Commit Graph

226 Commits

Author SHA1 Message Date
Stephen Boyd
e3f4358e23 Merge tag 'v4.10-rockchip-clk2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next
Pull rockchip clk driver updates from Heiko Stuebner:

A new clock controller for the rk1108 soc (single-core Cortex-A7+DSP),
a fix making sure the cpuclk rate is actually valid, before trying to
set it and a copy-paste fix for the rk3399's testclk.

* tag 'v4.10-rockchip-clk2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  clk: rockchip: add clock controller for rk1108
  dt-bindings: add documentation for rk1108 cru
  clk: rockchip: add dt-binding header for rk1108
  clk: rockchip: fix copy-paste error in rk3399 testclk
  clk: rockchip: validity should be checked prior to cpu clock rate change
2016-12-06 15:17:26 -08:00
Shawn Lin
e44dde2794 clk: rockchip: add clock controller for rk1108
Add the clock tree definition and driver for rk1108 SoC.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Tested-by: Jacob Chen <jacob2.chen@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-11-16 12:37:37 +01:00
Jianqun Xu
9c496033b3 clk: rockchip: fix copy-paste error in rk3399 testclk
Fix RK3368_* to RK3399_* for rk3399 clk_test clock.

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-11-16 11:57:29 +01:00
Stephen Boyd
09d5dc586b PLL initialization for PLLs having both an integral and fractional mode
(rk3036, rk3399) does now take into account the mode that the PLL is
 actually running at.
 As always also some additional and optimized PLL rates for rk3066 and
 rk3399, some additional clock ids for rk3066 and some additional clocks
 on rk3399 are now sucessfully handled inside their respective driver.
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Merge tag 'v4.10-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next

Pull Rockchip clk driver updates from Heiko Stuebner:

PLL initialization for PLLs having both an integral and fractional mode
(rk3036, rk3399) does now take into account the mode that the PLL is
actually running at.

As always also some additional and optimized PLL rates for rk3066 and
rk3399, some additional clock ids for rk3066 and some additional clocks
on rk3399 are now sucessfully handled inside their respective driver.

* tag 'v4.10-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  clk: rockchip: Ignore frac divisor for PLL equivalence when it's unused
  clk: rockchip: remove more CLK_IGNORE_UNUSED for rk3399 clocktree
  clk: rockchip: add 400MHz to rk3066 clock rates table
  clk: rockchip: optimize 800MHz and 1GHz pll rates on RK3399
  clk: rockchip: Use clock ids for cpu and peri clocks on rk3066
  clk: rockchip: Add binding ids for cpu and peri clocks on rk3066
  clk: rockchip: add 533.25MHz to rk3399 clock rates table
2016-11-14 18:38:35 -08:00
Elaine Zhang
a554bb5fb0 clk: rockchip: validity should be checked prior to cpu clock rate change
If validity is not checked prior to clock rate change, clk_set_rate(
cpu_clk, unsupported_rate) will return success, but the real clock rate
change operation is prohibited in post clock change event. Alough post
clock change event will report error due to unsupported clock rate is
set, but this error message is ignored by clock framework.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Tested-by: Rocky Hao <rocky.hao@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-11-14 12:20:53 +01:00
Julius Werner
bf92384b6d clk: rockchip: Ignore frac divisor for PLL equivalence when it's unused
Rockchip RK3399 PLLs can be used in two separate modes: integral and
fractional. We can select between these two modes with the unambiguously
named DSMPD bit.

During boot, we check all PLL settings to confirm that they match our
PLL table for that frequency, and reinitialize the PLLs where they
don't. The settings checked for this include the fractional divider
field that is only used in fractional mode, even if we're in integral
mode (DSMPD = 1) and that field has no effect.

This patch changes the check to only compare the fractional divider if
we're actually in fractional mode. This way, we won't reinitialize the
PLL in cases where there's absolutely no reason for that, which may
avoid glitching child clocks that should better not be glitched (e.g.
PWM regulators).

Signed-off-by: Julius Werner <jwerner@chromium.org>

[cloned the fix to the pretty similar rk3036 pll]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-11-05 23:16:29 +01:00
Jianqun Xu
161baaea7c clk: rockchip: remove more CLK_IGNORE_UNUSED for rk3399 clocktree
Optimize rk3399 clocktree by removing CLK_IGNORE_UNUSED of some clocks.

clocks will managered by usb:
- clk_usbphy0_480m_src
- clk_usbphy1_480m_src
- clk_usbphy_480m

clocks will be managered by pvtm:
- clk_pvtm_core_l
- clk_pvtm_core_b
- clk_pvtm_ddr

clocks will be managered by dfi:
- pclk_ddr_mon
- clk_dfimon0_timer
- clk_dfimon1_timer
- aclk_dcf
- pclk_dcf

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-11-05 23:12:55 +01:00
Paweł Jarosz
82e56393a8 clk: rockchip: add 400MHz to rk3066 clock rates table
We need this to init PLL_CPLL to 400MHz at boot.

Signed-off-by: Paweł Jarosz <paweljarosz3691@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-11-05 23:11:01 +01:00
Xing Zheng
1dfbec3905 clk: rockchip: optimize 800MHz and 1GHz pll rates on RK3399
Usually, the 800MHz and 1GHz are supplied for CPLL and NPLL in the RK3399.
But dues to the carelessly copying from RK3036 when the RK3399 bringing up,
the refdiv == 6, it will increase the lock time, and it is not an optimal
configuration.

Let's fix them for the lock time and jitter are lower:
800 MHz:
- FVCO == 2.4 GHz, revdiv == 1.
1 GHz:
- FVCO == 3 GHz, revdiv == 1.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-11-02 00:24:11 +01:00
Paweł Jarosz
46dd212a06 clk: rockchip: Use clock ids for cpu and peri clocks on rk3066
Add bindings for ACLK_CPU, HCLK_CPU, PCLK_CPU, ACLK_PERI, HCLK_PERI, PCLK_PERI.

We need this to init it's rate at boot time.

Signed-off-by: Paweł Jarosz <paweljarosz3691@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-10-21 15:27:22 +02:00
Xing Zheng
5c1c63f634 clk: rockchip: add 533.25MHz to rk3399 clock rates table
We need to get the accurate 533.25MHz for the DP display.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-10-21 09:34:19 +02:00
Shawn Lin
4a262b14c5 clk: rockchip: don't return NULL when failing to register ddrclk branch
rockchip_clk_register_ddrclk should not return NULL when failing
to call clk_register, otherwise rockchip_clk_register_branches
prints "unknown clock type". The actual case is that it's a known
clock type but we fail to register it, which may makes user confuse
the reason of failure. And the pr_err here is pointless as
rockchip_clk_register_branches will also print the similar message.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-10-16 02:39:58 +02:00
Stephen Boyd
9bb87c027c The biggest addition is probably the special clock-type for ddr clock
control. While reading that clock is done the normal way from the
 registers, setting it always requires some sort of special handling
 to let the system survive this addition.
 
 As the commit message explains, there are currently 3 handling-types
 known. General SRAM-based code on rk3288 and before (which is waiting
 essentially for the PIE support that is currently being worked on),
 SCPI-based clk setting on the rk3368 through a coprocessor, which we
 might support once the support for legacy scpi-variants has matured
 and now on the rk3399 (and probably later) using a dcf controller that
 is controlled from the arm-trusted-firmware and gets accessed through
 firmware calls from the kernel. This is the variant we currently
 support, but the clock type is made to support the other variants in
 the future as well.
 
 Apart from that slightly bigger chunk, we have a mix of PLL rates,
 clock-ids and flags mainly for the rk3399.
 
 And interestingly an iomap fix for the legacy gate driver, where I
 hopefully could deter the submitter from actually using that in any
 new works.
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Merge tag 'v4.9-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next

Pull rockchip clk driver updates from Heiko Stuebner:

The biggest addition is probably the special clock-type for ddr clock
control. While reading that clock is done the normal way from the
registers, setting it always requires some sort of special handling
to let the system survive this addition.

As the commit message explains, there are currently 3 handling-types
known. General SRAM-based code on rk3288 and before (which is waiting
essentially for the PIE support that is currently being worked on),
SCPI-based clk setting on the rk3368 through a coprocessor, which we
might support once the support for legacy scpi-variants has matured
and now on the rk3399 (and probably later) using a dcf controller that
is controlled from the arm-trusted-firmware and gets accessed through
firmware calls from the kernel. This is the variant we currently
support, but the clock type is made to support the other variants in
the future as well.

Apart from that slightly bigger chunk, we have a mix of PLL rates,
clock-ids and flags mainly for the rk3399.

And interestingly an iomap fix for the legacy gate driver, where I
hopefully could deter the submitter from actually using that in any
new works.

* tag 'v4.9-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  clk: rockchip: use the dclk_vop_frac clock ids on rk3399
  clk: rockchip: drop CLK_SET_RATE_PARENT from rk3399 fractional dividers
  clk: rockchip: add 2016M to big cpu clk rate table on rk3399
  clk: rockchip: add rk3399 ddr clock support
  clk: rockchip: add dclk_vop_frac ids for rk3399 vop
  clk: rockchip: add new clock-type for the ddrclk
  soc: rockchip: add header for ddr rate SIP interface
  clk: rockchip: add SCLK_DDRC id for rk3399 ddrc
  clk: rockchip: handle of_iomap failures in legacy clock driver
  clk: rockchip: mark rk3399 hdcp_noc and vio_noc as critical
  clk: rockchip: use general clock flag when registering pll
  clk: rockchip: delete the CLK_IGNORE_UNUSED from aclk_pcie on rk3399
  clk: rockchip: add 65MHz and 106.5MHz rates to rk3399 plls used for HDMI
2016-09-06 18:12:24 -07:00
Yakir Yang
7b0f9e357a clk: rockchip: use the dclk_vop_frac clock ids on rk3399
Export the dclk_vop_frac out, so we can set the dclk_vop as the
child of dclk_vop_frac, and then we can start to take use of
the fractional dividers.

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-09-04 23:48:19 +02:00
Douglas Anderson
29edeccb44 clk: rockchip: drop CLK_SET_RATE_PARENT from rk3399 fractional dividers
Currently the fractional divider clock time can't handle the
CLK_SET_RATE_PARENT flag. This is because, unlike normal dividers,
there is no clk_divider_bestdiv() function to try speeding up the parent
to see if it helps things.

Eventually someone could try to figure out how to make fractional
dividers able to use CLK_SET_RATE_PARENT, but until they do let's not
confuse the common clock framework (and anyone using it) by setting the
flag.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-09-04 23:45:50 +02:00
Shunqian Zheng
fd75b345bb clk: rockchip: add 2016M to big cpu clk rate table on rk3399
We would prefer the 2016M as 2.0G than 1992M which seems odd, adding
it to big cpu clk rate table then we can set 2016M in dts.

Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com>
Reviewed-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-09-04 22:58:06 +02:00
Lin Huang
464b9eeb97 clk: rockchip: add rk3399 ddr clock support
add ddrc clock setting, so we can do ddr frequency
scaling on rk3399 platform in future.

Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-09-04 22:58:02 +02:00
Lin Huang
a4f182bf81 clk: rockchip: add new clock-type for the ddrclk
Changing the rate of the DDR clock needs special care, as the DDR
is of course in use and will react badly if the rate changes under it.

Over time different approaches to handle that were used.

Past SoCs like the rk3288 and before would store some code in SRAM
while the rk3368 used a SCPI variant and let a coprocessor handle that.

New rockchip platforms like the rk3399 have a dcf controller to do ddr
frequency scaling, and support for this controller will be implemented
in the arm-trusted-firmware.

This new clock-type should over time handle all these methods for
handling DDR rate changes, but right now it will concentrate on the
SIP interface used to talk to ARM trusted firmware.

The SIP interface counterpart was merged from pull-request #684 [0]
into the upstream arm-trusted-firmware codebase.

[0] https://github.com/ARM-software/arm-trusted-firmware/pull/684

Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-09-01 11:23:56 +02:00
Xing Zheng
a45f9d41c9 clk: rockchip: mark aclk_emmc_noc as a critical clock on rk3399
We don't have code to handle any of the noc clocks in rk3399 and they're
all just listed as critical clocks.  Let's do the same for
aclk_emmc_noc.

Without this clock being marked as critical we have problems around
suspend/resume after commit 20c389e656 ("clk: rockchip: fix incorrect
aclk_emmc source gate bits on rk3399").  Before that change we were
presumably not actually gating any of these clocks because we were
setting the wrong gate.

Fixes: 20c389e656 ("clk: rockchip: fix incorrect aclk_emmc source gate bits on rk3399")
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-08-24 23:44:49 +02:00
Arvind Yadav
023a8280b8 clk: rockchip: handle of_iomap failures in legacy clock driver
Check return value of of_iomap and handle errors correctly.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-08-23 18:00:25 +02:00
Xing Zheng
4608d96fb4 clk: rockchip: fix incorrect GATE bits for {c, g}pll_aclk_perihp_src on rk3399
Sorry to refer incorrect clock diagram, we double check it that the bits
configuration of the Xpll_aclk_perihp_src need to be fixed:
bit 1 - shows aclk_perihp_cpll_src_en
bit 0 - shows aclk_perihp_gpll_src_en

Through the testing that plug/unplug the USB ethernet cable on the RK3399 kevin board.

1. the hclk_host0 and hclk_host1 are endpoint clocks:
cpll --> G5[1] --> aclk_perihp_cpll_src --\              |--> hclk_host0
                                          | --> ... ---> |
gpll --> G5[0] --> aclk_perihp_gpll_src --/              |--> hclk_host1

2. there is no clock below the cpll_aclk_perihp_src,
   and the hclk_hostX are below the gpll_aclk_perihp_src:
    pll_cpll                              1            1   800000000          0 0
       cpll                               7           19   800000000          0 0
          cpll_aclk_perihp_src            0            0   800000000          0 0
...
    pll_gpll                              1            1   594000000          0 0
       gpll                              10           10   594000000          0 0
          gpll_aclk_perihp_src            2            2   594000000          0 0
                hclk_perihp               5            5    74250000          0 0
                   hclk_host1_arb         2            2    74250000          0 0
                   hclk_host1             2            2    74250000          0 0
                   hclk_host0_arb         2            2    74250000          0 0
                   hclk_host0             2            2    74250000          0 0

3. by default, G5[0] and G5[1] are enabled:
localhost ~ # mem r 0xff760314
0x000003e0

4. close the G5[1] (aclk_perihp_cpll_src), and plug/unplug USB ethernet cable,
   the DUT still works well:
localhost ~ # mem w 0xff760314 0xffff03e2
localhost ~ # mem r 0xff760314
0x000003e2
plug/unplug, the work statue is ok

5. close the G5[0] (aclk_perihp_gpll_src), , and plug/unplug USB ethernet cable,
   the DUT will be crashed:
localhost ~ # mem w 0xff760314 0xffff03e1
localhost ~ # mem r 0xff760314
0x000003e1
plug/unplug, the DUT is crashed

Summary:
bit 1 - shows aclk_perihp_cpll_src_en
bit 0 - shows aclk_perihp_gpll_src_en

Fixes: 3bd14ae9da ("clk: rockchip: fix incorrect parent for rk3399's {c,g}pll_aclk_perihp_src")
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>

[here the clock-documentation in the manual was actually stating the wrong
bits and thus only Xing's testing above revealed the issue]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-08-12 18:09:19 +02:00
Xing Zheng
20c389e656 clk: rockchip: fix incorrect aclk_emmc source gate bits on rk3399
Dues to incorrect diagram, we need to fix incorrect bits for
(c/g)pll_aclk_emmc_src:
cpll_aclk_emmc_src --> G6[13]
gpll_aclk_emmc_src --> G6[12]

Fixes: 115510053e ("clk: rockchip: add clock controller for the RK3399")
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-08-12 10:04:52 +02:00
Chris Zhong
54479449c8 clk: rockchip: mark rk3399 hdcp_noc and vio_noc as critical
The aclk_vio_noc should be put into critical list, as the interconnect
is not handled right now, but is required by VOP.
And the Type-C DP need these clocks: aclk_hdcp_noc, hclk_hdcp_noc,
pclk_hdcp_noc. Mark them as critical to avoid someone close them.

Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-08-12 00:12:55 +02:00
Chris Zhong
a3f457d963 clk: rockchip: fix rk3399 aclk_vio gate bit
Fix incorrect rk3399 aclk_vio gating bit, it should be 0, not 10.

Fixes: 115510053e ("clk: rockchip: add clock controller for the RK3399")
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Reviewed-by: Xing Zheng <zhengxing@rock-chips.com>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-08-11 23:05:06 +02:00
Heiko Stübner
e6cebc7273 clk: rockchip: use general clock flag when registering pll
Add the general flags the pll list already contains to the clock init,
so that needed clock flags can be used for plls.

Signed-off-by: Heiko Stübner <heiko@sntech.de>
2016-08-08 10:57:21 +02:00
Elaine Zhang
4f4e049167 clk: rockchip: delete the CLK_IGNORE_UNUSED from aclk_pcie on rk3399
allow aclk_pcie and aclk_perf_pcie disabled when unused.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-08-08 10:57:21 +02:00
Xing Zheng
efc4204cf7 clk: rockchip: add 65MHz and 106.5MHz rates to rk3399 plls used for HDMI
We need to add more clocks for supporting more display resolution
for HDMI.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-08-08 10:57:21 +02:00
Stephen Boyd
582e2405b2 Placeholder for the rk3399 watchdog pclk, some newly exported
rk3228 clockids and a small fix for the not yet used spdif to
 displayport clock on the rk3399.
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Merge tag 'v4.8-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next

Pull rockchip clk driver updates from Heiko Stuebner:

Placeholder for the rk3399 watchdog pclk, some newly exported
rk3228 clockids and a small fix for the not yet used spdif to
displayport clock on the rk3399.

* tag 'v4.8-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  clk: rockchip: fix incorrect rk3399 spdif-DPTX divider bits
  clk: rockchip: export rk3228 MAC clocks
  clk: rockchip: rename rk3228 sclk_macphy_50m to sclk_mac_extclk
  clk: rockchip: export rk3228 audio clocks
  clk: rockchip: include rk3228 downstream muxes into fractional dividers
  clk: rockchip: fix incorrect rk3228 clock registers
  clk: rockchip: add clock-ids for rk3228 MAC clocks
  clk: rockchip: add clock-ids for rk3228 audio clocks
  clk: rockchip: add a dummy clock for the watchdog pclk on rk3399
2016-07-01 17:30:42 -07:00
Xing Zheng
3770821fa3 clk: rockchip: fix incorrect rk3399 spdif-DPTX divider bits
The CLKSEL_CON32 bit_0 is controlled for spdif_8ch, not spdif_rec_dptx,
it should be bit_8, let's fix it.

Fixes: 115510053e ("clk: rockchip: add clock controller for the RK3399")
Reported-by: Chris Zhong <zyw@rock-chips.com>
Tested-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Cc: stable@vger.kernel.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-07-01 01:50:17 +02:00
Xing Zheng
6e3732a2be clk: rockchip: export rk3228 MAC clocks
This patch exports related MAC clocks for dts reference.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-07-01 01:50:11 +02:00
Xing Zheng
09f684226d clk: rockchip: rename rk3228 sclk_macphy_50m to sclk_mac_extclk
The sclk_macphy_50m is confusing, the sclk_mac_extclk describes
a external clock  clearly.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-07-01 01:50:06 +02:00
Xing Zheng
a45c072bb4 clk: rockchip: export rk3228 audio clocks
This patch exports related i2s/spdif clocks for dts reference.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-07-01 01:50:02 +02:00
Xing Zheng
cb87df58bc clk: rockchip: include rk3228 downstream muxes into fractional dividers
During the initial conversion to the newly introduced combined fractional
dividers+muxes the rk3228 clocks were left out, so convert them now.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-07-01 01:49:31 +02:00
Xing Zheng
67de7901c4 clk: rockchip: fix incorrect rk3228 clock registers
Due to copy and paste carelessly, RK3288_CLKxxx references are incorrect,
we need to fix them.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-06-22 00:55:03 +02:00
Shawn Lin
62d0e71df0 clk: rockchip: release io resource when failing to init clk on rk3399
We should call iounmap to relase reg_base since it's not going
to be used any more if failing to init clk.

This was missing on the newly added rk3399 clock tree.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-06-03 15:36:49 +02:00
Xing Zheng
26e0ee1c62 clk: rockchip: add a dummy clock for the watchdog pclk on rk3399
Like rk3288, the pclk supplying the watchdog is controlled via the
SGRF register area. Additionally the SGRF isn't even writable in
every boot mode.

But still the clock control is available and in the future someone
might want to use it. Therefore define a simple clock for the time
being so that the watchdog driver can read its rate.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-05-30 09:44:26 +02:00
Xing Zheng
3183c0d519 clk: rockchip: fix cpuclk registration error handling
It maybe due to a copy-paste error the error handing should be
cclk not clk when checking if the cpuclk registration succeeded.

Reported-by: Lin Huang <lin.huang@rock-chips.com>
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-05-30 09:40:23 +02:00
Douglas Anderson
4715f81afc clk: rockchip: Revert "clk: rockchip: reset init state before mmc card initialization"
This reverts commit 7a03fe6f48 ("clk: rockchip: reset init state
before mmc card initialization").

Though not totally obvious from the commit message nor from the source
code, that commit appears to be trying to reset the "_drv" MMC clocks to
90 degrees (note that the "_sample" MMC clocks have a shift of 0 so are
not touched).

The major problem here is that it doesn't properly reset things.  The
phase is a two bit field and the commit only touches one of the two
bits.  Thus the commit had the following affect:
- phase   0  => phase  90
- phase  90  => phase  90
- phase 180  => phase 270
- phase 270  => phase 270

Things get even weirder if you happen to have a bootloader that was
actually using delay elements (should be no reason to, but you never
know), since those are additional bits that weren't touched by the
original patch.

This is unlikely to be what we actually want.  Checking on rk3288-veyron
devices, I can see that the bootloader leaves these clocks as:
- emmc:  phase 180
- sdmmc: phase 90
- sdio0: phase 90

Thus on rk3288-veyron devices the commit we're reverting had the effect
of changing the eMMC clock to phase 270.  This probably explains the
scattered reports I've heard of eMMC devices not working on some veyron
devices when using the upstream kernel.

The original commit was presumably made because previously the kernel
didn't touch the "_drv" phase at all and relied on whatever value was
there when the kernel started.  If someone was using a bootloader that
touched the "_drv" phase then, indeed, we should have code in the kernel
to fix that.  ...and also, to get ideal timings, we should also have the
kernel change the phase depending on the speed mode.  In fact, that's
the subject of a recent patch I posted at
<https://patchwork.kernel.org/patch/9075141/>.

Ideally, we should take both the patch posted to dw_mmc and this
revert.  Since those will likely go through different trees, here I
describe behavior with the combos:

1. Just this revert: likely will fix rk3288-veyron eMMC on some devices
   + other cases; might break someone with a strange bootloader that
   sets the phase to 0 or one that uses delay elements (pretty
   unpredicable what would happen in that case).
2. Just dw_mmc patch: fixes everyone.  Effectly the dw_mmc patch will
   totally override the broken patch and fix everything.
3. Both patches: fixes everyone.  Once dw_mmc is initting properly then
   any defaults from the clock code doesn't mattery.

Fixes: 7a03fe6f48 ("clk: rockchip: reset init state before mmc card initialization")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>

[emmc and sdmmc still work on all current boards in mainline after this
revert, so they should take precedence over any out-of-tree board that
will hopefully again get fixed with the better upcoming dw_mmc change.]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-05-30 09:40:23 +02:00
Xing Zheng
3bd14ae9da clk: rockchip: fix incorrect parent for rk3399's {c,g}pll_aclk_perihp_src
There was a typo, swapping 'c' <--> 'g'.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-05-30 09:40:23 +02:00
Brian Norris
176df69cb0 clk: rockchip: mark rk3399 GIC clocks as critical
We never want to kill the GIC.

Noticed when making other clock fixups, and seeing the newly-constructed
clock tree try to disable cpll, where we had this parent structure:

  aclk_gic <------\
                  |--- aclk_gic_pre <-- cpll <-- pll_cpll
  aclk_gic_noc <--/

Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-05-30 09:40:23 +02:00
Heiko Stuebner
595144c114 clk: rockchip: initialize flags of clk_init_data in mmc-phase clock
The flags element of clk_init_data was never initialized for mmc-
phase-clocks resulting in the element containing a random value
and thus possibly enabling unwanted clock flags.

Fixes: 89bf26cbc1 ("clk: rockchip: Add support for the mmc clock phases using the framework")
Cc: stable@vger.kernel.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-05-30 09:40:23 +02:00
Stephen Boyd
5707291c6c Merge tag 'v4.7-rockchip-clk4' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next
Pull rockchip clk updates from Heiko Stuebner:

Another small rk3399 fixup as well as simplifications around
our handling of the General-Register-Files syscon.

* tag 'v4.7-rockchip-clk4' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  clk: rockchip: drop old_rate calculation on pll rate changes
  clk: rockchip: simplify GRF handling in pll clocks
  clk: rockchip: lookup General Register Files in rockchip_clk_init
  clk: rockchip: fix the rk3399 sdmmc sample / drv name
2016-05-12 14:48:22 -07:00
Heiko Stuebner
7e5385dc72 clk: rockchip: drop old_rate calculation on pll rate changes
Previously when everything happened in the set_rate callbacks itself we
needed the old_rate value for the possible rate rollback, so that made
it easy to also use it in the debug output.

Now with the param-handling being done in separate functions, reading and
recalculating the current pll rate only to use it in a debug message that
won't get displayed in regular cases anyway is quite a waste.

Therefore drop that value from the debug output. In the worst case that
previous rate will have been displayed on the rate change before.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-05-09 16:04:39 +02:00
Heiko Stuebner
c9c3c6eecc clk: rockchip: simplify GRF handling in pll clocks
With the previous commit, the clock drivers now know at init time if the
GRF regmap is available. That means if it isn't available then, it also
won't become available later and we can therefore switch PLLs, that need
the GRF for the lock-status, to read-only mode - similar behaviour as the
aborting of rate changes we did before.

This saves some conditionals on every rate change and we can also drop
the rockchip_clk_get_grf function completely.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-05-09 16:04:15 +02:00
Heiko Stuebner
6f339dc271 clk: rockchip: lookup General Register Files in rockchip_clk_init
In the distant past syscons were initialized pretty late and weren't
available at the time the clock init ran. As the GRF is mainly needed
for PLL lock-status checking, we had this lazy init that tried to grab
the syscon on PLL rate changes and denied these changes if it was not
available.

These days syscons are available very early and recent addition to
rockchip clocks, like the PLL clk_init actually also rely on them
being available at that time, so there is no need to keep that lazy
init around, as it will also result in some more simplifications in
other parts of the clock-code.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-05-09 16:04:11 +02:00
Douglas Anderson
84752e8d8a clk: rockchip: fix the rk3399 sdmmc sample / drv name
The rk3399 clock table had a simple typo in it, calling the SDMMC sample
and drive clocks by the wrong name.  Fix this minor typo.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Acked-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-05-08 22:40:32 +02:00
Stephen Boyd
5569aedf1d A spelling fix and a bunch of rk3399 clock fixes.
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Merge tag 'v4.7-rockchip-clk3' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next

Pull rockchip clk updates from Heiko Stuebner:

A spelling fix and a bunch of rk3399 clock fixes.

* tag 'v4.7-rockchip-clk3' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  clk: rockchip: fix the rk3399 cifout clock
  clk: rockchip: drop unnecessary CLK_IGNORE_UNUSED flags from rk3399
  clk: rockchip: add some frequencies on the rk3399 PLL table
  clk: rockchip: assign more necessary rk3399 clock ids
  clk: rockchip: export some necessary rk3399 clock ids
  clk: rockchip: rename rga clock-id on rk3399
  clk: rockchip: add general gpu soft-reset on rk3399
  clk: rockchip: fix the gate bit for i2c4 and i2c8 on rk3399
  clk: rockchip: fix of spelling mistake on unsuccessful in pll clock type
2016-05-02 16:43:03 -07:00
Xing Zheng
fd8bc82933 clk: rockchip: fix the rk3399 cifout clock
The cifout clock is incorrect due to the manual error, we need to
fix it.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-04-25 22:54:51 +02:00
Xing Zheng
50961e8314 clk: rockchip: drop unnecessary CLK_IGNORE_UNUSED flags from rk3399
We don't need to many clocks enable after startup, to reduce some
power consumption.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-04-25 22:52:26 +02:00
Xing Zheng
aa2897ceb7 clk: rockchip: add some frequencies on the rk3399 PLL table
This patch add some necessary frequencies for the RK3399 clock.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-04-25 22:51:21 +02:00