
cpp = rate_clks;
|
||||
while ((clk = *cpp++))
|
||||
rate_clk_init(clk);
|
||||
}
|
||||
|
||||
/*
|
||||
* There are two clk enable registers with 32 enable bits each
|
||||
* psc clocks and device clocks are all stored in dev_clks
|
||||
*/
|
||||
static struct clk dev_clks[2][32];
|
||||
|
||||
/*
|
||||
* Given a psc number return the dev_clk
|
||||
* associated with it
|
||||
*/
|
||||
static struct clk *psc_dev_clk(int pscnum)
|
||||
{
|
||||
int reg, bit;
|
||||
struct clk *clk;
|
||||
|
||||
reg = 0;
|
||||
bit = 27 - pscnum;
|
||||
|
||||
clk = &dev_clks[reg][bit];
|
||||
clk->reg = 0;
|
||||
clk->bit = bit;
|
||||
return clk;
|
||||
}
|
||||
|
||||
/*
|
||||
* PSC clock rate calculation
|
||||
*/
|
||||
static void psc_calc_rate(struct clk *clk, int pscnum, struct device_node *np)
|
||||
{
|
||||
unsigned long mclk_src = sys_clk.rate;
|
||||
unsigned long mclk_div;
|
||||
|
||||
/*
|
||||
* Can only change value of mclk divider
|
||||
* when the divider is disabled.
|
||||
*
|
||||
* Zero is not a valid divider so minimum
|
||||
* divider is 1
|
||||
*
|
||||
* disable/set divider/enable
|
||||
*/
|
||||
out_be32(&clockctl->pccr[pscnum], 0);
|
||||
out_be32(&clockctl->pccr[pscnum], 0x00020000);
|
||||
out_be32(&clockctl->pccr[pscnum], 0x00030000);
|
||||
|
||||
if (in_be32(&clockctl->pccr[pscnum]) & 0x80) {
|
||||
clk->rate = spdif_rxclk.rate;
|
||||
return;
|
||||
}
|
||||
|
||||
switch ((in_be32(&clockctl->pccr[pscnum]) >> 14) & 0x3) {
|
||||
case 0:
|
||||
mclk_src = sys_clk.rate;
|
||||
break;
|
||||
case 1:
|
||||
mclk_src = ref_clk.rate;
|
||||
break;
|
||||
case 2:
|
||||
mclk_src = psc_mclk_in.rate;
|
||||
break;
|
||||
case 3:
|
||||
mclk_src = spdif_txclk.rate;
|
||||
break;
|
||||
}
|
||||
|
||||
mclk_div = ((in_be32(&clockctl->pccr[pscnum]) >> 17) & 0x7fff) + 1;
|
||||
clk->rate = mclk_src / mclk_div;
|
||||
}
|
||||
|
||||
/*
|
||||
* Find all psc nodes in device tree and assign a clock
|
||||
* with name "psc%d_mclk" and dev pointing at the device
|
||||
* returned from of_find_device_by_node
|
||||
*/
|
||||
static void psc_clks_init(void)
|
||||
{
|
||||
struct device_node *np;
|
||||
struct platform_device *ofdev;
|
||||
u32 reg;
|
||||
const char *psc_compat;
|
||||
|
||||
psc_compat = mpc512x_select_psc_compat();
|
||||
if (!psc_compat)
|
||||
return;
|
||||
|
||||
for_each_compatible_node(np, NULL, psc_compat) {
|
||||
if (!of_property_read_u32(np, "reg", ®)) {
|
||||
int pscnum = (reg & 0xf00) >> 8;
|
||||
struct clk *clk = psc_dev_clk(pscnum);
|
||||
|
||||
clk->flags = CLK_HAS_RATE | CLK_HAS_CTRL;
|
||||
ofdev = of_find_device_by_node(np);
|
||||
clk->dev = &ofdev->dev;
|
||||
/*
|
||||
* AC97 is special rate clock does
|
||||
* not go through normal path
|
||||
*/
|
||||
if (of_device_is_compatible(np, "fsl,mpc5121-psc-ac97"))
|
||||
clk->rate = ac97_clk.rate;
|
||||
else
|
||||
psc_calc_rate(clk, pscnum, np);
|
||||
sprintf(clk->name, "psc%d_mclk", pscnum);
|
||||
clk_register(clk);
|
||||
clk_enable(clk);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static struct clk_interface mpc5121_clk_functions = {
|
||||
.clk_get = mpc5121_clk_get,
|
||||
.clk_enable = mpc5121_clk_enable,
|
||||
.clk_disable = mpc5121_clk_disable,
|
||||
.clk_get_rate = mpc5121_clk_get_rate,
|
||||
.clk_put = mpc5121_clk_put,
|
||||
.clk_round_rate = mpc5121_clk_round_rate,
|
||||
.clk_set_rate = mpc5121_clk_set_rate,
|
||||
.clk_set_parent = NULL,
|
||||
.clk_get_parent = NULL,
|
||||
};
|
||||
|
||||
int __init mpc5121_clk_init(void)
|
||||
{
|
||||
struct device_node *np;
|
||||
|
||||
np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-clock");
|
||||
if (np) {
|
||||
clockctl = of_iomap(np, 0);
|
||||
of_node_put(np);
|
||||
}
|
||||
|
||||
if (!clockctl) {
|
||||
printk(KERN_ERR "Could not map clock control registers\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
rate_clks_init();
|
||||
psc_clks_init();
|
||||
|
||||
/* leave clockctl mapped forever */
|
||||
/*iounmap(clockctl); */
|
||||
DEBUG_CLK_DUMP();
|
||||
clocks_initialized++;
|
||||
clk_functions = mpc5121_clk_functions;
|
||||
return 0;
|
||||
}
|
@ -12,6 +12,7 @@
|
||||
* (at your option) any later version.
|
||||
*/
|
||||
|
||||
#include <linux/clk.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/irq.h>
|
||||
@ -68,98 +69,112 @@ struct fsl_diu_shared_fb {
|
||||
bool in_use;
|
||||
};
|
||||
|
||||
#define DIU_DIV_MASK 0x000000ff
|
||||
/* receives a pixel clock spec in pico seconds, adjusts the DIU clock rate */
|
||||
static void mpc512x_set_pixel_clock(unsigned int pixclock)
|
||||
{
|
||||
unsigned long bestval, bestfreq, speed, busfreq;
|
||||
unsigned long minpixclock, maxpixclock, pixval;
|
||||
struct mpc512x_ccm __iomem *ccm;
|
||||
struct device_node *np;
|
||||
u32 temp;
|
||||
long err;
|
||||
int i;
|
||||
struct clk *clk_diu;
|
||||
unsigned long epsilon, minpixclock, maxpixclock;
|
||||
unsigned long offset, want, got, delta;
|
||||
|
||||
np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-clock");
|
||||
/* lookup and enable the DIU clock */
|
||||
np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-diu");
|
||||
if (!np) {
|
||||
pr_err("Can't find clock control module.\n");
|
||||
pr_err("Could not find DIU device tree node.\n");
|
||||
return;
|
||||
}
|
||||
|
||||
ccm = of_iomap(np, 0);
|
||||
clk_diu = of_clk_get(np, 0);
|
||||
if (IS_ERR(clk_diu)) {
|
||||
/* backwards compat with device trees that lack clock specs */
|
||||
clk_diu = clk_get_sys(np->name, "ipg");
|
||||
}
|
||||
of_node_put(np);
|
||||
if (!ccm) {
|
||||
pr_err("Can't map clock control module reg.\n");
|
||||
if (IS_ERR(clk_diu)) {
|
||||
pr_err("Could not lookup DIU clock.\n");
|
||||
return;
|
||||
}
|
||||
if (clk_prepare_enable(clk_diu)) {
|
||||
pr_err("Could not enable DIU clock.\n");
|
||||
return;
|
||||
}
|
||||
|
||||
np = of_find_node_by_type(NULL, "cpu");
|
||||
if (np) {
|
||||
const unsigned int *prop =
|
||||
of_get_property(np, "bus-frequency", NULL);
|
||||
/*
|
||||
* convert the picoseconds spec into the desired clock rate,
|
||||
* determine the acceptable clock range for the monitor (+/- 5%),
|
||||
* do the calculation in steps to avoid integer overflow
|
||||
*/
|
||||
pr_debug("DIU pixclock in ps - %u\n", pixclock);
|
||||
pixclock = (1000000000 / pixclock) * 1000;
|
||||
pr_debug("DIU pixclock freq - %u\n", pixclock);
|
||||
epsilon = pixclock / 20; /* pixclock * 0.05 */
|
||||
pr_debug("DIU deviation - %lu\n", epsilon);
|
||||
minpixclock = pixclock - epsilon;
|
||||
maxpixclock = pixclock + epsilon;
|
||||
pr_debug("DIU minpixclock - %lu\n", minpixclock);
|
||||
pr_debug("DIU maxpixclock - %lu\n", maxpixclock);
|
||||
|
||||
of_node_put(np);
|
||||
if (prop) {
|
||||
busfreq = *prop;
|
||||
} else {
|
||||
pr_err("Can't get bus-frequency property\n");
|
||||
return;
|
||||
}
|
||||
} else {
|
||||
pr_err("Can't find 'cpu' node.\n");
|
||||
/*
|
||||
* check whether the DIU supports the desired pixel clock
|
||||
*
|
||||
* - simply request the desired clock and see what the
|
||||
* platform's clock driver will make of it, assuming that it
|
||||
* will setup the best approximation of the requested value
|
||||
* - try other candidate frequencies in the order of decreasing
|
||||
* preference (i.e. with increasing distance from the desired
|
||||
* pixel clock, and checking the lower frequency before the
|
||||
* higher frequency to not overload the hardware) until the
|
||||
* first match is found -- any potential subsequent match
|
||||
* would only be as good as the former match or typically
|
||||
* would be less preferrable
|
||||
*
|
||||
* the offset increment of pixelclock divided by 64 is an
|
||||
* arbitrary choice -- it's simple to calculate, in the typical
|
||||
* case we expect the first check to succeed already, in the
|
||||
* worst case seven frequencies get tested (the exact center and
|
||||
* three more values each to the left and to the right) before
|
||||
* the 5% tolerance window is exceeded, resulting in fast enough
|
||||
* execution yet high enough probability of finding a suitable
|
||||
* value, while the error rate will be in the order of single
|
||||
* percents
|
||||
*/
|
||||
for (offset = 0; offset <= epsilon; offset += pixclock / 64) {
|
||||
want = pixclock - offset;
|
||||
pr_debug("DIU checking clock - %lu\n", want);
|
||||
clk_set_rate(clk_diu, want);
|
||||
got = clk_get_rate(clk_diu);
|
||||
delta = abs(pixclock - got);
|
||||
if (delta < epsilon)
|
||||
break;
|
||||
if (!offset)
|
||||
continue;
|
||||
want = pixclock + offset;
|
||||
pr_debug("DIU checking clock - %lu\n", want);
|
||||
clk_set_rate(clk_diu, want);
|
||||
got = clk_get_rate(clk_diu);
|
||||
delta = abs(pixclock - got);
|
||||
if (delta < epsilon)
|
||||
break;
|
||||
}
|
||||
if (offset <= epsilon) {
|
||||
pr_debug("DIU clock accepted - %lu\n", want);
|
||||
pr_debug("DIU pixclock want %u, got %lu, delta %lu, eps %lu\n",
|
||||
pixclock, got, delta, epsilon);
|
||||
return;
|
||||
}
|
||||
pr_warn("DIU pixclock auto search unsuccessful\n");
|
||||
|
||||
/* Pixel Clock configuration */
|
||||
pr_debug("DIU: Bus Frequency = %lu\n", busfreq);
|
||||
speed = busfreq * 4; /* DIU_DIV ratio is 4 * CSB_CLK / DIU_CLK */
|
||||
|
||||
/* Calculate the pixel clock with the smallest error */
|
||||
/* calculate the following in steps to avoid overflow */
|
||||
pr_debug("DIU pixclock in ps - %d\n", pixclock);
|
||||
temp = (1000000000 / pixclock) * 1000;
|
||||
pixclock = temp;
|
||||
pr_debug("DIU pixclock freq - %u\n", pixclock);
|
||||
|
||||
temp = temp / 20; /* pixclock * 0.05 */
|
||||
pr_debug("deviation = %d\n", temp);
|
||||
minpixclock = pixclock - temp;
|
||||
maxpixclock = pixclock + temp;
|
||||
pr_debug("DIU minpixclock - %lu\n", minpixclock);
|
||||
pr_debug("DIU maxpixclock - %lu\n", maxpixclock);
|
||||
pixval = speed/pixclock;
|
||||
pr_debug("DIU pixval = %lu\n", pixval);
|
||||
|
||||
err = LONG_MAX;
|
||||
bestval = pixval;
|
||||
pr_debug("DIU bestval = %lu\n", bestval);
|
||||
|
||||
bestfreq = 0;
|
||||
for (i = -1; i <= 1; i++) {
|
||||
temp = speed / (pixval+i);
|
||||
pr_debug("DIU test pixval i=%d, pixval=%lu, temp freq. = %u\n",
|
||||
i, pixval, temp);
|
||||
if ((temp < minpixclock) || (temp > maxpixclock))
|
||||
pr_debug("DIU exceeds monitor range (%lu to %lu)\n",
|
||||
minpixclock, maxpixclock);
|
||||
else if (abs(temp - pixclock) < err) {
|
||||
pr_debug("Entered the else if block %d\n", i);
|
||||
err = abs(temp - pixclock);
|
||||
bestval = pixval + i;
|
||||
bestfreq = temp;
|
||||
}
|
||||
}
|
||||
|
||||
pr_debug("DIU chose = %lx\n", bestval);
|
||||
pr_debug("DIU error = %ld\n NomPixClk ", err);
|
||||
pr_debug("DIU: Best Freq = %lx\n", bestfreq);
|
||||
/* Modify DIU_DIV in CCM SCFR1 */
|
||||
temp = in_be32(&ccm->scfr1);
|
||||
pr_debug("DIU: Current value of SCFR1: 0x%08x\n", temp);
|
||||
temp &= ~DIU_DIV_MASK;
|
||||
temp |= (bestval & DIU_DIV_MASK);
|
||||
out_be32(&ccm->scfr1, temp);
|
||||
pr_debug("DIU: Modified value of SCFR1: 0x%08x\n", temp);
|
||||
iounmap(ccm);
|
||||
/*
|
||||
* what is the most appropriate action to take when the search
|
||||
* for an available pixel clock which is acceptable to the
|
||||
* monitor has failed? disable the DIU (clock) or just provide
|
||||
* a "best effort"? we go with the latter
|
||||
*/
|
||||
pr_warn("DIU pixclock best effort fallback (backend's choice)\n");
|
||||
clk_set_rate(clk_diu, pixclock);
|
||||
got = clk_get_rate(clk_diu);
|
||||
delta = abs(pixclock - got);
|
||||
pr_debug("DIU pixclock want %u, got %lu, delta %lu, eps %lu\n",
|
||||
pixclock, got, delta, epsilon);
|
||||
}
|
||||
|
||||
static enum fsl_diu_monitor_port
|
||||
|
@ -1,7 +1,7 @@
|
||||
config PPC_MPC52xx
|
||||
bool "52xx-based boards"
|
||||
depends on 6xx
|
||||
select PPC_CLOCK
|
||||
select COMMON_CLK
|
||||
select PPC_PCI_CHOICE
|
||||
|
||||
config PPC_MPC5200_SIMPLE
|
||||
|
@ -26,6 +26,7 @@
|
||||
#include <linux/of_fdt.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/bug.h>
|
||||
#include <linux/cpuidle.h>
|
||||
|
||||
#include <asm/machdep.h>
|
||||
#include <asm/firmware.h>
|
||||
@ -216,6 +217,16 @@ static int __init pnv_probe(void)
|
||||
return 1;
|
||||
}
|
||||
|
||||
void powernv_idle(void)
|
||||
{
|
||||
/* Hook to cpuidle framework if available, else
|
||||
* call on default platform idle code
|
||||
*/
|
||||
if (cpuidle_idle_call()) {
|
||||
power7_idle();
|
||||
}
|
||||
}
|
||||
|
||||
define_machine(powernv) {
|
||||
.name = "PowerNV",
|
||||
.probe = pnv_probe,
|
||||
@ -225,7 +236,7 @@ define_machine(powernv) {
|
||||
.show_cpuinfo = pnv_show_cpuinfo,
|
||||
.progress = pnv_progress,
|
||||
.machine_shutdown = pnv_shutdown,
|
||||
.power_save = power7_idle,
|
||||
.power_save = powernv_idle,
|
||||
.calibrate_decr = generic_calibrate_decr,
|
||||
#ifdef CONFIG_KEXEC
|
||||
.kexec_cpu_down = pnv_kexec_cpu_down,
|
||||
|
@ -119,12 +119,3 @@ config DTL
|
||||
which are accessible through a debugfs file.
|
||||
|
||||
Say N if you are unsure.
|
||||
|
||||
config PSERIES_IDLE
|
||||
bool "Cpuidle driver for pSeries platforms"
|
||||
depends on CPU_IDLE
|
||||
depends on PPC_PSERIES
|
||||
default y
|
||||
help
|
||||
Select this option to enable processor idle state management
|
||||
through cpuidle subsystem.
|
||||
|
@ -21,7 +21,6 @@ obj-$(CONFIG_HCALL_STATS) += hvCall_inst.o
|
||||
obj-$(CONFIG_CMM) += cmm.o
|
||||
obj-$(CONFIG_DTL) += dtl.o
|
||||
obj-$(CONFIG_IO_EVENT_IRQ) += io_event_irq.o
|
||||
obj-$(CONFIG_PSERIES_IDLE) += processor_idle.o
|
||||
obj-$(CONFIG_LPARCFG) += lparcfg.o
|
||||
|
||||
ifeq ($(CONFIG_PPC_PSERIES),y)
|
||||
|
@ -292,6 +292,7 @@ static void iommu_table_dart_setup(void)
|
||||
iommu_table_dart.it_offset = 0;
|
||||
/* it_size is in number of entries */
|
||||
iommu_table_dart.it_size = dart_tablesize / sizeof(u32);
|
||||
iommu_table_dart.it_page_shift = IOMMU_PAGE_SHIFT_4K;
|
||||
|
||||
/* Initialize the common IOMMU code */
|
||||
iommu_table_dart.it_base = (unsigned long)dart_vbase;
|
||||
|
@ -35,6 +35,11 @@ depends on ARM
|
||||
source "drivers/cpuidle/Kconfig.arm"
|
||||
endmenu
|
||||
|
||||
menu "POWERPC CPU Idle Drivers"
|
||||
depends on PPC
|
||||
source "drivers/cpuidle/Kconfig.powerpc"
|
||||
endmenu
|
||||
|
||||
endif
|
||||
|
||||
config ARCH_NEEDS_CPU_IDLE_COUPLED
|
||||
|
20
drivers/cpuidle/Kconfig.powerpc
Normal file
20
drivers/cpuidle/Kconfig.powerpc
Normal file
@ -0,0 +1,20 @@
|
||||
#
|
||||
# POWERPC CPU Idle Drivers
|
||||
#
|
||||
config PSERIES_CPUIDLE
|
||||
bool "Cpuidle driver for pSeries platforms"
|
||||
depends on CPU_IDLE
|
||||
depends on PPC_PSERIES
|
||||
default y
|
||||
help
|
||||
Select this option to enable processor idle state management
|
||||
through cpuidle subsystem.
|
||||
|
||||
config POWERNV_CPUIDLE
|
||||
bool "Cpuidle driver for powernv platforms"
|
||||
depends on CPU_IDLE
|
||||
depends on PPC_POWERNV
|
||||
default y
|
||||
help
|
||||
Select this option to enable processor idle state management
|
||||
through cpuidle subsystem.
|
@ -13,3 +13,8 @@ obj-$(CONFIG_ARM_KIRKWOOD_CPUIDLE) += cpuidle-kirkwood.o
|
||||
obj-$(CONFIG_ARM_ZYNQ_CPUIDLE) += cpuidle-zynq.o
|
||||
obj-$(CONFIG_ARM_U8500_CPUIDLE) += cpuidle-ux500.o
|
||||
obj-$(CONFIG_ARM_AT91_CPUIDLE) += cpuidle-at91.o
|
||||
|
||||
###############################################################################
|
||||
# POWERPC drivers
|
||||
obj-$(CONFIG_PSERIES_CPUIDLE) += cpuidle-pseries.o
|
||||
obj-$(CONFIG_POWERNV_CPUIDLE) += cpuidle-powernv.o
|
||||
|
169
drivers/cpuidle/cpuidle-powernv.c
Normal file
169
drivers/cpuidle/cpuidle-powernv.c
Normal file
@ -0,0 +1,169 @@
|
||||
/*
|
||||
* cpuidle-powernv - idle state cpuidle driver.
|
||||
* Adapted from drivers/cpuidle/cpuidle-pseries
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/moduleparam.h>
|
||||
#include <linux/cpuidle.h>
|
||||
#include <linux/cpu.h>
|
||||
#include <linux/notifier.h>
|
||||
|
||||
#include <asm/machdep.h>
|
||||
#include <asm/firmware.h>
|
||||
|
||||
struct cpuidle_driver powernv_idle_driver = {
|
||||
.name = "powernv_idle",
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static int max_idle_state;
|
||||
static struct cpuidle_state *cpuidle_state_table;
|
||||
|
||||
static int snooze_loop(struct cpuidle_device *dev,
|
||||
struct cpuidle_driver *drv,
|
||||
int index)
|
||||
{
|
||||
local_irq_enable();
|
||||
set_thread_flag(TIF_POLLING_NRFLAG);
|
||||
|
||||
while (!need_resched()) {
|
||||
HMT_low();
|
||||
HMT_very_low();
|
||||
}
|
||||
|
||||
HMT_medium();
|
||||
clear_thread_flag(TIF_POLLING_NRFLAG);
|
||||
smp_mb();
|
||||
return index;
|
||||
}
|
||||
|
||||
static int nap_loop(struct cpuidle_device *dev,
|
||||
struct cpuidle_driver *drv,
|
||||
int index)
|
||||
{
|
||||
power7_idle();
|
||||
return index;
|
||||
}
|
||||
|
||||
/*
|
||||
* States for dedicated partition case.
|
||||
*/
|
||||
static struct cpuidle_state powernv_states[] = {
|
||||
{ /* Snooze */
|
||||
.name = "snooze",
|
||||
.desc = "snooze",
|
||||
.flags = CPUIDLE_FLAG_TIME_VALID,
|
||||
.exit_latency = 0,
|
||||
.target_residency = 0,
|
||||
.enter = &snooze_loop },
|
||||
{ /* NAP */
|
||||
.name = "NAP",
|
||||
.desc = "NAP",
|
||||
.flags = CPUIDLE_FLAG_TIME_VALID,
|
||||
.exit_latency = 10,
|
||||
.target_residency = 100,
|
||||
.enter = &nap_loop },
|
||||
};
|
||||
|
||||
static int powernv_cpuidle_add_cpu_notifier(struct notifier_block *n,
|
||||
unsigned long action, void *hcpu)
|
||||
{
|
||||
int hotcpu = (unsigned long)hcpu;
|
||||
struct cpuidle_device *dev =
|
||||
per_cpu(cpuidle_devices, hotcpu);
|
||||
|
||||
if (dev && cpuidle_get_driver()) {
|
||||
switch (action) {
|
||||
case CPU_ONLINE:
|
||||
case CPU_ONLINE_FROZEN:
|
||||
cpuidle_pause_and_lock();
|
||||
cpuidle_enable_device(dev);
|
||||
cpuidle_resume_and_unlock();
|
||||
break;
|
||||
|
||||
case CPU_DEAD:
|
||||
case CPU_DEAD_FROZEN:
|
||||
cpuidle_pause_and_lock();
|
||||
cpuidle_disable_device(dev);
|
||||
cpuidle_resume_and_unlock();
|
||||
break;
|
||||
|
||||
default:
|
||||
return NOTIFY_DONE;
|
||||
}
|
||||
}
|
||||
return NOTIFY_OK;
|
||||
}
|
||||
|
||||
static struct notifier_block setup_hotplug_notifier = {
|
||||
.notifier_call = powernv_cpuidle_add_cpu_notifier,
|
||||
};
|
||||
|
||||
/*
|
||||
* powernv_cpuidle_driver_init()
|
||||
*/
|
||||
static int powernv_cpuidle_driver_init(void)
|
||||
{
|
||||
int idle_state;
|
||||
struct cpuidle_driver *drv = &powernv_idle_driver;
|
||||
|
||||
drv->state_count = 0;
|
||||
|
||||
for (idle_state = 0; idle_state < max_idle_state; ++idle_state) {
|
||||
/* Is the state not enabled? */
|
||||
if (cpuidle_state_table[idle_state].enter == NULL)
|
||||
continue;
|
||||
|
||||
drv->states[drv->state_count] = /* structure copy */
|
||||
cpuidle_state_table[idle_state];
|
||||
|
||||
drv->state_count += 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* powernv_idle_probe()
|
||||
* Choose state table for shared versus dedicated partition
|
||||
*/
|
||||
static int powernv_idle_probe(void)
|
||||
{
|
||||
|
||||
if (cpuidle_disable != IDLE_NO_OVERRIDE)
|
||||
return -ENODEV;
|
||||
|
||||
if (firmware_has_feature(FW_FEATURE_OPALv3)) {
|
||||
cpuidle_state_table = powernv_states;
|
||||
max_idle_state = ARRAY_SIZE(powernv_states);
|
||||
} else
|
||||
return -ENODEV;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __init powernv_processor_idle_init(void)
|
||||
{
|
||||
int retval;
|
||||
|
||||
retval = powernv_idle_probe();
|
||||
if (retval)
|
||||
return retval;
|
||||
|
||||
powernv_cpuidle_driver_init();
|
||||
retval = cpuidle_register(&powernv_idle_driver, NULL);
|
||||
if (retval) {
|
||||
printk(KERN_DEBUG "Registration of powernv driver failed.\n");
|
||||
return retval;
|
||||
}
|
||||
|
||||
register_cpu_notifier(&setup_hotplug_notifier);
|
||||
printk(KERN_DEBUG "powernv_idle_driver registered\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
device_initcall(powernv_processor_idle_init);
|
@ -1,5 +1,5 @@
|
||||
/*
|
||||
* processor_idle - idle state cpuidle driver.
|
||||
* cpuidle-pseries - idle state cpuidle driver.
|
||||
* Adapted from drivers/idle/intel_idle.c and
|
||||
* drivers/acpi/processor_idle.c
|
||||
*
|
||||
@ -24,9 +24,7 @@ struct cpuidle_driver pseries_idle_driver = {
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
#define MAX_IDLE_STATE_COUNT 2
|
||||
|
||||
static int max_idle_state = MAX_IDLE_STATE_COUNT - 1;
|
||||
static int max_idle_state;
|
||||
static struct cpuidle_state *cpuidle_state_table;
|
||||
|
||||
static inline void idle_loop_prolog(unsigned long *in_purr)
|
||||
@ -54,13 +52,12 @@ static int snooze_loop(struct cpuidle_device *dev,
|
||||
int index)
|
||||
{
|
||||
unsigned long in_purr;
|
||||
int cpu = dev->cpu;
|
||||
|
||||
idle_loop_prolog(&in_purr);
|
||||
local_irq_enable();
|
||||
set_thread_flag(TIF_POLLING_NRFLAG);
|
||||
|
||||
while ((!need_resched()) && cpu_online(cpu)) {
|
||||
while (!need_resched()) {
|
||||
HMT_low();
|
||||
HMT_very_low();
|
||||
}
|
||||
@ -135,7 +132,7 @@ static int shared_cede_loop(struct cpuidle_device *dev,
|
||||
/*
|
||||
* States for dedicated partition case.
|
||||
*/
|
||||
static struct cpuidle_state dedicated_states[MAX_IDLE_STATE_COUNT] = {
|
||||
static struct cpuidle_state dedicated_states[] = {
|
||||
{ /* Snooze */
|
||||
.name = "snooze",
|
||||
.desc = "snooze",
|
||||
@ -155,7 +152,7 @@ static struct cpuidle_state dedicated_states[MAX_IDLE_STATE_COUNT] = {
|
||||
/*
|
||||
* States for shared partition case.
|
||||
*/
|
||||
static struct cpuidle_state shared_states[MAX_IDLE_STATE_COUNT] = {
|
||||
static struct cpuidle_state shared_states[] = {
|
||||
{ /* Shared Cede */
|
||||
.name = "Shared Cede",
|
||||
.desc = "Shared Cede",
|
||||
@ -165,29 +162,12 @@ static struct cpuidle_state shared_states[MAX_IDLE_STATE_COUNT] = {
|
||||
.enter = &shared_cede_loop },
|
||||
};
|
||||
|
||||
void update_smt_snooze_delay(int cpu, int residency)
|
||||
{
|
||||
struct cpuidle_driver *drv = cpuidle_get_driver();
|
||||
struct cpuidle_device *dev = per_cpu(cpuidle_devices, cpu);
|
||||
|
||||
if (cpuidle_state_table != dedicated_states)
|
||||
return;
|
||||
|
||||
if (residency < 0) {
|
||||
/* Disable the Nap state on that cpu */
|
||||
if (dev)
|
||||
dev->states_usage[1].disable = 1;
|
||||
} else
|
||||
if (drv)
|
||||
drv->states[1].target_residency = residency;
|
||||
}
|
||||
|
||||
static int pseries_cpuidle_add_cpu_notifier(struct notifier_block *n,
|
||||
unsigned long action, void *hcpu)
|
||||
{
|
||||
int hotcpu = (unsigned long)hcpu;
|
||||
struct cpuidle_device *dev =
|
||||
per_cpu_ptr(cpuidle_devices, hotcpu);
|
||||
per_cpu(cpuidle_devices, hotcpu);
|
||||
|
||||
if (dev && cpuidle_get_driver()) {
|
||||
switch (action) {
|
||||
@ -226,12 +206,8 @@ static int pseries_cpuidle_driver_init(void)
|
||||
|
||||
drv->state_count = 0;
|
||||
|
||||
for (idle_state = 0; idle_state < MAX_IDLE_STATE_COUNT; ++idle_state) {
|
||||
|
||||
if (idle_state > max_idle_state)
|
||||
break;
|
||||
|
||||
/* is the state not enabled? */
|
||||
for (idle_state = 0; idle_state < max_idle_state; ++idle_state) {
|
||||
/* Is the state not enabled? */
|
||||
if (cpuidle_state_table[idle_state].enter == NULL)
|
||||
continue;
|
||||
|
||||
@ -251,21 +227,19 @@ static int pseries_cpuidle_driver_init(void)
|
||||
static int pseries_idle_probe(void)
|
||||
{
|
||||
|
||||
if (!firmware_has_feature(FW_FEATURE_SPLPAR))
|
||||
return -ENODEV;
|
||||
|
||||
if (cpuidle_disable != IDLE_NO_OVERRIDE)
|
||||
return -ENODEV;
|
||||
|
||||
if (max_idle_state == 0) {
|
||||
printk(KERN_DEBUG "pseries processor idle disabled.\n");
|
||||
return -EPERM;
|
||||
}
|
||||
|
||||
if (lppaca_shared_proc(get_lppaca()))
|
||||
cpuidle_state_table = shared_states;
|
||||
else
|
||||
cpuidle_state_table = dedicated_states;
|
||||
if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
|
||||
if (lppaca_shared_proc(get_lppaca())) {
|
||||
cpuidle_state_table = shared_states;
|
||||
max_idle_state = ARRAY_SIZE(shared_states);
|
||||
} else {
|
||||
cpuidle_state_table = dedicated_states;
|
||||
max_idle_state = ARRAY_SIZE(dedicated_states);
|
||||
}
|
||||
} else
|
||||
return -ENODEV;
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -287,22 +261,7 @@ static int __init pseries_processor_idle_init(void)
|
||||
|
||||
register_cpu_notifier(&setup_hotplug_notifier);
|
||||
printk(KERN_DEBUG "pseries_idle_driver registered\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __exit pseries_processor_idle_exit(void)
|
||||
{
|
||||
|
||||
unregister_cpu_notifier(&setup_hotplug_notifier);
|
||||
cpuidle_unregister(&pseries_idle_driver);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
module_init(pseries_processor_idle_init);
|
||||
module_exit(pseries_processor_idle_exit);
|
||||
|
||||
MODULE_AUTHOR("Deepthi Dharwar <deepthi@linux.vnet.ibm.com>");
|
||||
MODULE_DESCRIPTION("Cpuidle driver for POWER");
|
||||
MODULE_LICENSE("GPL");
|
||||
device_initcall(pseries_processor_idle_init);
|
@ -1580,7 +1580,7 @@ static int viu_of_probe(struct platform_device *op)
|
||||
}
|
||||
|
||||
/* enable VIU clock */
|
||||
clk = devm_clk_get(&op->dev, "viu_clk");
|
||||
clk = devm_clk_get(&op->dev, "ipg");
|
||||
if (IS_ERR(clk)) {
|
||||
dev_err(&op->dev, "failed to lookup the clock!\n");
|
||||
ret = PTR_ERR(clk);
|
||||
|
@ -729,7 +729,7 @@ static int mpc5121_nfc_probe(struct platform_device *op)
|
||||
of_node_put(rootnode);
|
||||
|
||||
/* Enable NFC clock */
|
||||
clk = devm_clk_get(dev, "nfc_clk");
|
||||
clk = devm_clk_get(dev, "ipg");
|
||||
if (IS_ERR(clk)) {
|
||||
dev_err(dev, "Unable to acquire NFC clock!\n");
|
||||
retval = PTR_ERR(clk);
|
||||
|
@ -108,135 +108,170 @@ static u32 mpc52xx_can_get_clock(struct platform_device *ofdev,
|
||||
#endif /* CONFIG_PPC_MPC52xx */
|
||||
|
||||
#ifdef CONFIG_PPC_MPC512x
|
||||
struct mpc512x_clockctl {
|
||||
u32 spmr; /* System PLL Mode Reg */
|
||||
u32 sccr[2]; /* System Clk Ctrl Reg 1 & 2 */
|
||||
u32 scfr1; /* System Clk Freq Reg 1 */
|
||||
u32 scfr2; /* System Clk Freq Reg 2 */
|
||||
u32 reserved;
|
||||
u32 bcr; /* Bread Crumb Reg */
|
||||
u32 pccr[12]; /* PSC Clk Ctrl Reg 0-11 */
|
||||
u32 spccr; /* SPDIF Clk Ctrl Reg */
|
||||
u32 cccr; /* CFM Clk Ctrl Reg */
|
||||
u32 dccr; /* DIU Clk Cnfg Reg */
|
||||
u32 mccr[4]; /* MSCAN Clk Ctrl Reg 1-3 */
|
||||
};
|
||||
|
||||
static struct of_device_id mpc512x_clock_ids[] = {
|
||||
{ .compatible = "fsl,mpc5121-clock", },
|
||||
{}
|
||||
};
|
||||
|
||||
static u32 mpc512x_can_get_clock(struct platform_device *ofdev,
|
||||
const char *clock_name, int *mscan_clksrc)
|
||||
const char *clock_source, int *mscan_clksrc)
|
||||
{
|
||||
struct mpc512x_clockctl __iomem *clockctl;
|
||||
struct device_node *np_clock;
|
||||
struct clk *sys_clk, *ref_clk;
|
||||
int plen, clockidx, clocksrc = -1;
|
||||
u32 sys_freq, val, clockdiv = 1, freq = 0;
|
||||
const u32 *pval;
|
||||
struct device_node *np;
|
||||
u32 clockdiv;
|
||||
enum {
|
||||
CLK_FROM_AUTO,
|
||||
CLK_FROM_IPS,
|
||||
CLK_FROM_SYS,
|
||||
CLK_FROM_REF,
|
||||
} clk_from;
|
||||
struct clk *clk_in, *clk_can;
|
||||
unsigned long freq_calc;
|
||||
struct mscan_priv *priv;
|
||||
struct clk *clk_ipg;
|
||||
|
||||
np_clock = of_find_matching_node(NULL, mpc512x_clock_ids);
|
||||
if (!np_clock) {
|
||||
dev_err(&ofdev->dev, "couldn't find clock node\n");
|
||||
return 0;
|
||||
/* the caller passed in the clock source spec that was read from
|
||||
* the device tree, get the optional clock divider as well
|
||||
*/
|
||||
np = ofdev->dev.of_node;
|
||||
clockdiv = 1;
|
||||
of_property_read_u32(np, "fsl,mscan-clock-divider", &clockdiv);
|
||||
dev_dbg(&ofdev->dev, "device tree specs: clk src[%s] div[%d]\n",
|
||||
clock_source ? clock_source : "<NULL>", clockdiv);
|
||||
|
||||
/* when clock-source is 'ip', the CANCTL1[CLKSRC] bit needs to
|
||||
* get set, and the 'ips' clock is the input to the MSCAN
|
||||
* component
|
||||
*
|
||||
* for clock-source values of 'ref' or 'sys' the CANCTL1[CLKSRC]
|
||||
* bit needs to get cleared, an optional clock-divider may have
|
||||
* been specified (the default value is 1), the appropriate
|
||||
* MSCAN related MCLK is the input to the MSCAN component
|
||||
*
|
||||
* in the absence of a clock-source spec, first an optimal clock
|
||||
* gets determined based on the 'sys' clock, if that fails the
|
||||
* 'ref' clock is used
|
||||
*/
|
||||
clk_from = CLK_FROM_AUTO;
|
||||
if (clock_source) {
|
||||
/* interpret the device tree's spec for the clock source */
|
||||
if (!strcmp(clock_source, "ip"))
|
||||
clk_from = CLK_FROM_IPS;
|
||||
else if (!strcmp(clock_source, "sys"))
|
||||
clk_from = CLK_FROM_SYS;
|
||||
else if (!strcmp(clock_source, "ref"))
|
||||
clk_from = CLK_FROM_REF;
|
||||
else
|
||||
goto err_invalid;
|
||||
dev_dbg(&ofdev->dev, "got a clk source spec[%d]\n", clk_from);
|
||||
}
|
||||
clockctl = of_iomap(np_clock, 0);
|
||||
if (!clockctl) {
|
||||
dev_err(&ofdev->dev, "couldn't map clock registers\n");
|
||||
goto exit_put;
|
||||
if (clk_from == CLK_FROM_AUTO) {
|
||||
/* no spec so far, try the 'sys' clock; round to the
|
||||
* next MHz and see if we can get a multiple of 16MHz
|
||||
*/
|
||||
dev_dbg(&ofdev->dev, "no clk source spec, trying SYS\n");
|
||||
clk_in = devm_clk_get(&ofdev->dev, "sys");
|
||||
if (IS_ERR(clk_in))
|
||||
goto err_notavail;
|
||||
freq_calc = clk_get_rate(clk_in);
|
||||
freq_calc += 499999;
|
||||
freq_calc /= 1000000;
|
||||
freq_calc *= 1000000;
|
||||
if ((freq_calc % 16000000) == 0) {
|
||||
clk_from = CLK_FROM_SYS;
|
||||
clockdiv = freq_calc / 16000000;
|
||||
dev_dbg(&ofdev->dev,
|
||||
"clk fit, sys[%lu] div[%d] freq[%lu]\n",
|
||||
freq_calc, clockdiv, freq_calc / clockdiv);
|
||||
}
|
||||
}
|
||||
if (clk_from == CLK_FROM_AUTO) {
|
||||
/* no spec so far, use the 'ref' clock */
|
||||
dev_dbg(&ofdev->dev, "no clk source spec, trying REF\n");
|
||||
clk_in = devm_clk_get(&ofdev->dev, "ref");
|
||||
if (IS_ERR(clk_in))
|
||||
goto err_notavail;
|
||||
clk_from = CLK_FROM_REF;
|
||||
freq_calc = clk_get_rate(clk_in);
|
||||
dev_dbg(&ofdev->dev,
|
||||
"clk fit, ref[%lu] (no div) freq[%lu]\n",
|
||||
freq_calc, freq_calc);
|
||||
}
|
||||
|
||||
/* Determine the MSCAN device index from the peripheral's
|
||||
* physical address. Register address offsets against the
|
||||
* IMMR base are: 0x1300, 0x1380, 0x2300, 0x2380
|
||||
/* select IPS or MCLK as the MSCAN input (returned to the caller),
|
||||
* setup the MCLK mux source and rate if applicable, apply the
|
||||
* optionally specified or derived above divider, and determine
|
||||
* the actual resulting clock rate to return to the caller
|
||||
*/
|
||||
pval = of_get_property(ofdev->dev.of_node, "reg", &plen);
|
||||
BUG_ON(!pval || plen < sizeof(*pval));
|
||||
clockidx = (*pval & 0x80) ? 1 : 0;
|
||||
if (*pval & 0x2000)
|
||||
clockidx += 2;
|
||||
|
||||
/*
|
||||
* Clock source and divider selection: 3 different clock sources
|
||||
* can be selected: "ip", "ref" or "sys". For the latter two, a
|
||||
* clock divider can be defined as well. If the clock source is
|
||||
* not specified by the device tree, we first try to find an
|
||||
* optimal CAN source clock based on the system clock. If that
|
||||
* is not posslible, the reference clock will be used.
|
||||
*/
|
||||
if (clock_name && !strcmp(clock_name, "ip")) {
|
||||
switch (clk_from) {
|
||||
case CLK_FROM_IPS:
|
||||
clk_can = devm_clk_get(&ofdev->dev, "ips");
|
||||
if (IS_ERR(clk_can))
|
||||
goto err_notavail;
|
||||
priv = netdev_priv(dev_get_drvdata(&ofdev->dev));
|
||||
priv->clk_can = clk_can;
|
||||
freq_calc = clk_get_rate(clk_can);
|
||||
*mscan_clksrc = MSCAN_CLKSRC_IPS;
|
||||
freq = mpc5xxx_get_bus_frequency(ofdev->dev.of_node);
|
||||
} else {
|
||||
dev_dbg(&ofdev->dev, "clk from IPS, clksrc[%d] freq[%lu]\n",
|
||||
*mscan_clksrc, freq_calc);
|
||||
break;
|
||||
case CLK_FROM_SYS:
|
||||
case CLK_FROM_REF:
|
||||
clk_can = devm_clk_get(&ofdev->dev, "mclk");
|
||||
if (IS_ERR(clk_can))
|
||||
goto err_notavail;
|
||||
priv = netdev_priv(dev_get_drvdata(&ofdev->dev));
|
||||
priv->clk_can = clk_can;
|
||||
if (clk_from == CLK_FROM_SYS)
|
||||
clk_in = devm_clk_get(&ofdev->dev, "sys");
|
||||
if (clk_from == CLK_FROM_REF)
|
||||
clk_in = devm_clk_get(&ofdev->dev, "ref");
|
||||
if (IS_ERR(clk_in))
|
||||
goto err_notavail;
|
||||
clk_set_parent(clk_can, clk_in);
|
||||
freq_calc = clk_get_rate(clk_in);
|
||||
freq_calc /= clockdiv;
|
||||
clk_set_rate(clk_can, freq_calc);
|
||||
freq_calc = clk_get_rate(clk_can);
|
||||
*mscan_clksrc = MSCAN_CLKSRC_BUS;
|
||||
|
||||
pval = of_get_property(ofdev->dev.of_node,
|
||||
"fsl,mscan-clock-divider", &plen);
|
||||
if (pval && plen == sizeof(*pval))
|
||||
clockdiv = *pval;
|
||||
if (!clockdiv)
|
||||
clockdiv = 1;
|
||||
|
||||
if (!clock_name || !strcmp(clock_name, "sys")) {
|
||||
sys_clk = devm_clk_get(&ofdev->dev, "sys_clk");
|
||||
if (IS_ERR(sys_clk)) {
|
||||
dev_err(&ofdev->dev, "couldn't get sys_clk\n");
|
||||
goto exit_unmap;
|
||||
}
|
||||
/* Get and round up/down sys clock rate */
|
||||
sys_freq = 1000000 *
|
||||
((clk_get_rate(sys_clk) + 499999) / 1000000);
|
||||
|
||||
if (!clock_name) {
|
||||
/* A multiple of 16 MHz would be optimal */
|
||||
if ((sys_freq % 16000000) == 0) {
|
||||
clocksrc = 0;
|
||||
clockdiv = sys_freq / 16000000;
|
||||
freq = sys_freq / clockdiv;
|
||||
}
|
||||
} else {
|
||||
clocksrc = 0;
|
||||
freq = sys_freq / clockdiv;
|
||||
}
|
||||
}
|
||||
|
||||
if (clocksrc < 0) {
|
||||
ref_clk = devm_clk_get(&ofdev->dev, "ref_clk");
|
||||
if (IS_ERR(ref_clk)) {
|
||||
dev_err(&ofdev->dev, "couldn't get ref_clk\n");
|
||||
goto exit_unmap;
|
||||
}
|
||||
clocksrc = 1;
|
||||
freq = clk_get_rate(ref_clk) / clockdiv;
|
||||
}
|
||||
dev_dbg(&ofdev->dev, "clk from MCLK, clksrc[%d] freq[%lu]\n",
|
||||
*mscan_clksrc, freq_calc);
|
||||
break;
|
||||
default:
|
||||
goto err_invalid;
|
||||
}
|
||||
|
||||
/* Disable clock */
|
||||
out_be32(&clockctl->mccr[clockidx], 0x0);
|
||||
if (clocksrc >= 0) {
|
||||
/* Set source and divider */
|
||||
val = (clocksrc << 14) | ((clockdiv - 1) << 17);
|
||||
out_be32(&clockctl->mccr[clockidx], val);
|
||||
/* Enable clock */
|
||||
out_be32(&clockctl->mccr[clockidx], val | 0x10000);
|
||||
}
|
||||
/* the above clk_can item is used for the bitrate, access to
|
||||
* the peripheral's register set needs the clk_ipg item
|
||||
*/
|
||||
clk_ipg = devm_clk_get(&ofdev->dev, "ipg");
|
||||
if (IS_ERR(clk_ipg))
|
||||
goto err_notavail_ipg;
|
||||
if (clk_prepare_enable(clk_ipg))
|
||||
goto err_notavail_ipg;
|
||||
priv = netdev_priv(dev_get_drvdata(&ofdev->dev));
|
||||
priv->clk_ipg = clk_ipg;
|
||||
|
||||
/* Enable MSCAN clock domain */
|
||||
val = in_be32(&clockctl->sccr[1]);
|
||||
if (!(val & (1 << 25)))
|
||||
out_be32(&clockctl->sccr[1], val | (1 << 25));
|
||||
/* return the determined clock source rate */
|
||||
return freq_calc;
|
||||
|
||||
dev_dbg(&ofdev->dev, "using '%s' with frequency divider %d\n",
|
||||
*mscan_clksrc == MSCAN_CLKSRC_IPS ? "ips_clk" :
|
||||
clocksrc == 1 ? "ref_clk" : "sys_clk", clockdiv);
|
||||
err_invalid:
|
||||
dev_err(&ofdev->dev, "invalid clock source specification\n");
|
||||
/* clock source rate could not get determined */
|
||||
return 0;
|
||||
|
||||
exit_unmap:
|
||||
iounmap(clockctl);
|
||||
exit_put:
|
||||
of_node_put(np_clock);
|
||||
return freq;
|
||||
err_notavail:
|
||||
dev_err(&ofdev->dev, "cannot acquire or setup bitrate clock source\n");
|
||||
/* clock source rate could not get determined */
|
||||
return 0;
|
||||
|
||||
err_notavail_ipg:
|
||||
dev_err(&ofdev->dev, "cannot acquire or setup register clock\n");
|
||||
/* clock source rate could not get determined */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void mpc512x_can_put_clock(struct platform_device *ofdev)
|
||||
{
|
||||
struct mscan_priv *priv;
|
||||
|
||||
priv = netdev_priv(dev_get_drvdata(&ofdev->dev));
|
||||
if (priv->clk_ipg)
|
||||
clk_disable_unprepare(priv->clk_ipg);
|
||||
}
|
||||
#else /* !CONFIG_PPC_MPC512x */
|
||||
static u32 mpc512x_can_get_clock(struct platform_device *ofdev,
|
||||
@ -244,6 +279,7 @@ static u32 mpc512x_can_get_clock(struct platform_device *ofdev,
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#define mpc512x_can_put_clock NULL
|
||||
#endif /* CONFIG_PPC_MPC512x */
|
||||
|
||||
static const struct of_device_id mpc5xxx_can_table[];
|
||||
@ -385,11 +421,13 @@ static int mpc5xxx_can_resume(struct platform_device *ofdev)
|
||||
static const struct mpc5xxx_can_data mpc5200_can_data = {
|
||||
.type = MSCAN_TYPE_MPC5200,
|
||||
.get_clock = mpc52xx_can_get_clock,
|
||||
/* .put_clock not applicable */
|
||||
};
|
||||
|
||||
static const struct mpc5xxx_can_data mpc5121_can_data = {
|
||||
.type = MSCAN_TYPE_MPC5121,
|
||||
.get_clock = mpc512x_can_get_clock,
|
||||
.put_clock = mpc512x_can_put_clock,
|
||||
};
|
||||
|
||||
static const struct of_device_id mpc5xxx_can_table[] = {
|
||||
|
@ -40,6 +40,7 @@ struct mpc512x_psc_spi {
|
||||
unsigned int irq;
|
||||
u8 bits_per_word;
|
||||
struct clk *clk_mclk;
|
||||
struct clk *clk_ipg;
|
||||
u32 mclk_rate;
|
||||
|
||||
struct completion txisrdone;
|
||||
@ -475,8 +476,6 @@ static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
|
||||
struct spi_master *master;
|
||||
int ret;
|
||||
void *tempp;
|
||||
int psc_num;
|
||||
char clk_name[16];
|
||||
struct clk *clk;
|
||||
|
||||
master = spi_alloc_master(dev, sizeof *mps);
|
||||
@ -519,9 +518,7 @@ static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
|
||||
goto free_master;
|
||||
init_completion(&mps->txisrdone);
|
||||
|
||||
psc_num = master->bus_num;
|
||||
snprintf(clk_name, sizeof(clk_name), "psc%d_mclk", psc_num);
|
||||
clk = devm_clk_get(dev, clk_name);
|
||||
clk = devm_clk_get(dev, "mclk");
|
||||
if (IS_ERR(clk)) {
|
||||
ret = PTR_ERR(clk);
|
||||
goto free_master;
|
||||
@ -532,17 +529,29 @@ static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
|
||||
mps->clk_mclk = clk;
|
||||
mps->mclk_rate = clk_get_rate(clk);
|
||||
|
||||
clk = devm_clk_get(dev, "ipg");
|
||||
if (IS_ERR(clk)) {
|
||||
ret = PTR_ERR(clk);
|
||||
goto free_mclk_clock;
|
||||
}
|
||||
ret = clk_prepare_enable(clk);
|
||||
if (ret)
|
||||
goto free_mclk_clock;
|
||||
mps->clk_ipg = clk;
|
||||
|
||||
ret = mpc512x_psc_spi_port_config(master, mps);
|
||||
if (ret < 0)
|
||||
goto free_clock;
|
||||
goto free_ipg_clock;
|
||||
|
||||
ret = devm_spi_register_master(dev, master);
|
||||
if (ret < 0)
|
||||
goto free_clock;
|
||||
goto free_ipg_clock;
|
||||
|
||||
return ret;
|
||||
|
||||
free_clock:
|
||||
free_ipg_clock:
|
||||
clk_disable_unprepare(mps->clk_ipg);
|
||||
free_mclk_clock:
|
||||
clk_disable_unprepare(mps->clk_mclk);
|
||||
free_master:
|
||||
spi_master_put(master);
|
||||
@ -556,6 +565,7 @@ static int mpc512x_psc_spi_do_remove(struct device *dev)
|
||||
struct mpc512x_psc_spi *mps = spi_master_get_devdata(master);
|
||||
|
||||
clk_disable_unprepare(mps->clk_mclk);
|
||||
clk_disable_unprepare(mps->clk_ipg);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
@ -421,6 +421,7 @@ struct psc_fifoc {
|
||||
|
||||
static struct psc_fifoc __iomem *psc_fifoc;
|
||||
static unsigned int psc_fifoc_irq;
|
||||
static struct clk *psc_fifoc_clk;
|
||||
|
||||
static void mpc512x_psc_fifo_init(struct uart_port *port)
|
||||
{
|
||||
@ -568,36 +569,73 @@ static unsigned int mpc512x_psc_set_baudrate(struct uart_port *port,
|
||||
/* Init PSC FIFO Controller */
|
||||
static int __init mpc512x_psc_fifoc_init(void)
|
||||
{
|
||||
int err;
|
||||
struct device_node *np;
|
||||
struct clk *clk;
|
||||
|
||||
/* default error code, potentially overwritten by clock calls */
|
||||
err = -ENODEV;
|
||||
|
||||
np = of_find_compatible_node(NULL, NULL,
|
||||
"fsl,mpc5121-psc-fifo");
|
||||
if (!np) {
|
||||
pr_err("%s: Can't find FIFOC node\n", __func__);
|
||||
return -ENODEV;
|
||||
goto out_err;
|
||||
}
|
||||
|
||||
clk = of_clk_get(np, 0);
|
||||
if (IS_ERR(clk)) {
|
||||
/* backwards compat with device trees that lack clock specs */
|
||||
clk = clk_get_sys(np->name, "ipg");
|
||||
}
|
||||
if (IS_ERR(clk)) {
|
||||
pr_err("%s: Can't lookup FIFO clock\n", __func__);
|
||||
err = PTR_ERR(clk);
|
||||
goto out_ofnode_put;
|
||||
}
|
||||
if (clk_prepare_enable(clk)) {
|
||||
pr_err("%s: Can't enable FIFO clock\n", __func__);
|
||||
clk_put(clk);
|
||||
goto out_ofnode_put;
|
||||
}
|
||||
psc_fifoc_clk = clk;
|
||||
|
||||
psc_fifoc = of_iomap(np, 0);
|
||||
if (!psc_fifoc) {
|
||||
pr_err("%s: Can't map FIFOC\n", __func__);
|
||||
of_node_put(np);
|
||||
return -ENODEV;
|
||||
goto out_clk_disable;
|
||||
}
|
||||
|
||||
psc_fifoc_irq = irq_of_parse_and_map(np, 0);
|
||||
of_node_put(np);
|
||||
if (psc_fifoc_irq == 0) {
|
||||
pr_err("%s: Can't get FIFOC irq\n", __func__);
|
||||
iounmap(psc_fifoc);
|
||||
return -ENODEV;
|
||||
goto out_unmap;
|
||||
}
|
||||
|
||||
of_node_put(np);
|
||||
return 0;
|
||||
|
||||
out_unmap:
|
||||
iounmap(psc_fifoc);
|
||||
out_clk_disable:
|
||||
clk_disable_unprepare(psc_fifoc_clk);
|
||||
clk_put(psc_fifoc_clk);
|
||||
out_ofnode_put:
|
||||
of_node_put(np);
|
||||
out_err:
|
||||
return err;
|
||||
}
|
||||
|
||||
static void __exit mpc512x_psc_fifoc_uninit(void)
|
||||
{
|
||||
iounmap(psc_fifoc);
|
||||
|
||||
/* disable the clock, errors are not fatal */
|
||||
if (psc_fifoc_clk) {
|
||||
clk_disable_unprepare(psc_fifoc_clk);
|
||||
clk_put(psc_fifoc_clk);
|
||||
psc_fifoc_clk = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/* 512x specific interrupt handler. The caller holds the port lock */
|
||||
@ -619,29 +657,55 @@ static irqreturn_t mpc512x_psc_handle_irq(struct uart_port *port)
|
||||
}
|
||||
|
||||
static struct clk *psc_mclk_clk[MPC52xx_PSC_MAXNUM];
|
||||
static struct clk *psc_ipg_clk[MPC52xx_PSC_MAXNUM];
|
||||
|
||||
/* called from within the .request_port() callback (allocation) */
|
||||
static int mpc512x_psc_alloc_clock(struct uart_port *port)
|
||||
{
|
||||
int psc_num;
|
||||
char clk_name[16];
|
||||
struct clk *clk;
|
||||
int err;
|
||||
|
||||
psc_num = (port->mapbase & 0xf00) >> 8;
|
||||
snprintf(clk_name, sizeof(clk_name), "psc%d_mclk", psc_num);
|
||||
clk = devm_clk_get(port->dev, clk_name);
|
||||
|
||||
clk = devm_clk_get(port->dev, "mclk");
|
||||
if (IS_ERR(clk)) {
|
||||
dev_err(port->dev, "Failed to get MCLK!\n");
|
||||
return PTR_ERR(clk);
|
||||
err = PTR_ERR(clk);
|
||||
goto out_err;
|
||||
}
|
||||
err = clk_prepare_enable(clk);
|
||||
if (err) {
|
||||
dev_err(port->dev, "Failed to enable MCLK!\n");
|
||||
return err;
|
||||
goto out_err;
|
||||
}
|
||||
psc_mclk_clk[psc_num] = clk;
|
||||
|
||||
clk = devm_clk_get(port->dev, "ipg");
|
||||
if (IS_ERR(clk)) {
|
||||
dev_err(port->dev, "Failed to get IPG clock!\n");
|
||||
err = PTR_ERR(clk);
|
||||
goto out_err;
|
||||
}
|
||||
err = clk_prepare_enable(clk);
|
||||
if (err) {
|
||||
dev_err(port->dev, "Failed to enable IPG clock!\n");
|
||||
goto out_err;
|
||||
}
|
||||
psc_ipg_clk[psc_num] = clk;
|
||||
|
||||
return 0;
|
||||
|
||||
out_err:
|
||||
if (psc_mclk_clk[psc_num]) {
|
||||
clk_disable_unprepare(psc_mclk_clk[psc_num]);
|
||||
psc_mclk_clk[psc_num] = NULL;
|
||||
}
|
||||
if (psc_ipg_clk[psc_num]) {
|
||||
clk_disable_unprepare(psc_ipg_clk[psc_num]);
|
||||
psc_ipg_clk[psc_num] = NULL;
|
||||
}
|
||||
return err;
|
||||
}
|
||||
|
||||
/* called from within the .release_port() callback (release) */
|
||||
@ -656,6 +720,10 @@ static void mpc512x_psc_relse_clock(struct uart_port *port)
|
||||
clk_disable_unprepare(clk);
|
||||
psc_mclk_clk[psc_num] = NULL;
|
||||
}
|
||||
if (psc_ipg_clk[psc_num]) {
|
||||
clk_disable_unprepare(psc_ipg_clk[psc_num]);
|
||||
psc_ipg_clk[psc_num] = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/* implementation of the .clock() callback (enable/disable) */
|
||||
|
@ -261,19 +261,8 @@ int fsl_usb2_mpc5121_init(struct platform_device *pdev)
|
||||
struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
|
||||
struct clk *clk;
|
||||
int err;
|
||||
char clk_name[10];
|
||||
int base, clk_num;
|
||||
|
||||
base = pdev->resource->start & 0xf000;
|
||||
if (base == 0x3000)
|
||||
clk_num = 1;
|
||||
else if (base == 0x4000)
|
||||
clk_num = 2;
|
||||
else
|
||||
return -ENODEV;
|
||||
|
||||
snprintf(clk_name, sizeof(clk_name), "usb%d_clk", clk_num);
|
||||
clk = devm_clk_get(pdev->dev.parent, clk_name);
|
||||
clk = devm_clk_get(pdev->dev.parent, "ipg");
|
||||
if (IS_ERR(clk)) {
|
||||
dev_err(&pdev->dev, "failed to get clk\n");
|
||||
return PTR_ERR(clk);
|
||||
|
76
include/dt-bindings/clock/mpc512x-clock.h
Normal file
76
include/dt-bindings/clock/mpc512x-clock.h
Normal file
@ -0,0 +1,76 @@
|
||||
/*
|
||||
* This header provides constants for MPC512x clock specs in DT bindings.
|
||||
*/
|
||||
|
||||
#ifndef _DT_BINDINGS_CLOCK_MPC512x_CLOCK_H
|
||||
#define _DT_BINDINGS_CLOCK_MPC512x_CLOCK_H
|
||||
|
||||
#define MPC512x_CLK_DUMMY 0
|
||||
#define MPC512x_CLK_REF 1
|
||||
#define MPC512x_CLK_SYS 2
|
||||
#define MPC512x_CLK_DIU 3
|
||||
#define MPC512x_CLK_VIU 4
|
||||
#define MPC512x_CLK_CSB 5
|
||||
#define MPC512x_CLK_E300 6
|
||||
#define MPC512x_CLK_IPS 7
|
||||
#define MPC512x_CLK_FEC 8
|
||||
#define MPC512x_CLK_SATA 9
|
||||
#define MPC512x_CLK_PATA 10
|
||||
#define MPC512x_CLK_NFC 11
|
||||
#define MPC512x_CLK_LPC 12
|
||||
#define MPC512x_CLK_MBX_BUS 13
|
||||
#define MPC512x_CLK_MBX 14
|
||||
#define MPC512x_CLK_MBX_3D 15
|
||||
#define MPC512x_CLK_AXE 16
|
||||
#define MPC512x_CLK_USB1 17
|
||||
#define MPC512x_CLK_USB2 18
|
||||
#define MPC512x_CLK_I2C 19
|
||||
#define MPC512x_CLK_MSCAN0_MCLK 20
|
||||
#define MPC512x_CLK_MSCAN1_MCLK 21
|
||||
#define MPC512x_CLK_MSCAN2_MCLK 22
|
||||
#define MPC512x_CLK_MSCAN3_MCLK 23
|
||||
#define MPC512x_CLK_BDLC 24
|
||||
#define MPC512x_CLK_SDHC 25
|
||||
#define MPC512x_CLK_PCI 26
|
||||
#define MPC512x_CLK_PSC_MCLK_IN 27
|
||||
#define MPC512x_CLK_SPDIF_TX 28
|
||||
#define MPC512x_CLK_SPDIF_RX 29
|
||||
#define MPC512x_CLK_SPDIF_MCLK 30
|
||||
#define MPC512x_CLK_SPDIF 31
|
||||
#define MPC512x_CLK_AC97 32
|
||||
#define MPC512x_CLK_PSC0_MCLK 33
|
||||
#define MPC512x_CLK_PSC1_MCLK 34
|
||||
#define MPC512x_CLK_PSC2_MCLK 35
|
||||
#define MPC512x_CLK_PSC3_MCLK 36
|
||||
#define MPC512x_CLK_PSC4_MCLK 37
|
||||
#define MPC512x_CLK_PSC5_MCLK 38
|
||||
#define MPC512x_CLK_PSC6_MCLK 39
|
||||
#define MPC512x_CLK_PSC7_MCLK 40
|
||||
#define MPC512x_CLK_PSC8_MCLK 41
|
||||
#define MPC512x_CLK_PSC9_MCLK 42
|
||||
#define MPC512x_CLK_PSC10_MCLK 43
|
||||
#define MPC512x_CLK_PSC11_MCLK 44
|
||||
#define MPC512x_CLK_PSC_FIFO 45
|
||||
#define MPC512x_CLK_PSC0 46
|
||||
#define MPC512x_CLK_PSC1 47
|
||||
#define MPC512x_CLK_PSC2 48
|
||||
#define MPC512x_CLK_PSC3 49
|
||||
#define MPC512x_CLK_PSC4 50
|
||||
#define MPC512x_CLK_PSC5 51
|
||||
#define MPC512x_CLK_PSC6 52
|
||||
#define MPC512x_CLK_PSC7 53
|
||||
#define MPC512x_CLK_PSC8 54
|
||||
#define MPC512x_CLK_PSC9 55
|
||||
#define MPC512x_CLK_PSC10 56
|
||||
#define MPC512x_CLK_PSC11 57
|
||||
#define MPC512x_CLK_SDHC2 58
|
||||
#define MPC512x_CLK_FEC2 59
|
||||
#define MPC512x_CLK_OUT0_CLK 60
|
||||
#define MPC512x_CLK_OUT1_CLK 61
|
||||
#define MPC512x_CLK_OUT2_CLK 62
|
||||
#define MPC512x_CLK_OUT3_CLK 63
|
||||
#define MPC512x_CLK_CAN_CLK_IN 64
|
||||
|
||||
#define MPC512x_CLK_LAST_PUBLIC 64
|
||||
|
||||
#endif
|
@ -544,6 +544,20 @@ static inline const char *of_clk_get_parent_name(struct device_node *np,
|
||||
* for improved portability across platforms
|
||||
*/
|
||||
|
||||
#if IS_ENABLED(CONFIG_PPC)
|
||||
|
||||
static inline u32 clk_readl(u32 __iomem *reg)
|
||||
{
|
||||
return ioread32be(reg);
|
||||
}
|
||||
|
||||
static inline void clk_writel(u32 val, u32 __iomem *reg)
|
||||
{
|
||||
iowrite32be(val, reg);
|
||||
}
|
||||
|
||||
#else /* platform dependent I/O accessors */
|
||||
|
||||
static inline u32 clk_readl(u32 __iomem *reg)
|
||||
{
|
||||
return readl(reg);
|
||||
@ -554,5 +568,7 @@ static inline void clk_writel(u32 val, u32 __iomem *reg)
|
||||
writel(val, reg);
|
||||
}
|
||||
|
||||
#endif /* platform dependent I/O accessors */
|
||||
|
||||
#endif /* CONFIG_COMMON_CLK */
|
||||
#endif /* CLK_PROVIDER_H */
|
||||
|
Loading…
Reference in New Issue
Block a user