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Commit Graph

5933 Commits

Author SHA1 Message Date
Stephen Boyd
47c9e0cef0 Merge branches 'clk-rpi-cpufreq', 'clk-tegra', 'clk-simplify-provider.h', 'clk-sprd' and 'clk-at91' into clk-next
- Support for CPU clks on Raspberry Pi devices
 - Slow clk support for AT91 SAM9X60 SoCs

* clk-rpi-cpufreq:
  clk: raspberrypi: register platform device for raspberrypi-cpufreq
  firmware: raspberrypi: register clk device
  clk: bcm283x: add driver interfacing with Raspberry Pi's firmware
  clk: bcm2835: remove pllb

* clk-tegra:
  clk: tegra: Do not enable PLL_RE_VCO on Tegra210
  clk: tegra: Warn if an enabled PLL is in IDDQ
  clk: tegra: Do not warn unnecessarily
  clk: tegra210: fix PLLU and PLLU_OUT1

* clk-simplify-provider.h:
  clk: consoldiate the __clk_get_hw() declarations
  clk: Unexport __clk_of_table
  clk: Remove ifdef for COMMON_CLK in clk-provider.h

* clk-sprd:
  clk: sprd: Add check for return value of sprd_clk_regmap_init()
  clk: sprd: Check error only for devm_regmap_init_mmio()
  clk: sprd: Switch from of_iomap() to devm_ioremap_resource()

* clk-at91:
  clk: at91: sckc: use dedicated functions to unregister clock
  clk: at91: sckc: improve error path for sama5d4 sck registration
  clk: at91: sckc: remove unnecessary line
  clk: at91: sckc: improve error path for sam9x5 sck register
  clk: at91: sckc: add support to free slow clock osclillator
  clk: at91: sckc: add support to free slow rc oscillator
  clk: at91: sckc: add support to free slow oscillator
  clk: at91: sckc: add support for SAM9X60
  dt-bindings: clk: at91: add bindings for SAM9X60's slow clock controller
  clk: at91: sckc: add support to specify registers bit offsets
  clk: at91: sckc: sama5d4 has no bypass support
2019-07-12 11:11:30 -07:00
Stephen Boyd
a993be3724 Merge branches 'clk-debugfs', 'clk-unused', 'clk-refactor' and 'clk-qoriq' into clk-next
- Add a 'clk_parent' file in clk debugfs
 - Remove dead code in various clk drivers

* clk-debugfs:
  clk: Add clk_parent entry in debugfs

* clk-unused:
  clk: qcom: Fix -Wunused-const-variable
  clk: mmp: frac: Remove set but not used variable 'prev_rate'
  clk: ti: Remove unused functions
  clk: mediatek: mt8516: Remove unused variable

* clk-refactor:
  clk: clk-cdce706: simplify getting the adapter of a client
  clk: Simplify clk_core_can_round()

* clk-qoriq:
  clk: qoriq: add support for lx2160a
2019-07-12 11:11:16 -07:00
Stephen Boyd
dfe1d3a283 Merge branches 'clk-bulk-optional', 'clk-kirkwood', 'clk-socfpga' and 'clk-docs' into clk-next
- Add a clk_bulk_get_optional() API (with devm too)
 - Support for Marvell 98DX1135 SoCs

* clk-bulk-optional:
  clk: Document some devm_clk_bulk*() APIs
  clk: Add devm_clk_bulk_get_optional() function
  clk: Add clk_bulk_get_optional() function

* clk-kirkwood:
  clk: kirkwood: Add support for MV98DX1135
  dt-bindings: clock: mvebu: Add compatible string for 98dx1135 core clock

* clk-socfpga:
  clk: socfpga: stratix10: fix divider entry for the emac clocks
  clk: socfpga: stratix10: add additional clocks needed for the NAND IP

* clk-docs:
  clk: Grammar missing "and", Spelling s/statisfied/satisfied/
2019-07-12 11:11:06 -07:00
Stephen Boyd
e02cb1f593 Merge branches 'clk-ti', 'clk-samsung', 'clk-imx' and 'clk-allwinner' into clk-next
* clk-ti:
  clk: ti: Use int to check return value from of_property_count_elems_of_size()
  firmware: ti_sci: extend clock identifiers from u8 to u32
  clk: keystone: sci-clk: extend clock IDs to 32 bits
  clk: keystone: sci-clk: probe clocks from DT instead of firmware
  clk: keystone: sci-clk: split out the fw clock parsing to own function
  clk: keystone: sci-clk: cut down the clock name length

* clk-samsung:
  clk: samsung: Add bus clock for GPU/G3D on Exynos4412
  clk: samsung: add new clocks for DMC for Exynos5422 SoC
  clk: samsung: add BPLL rate table for Exynos 5422 SoC
  clk: samsung: add needed IDs for DMC clocks in Exynos5420
  clk: samsung: exynos5433: Use of_clk_get_parent_count()

* clk-imx: (38 commits)
  clk: imx8mq: Keep uart clocks on during system boot
  clk: imx: Remove __init for imx_register_uart_clocks() API
  clk: imx6q: fix section mismatch warning
  clk: imx8mq: Use devm_platform_ioremap_resource() instead of of_iomap()
  clk: imx8mq: Use imx_check_clocks() API directly
  clk: imx: Remove __init for imx_check_clocks() API
  clk: imx6sll: Switch to clk_hw based API
  clk: imx7d: Switch to clk_hw based API
  clk: imx6ul: Switch to clk_hw based API
  clk: imx6sx: Switch to clk_hw based API
  clk: imx6q: Switch to clk_hw based API
  clk: imx6sl: Switch to clk_hw based API
  clk: imx: Switch wrappers to clk_hw based API
  clk: imx: clk-fixup-mux: Switch to clk_hw based API
  clk: imx: clk-fixup-div: Switch to clk_hw based API
  clk: imx: clk-gate-exclusive: Switch to clk_hw based API
  clk: imx: clk-pfd: Switch to clk_hw based API
  clk: imx: clk-pllv3: Switch to clk_hw based API
  clk: imx: clk-gate2: Switch to clk_hw based API
  clk: imx: clk-cpu: Switch to clk_hw based API
  ...

* clk-allwinner: (29 commits)
  clk: Simplify debugfs printing and add a newline
  clk: sunxi-ng: sun8i-r: Use local parent references for SUNXI_CCU_GATE
  clk: sunxi-ng: a80-usb: Use local parent references for SUNXI_CCU_GATE
  clk: sunxi-ng: gate: Add macros for referencing local clock parents
  clk: sunxi-ng: h6-r: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: h6: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: a64: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: f1c100s: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: sun8i-r: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: v3s: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: r40: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: h3: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: a33: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: a23: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: a31: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: sun5i: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: a10: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: sun8i-r: Use local parent references for CLK_HW_INIT_*
  clk: sunxi-ng: switch to of_clk_hw_register() for registering clks
  clk: fixed-factor: Add CLK_FIXED_FACTOR_FW_NAME for DT clock-names parent
  ...
2019-07-12 11:10:59 -07:00
Stephen Boyd
1f5d580cab Merge branches 'clk-qcom-gdsc-warn', 'clk-ingenic', 'clk-qcom-qcs404-reset', 'clk-xgene-limit' and 'clk-meson' into clk-next
* clk-qcom-gdsc-warn:
  clk: qcom: gdsc: WARN when failing to toggle

* clk-ingenic:
  MIPS: Remove dead code
  clk: ingenic: Remove unused functions
  MIPS: jz4740: PM: Let CGU driver suspend clocks and set sleep mode
  clk: ingenic: Handle setting the Low-Power Mode bit
  clk: ingenic: Add missing header in cgu.h
  clk: ingenic/jz4725b: Fix "pll half" divider not read/written properly
  clk: ingenic/jz4725b: Fix incorrect dividers for main clocks
  clk: ingenic/jz4770: Fix incorrect dividers for main clocks
  clk: ingenic/jz4740: Fix incorrect dividers for main clocks
  clk: ingenic: Add support for divider tables

* clk-qcom-qcs404-reset:
  clk: gcc-qcs404: Add PCIe resets

* clk-xgene-limit:
  clk: xgene: Don't build COMMON_CLK_XGENE by default

* clk-meson:
  clk: meson: g12a: mark fclk_div3 as critical
  clk: meson: g12a: Add support for G12B CPUB clocks
  dt-bindings: clk: meson: add g12b periph clock controller bindings
  clk: meson-g12a: add temperature sensor clocks
  dt-bindings: clk: g12a-clkc: add Temperature Sensor clock IDs
  clk: meson: meson8b: add the cts_i958 clock
  clk: meson: meson8b: add the cts_mclk_i958 clocks
  clk: meson: meson8b: add the cts_amclk clocks
  dt-bindings: clock: meson8b: add the audio clocks
  clk: meson: g12a: add controller register init
  clk: meson: eeclk: add init regs
  clk: meson: g12a: add mpll register init sequences
  clk: meson: mpll: add init callback and regs
  clk: meson: axg: spread spectrum is on mpll2
  clk: meson: gxbb: no spread spectrum on mpll0
  clk: meson: mpll: properly handle spread spectrum
  clk: meson: meson8b: fix a typo in the VPU parent names array variable
  clk: meson: fix MPLL 50M binding id typo
2019-07-12 11:10:52 -07:00
Stephen Boyd
b6bb2bc2fd Merge branches 'clk-pwm-duty', 'clk-bcm', 'clk-mtk', 'clk-qcom-msm8998-gpu' and 'clk-renesas' into clk-next
- Add support to get duty cycle of generic pwm clks

* clk-pwm-duty:
  clk: pwm: implement the .get_duty_cycle callback

* clk-bcm:
  clk: bcm: Allow CLK_BCM2835 for ARCH_BRCMSTB
  clk: bcm: Make BCM2835 clock drivers selectable

* clk-mtk:
  clk: mediatek: Remove MT8183 unused clock
  clk: mediatek: add audsys clock driver for MT8516
  dt-bindings: mediatek: audsys: add support for MT8516

* clk-qcom-msm8998-gpu:
  dt-bindings: clock: Document gpucc for msm8998

* clk-renesas:
  clk: renesas: cpg-mssr: Use [] to denote a flexible array member
  clk: renesas: cpg-mssr: Combine driver-private and clock array allocation
  clk: renesas: mstp: Combine group-private and clock array allocation
  clk: renesas: div6: Combine clock-private and parent array allocation
  clk: renesas: cpg-mssr: Update kerneldoc for struct cpg_mssr_priv
  clk: renesas: r8a774a1: Add TMU clock
  clk: renesas: r8a77995: Add CMM clocks
  clk: renesas: r8a77990: Add CMM clocks
  clk: renesas: r8a77965: Add CMM clocks
  clk: renesas: r8a7795: Add CMM clocks
  clk: renesas: r9a06g032: Add clock domain support
  dt-bindings: clock: renesas: r9a06g032-sysctrl: Document power Domains
  clk: renesas: mstp: Remove error messages on out-of-memory conditions
  clk: renesas: cpg-mssr: Remove error messages on out-of-memory conditions
  clk: renesas: cpg-mssr: Use genpd of_node instead of local copy
  clk: renesas: r8a7796: Add CMM clocks
  clk: renesas: r8a779{5|6|65}: Add TPU clock
2019-07-12 11:10:43 -07:00
Stephen Rothwell
1df3799243 clk: consoldiate the __clk_get_hw() declarations
Without this we were getting errors like:

In file included from drivers/clk/clkdev.c:22:0:
drivers/clk/clk.h:36:23: error: static declaration of '__clk_get_hw' follows non-static declaration
include/linux/clk-provider.h:808:16: note: previous declaration of '__clk_get_hw' was here

Fixes: 59fcdce425 ("clk: Remove ifdef for COMMON_CLK in clk-provider.h")
fixes: 73e0e496af ("clkdev: Always allocate a struct clk and call __clk_get() w/ CCF")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-07-12 11:00:14 -07:00
Chunyan Zhang
c974c48dee clk: sprd: Add check for return value of sprd_clk_regmap_init()
sprd_clk_regmap_init() doesn't always return success, adding check
for its return value should make the code more strong.

Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
[sboyd@kernel.org: Add a missing int ret]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-27 15:08:29 -07:00
Claudiu Beznea
ecbcc2aa65 clk: at91: sckc: use dedicated functions to unregister clock
Use at91 specific functions to free all resources in case of error.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-27 11:18:21 -07:00
Claudiu Beznea
d09e6ca138 clk: at91: sckc: improve error path for sama5d4 sck registration
Improve error path for sama5d4 sck registration.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-27 11:18:20 -07:00
Claudiu Beznea
8c938c2d00 clk: at91: sckc: remove unnecessary line
Remove unnecessary line.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-27 11:18:20 -07:00
Claudiu Beznea
82e25dc8f6 clk: at91: sckc: improve error path for sam9x5 sck register
Improve error path for sam9x5 slow clock registration.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-27 11:18:19 -07:00
Claudiu Beznea
016d22dd10 clk: at91: sckc: add support to free slow clock osclillator
Add support to free slow clock oscillator resources.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-27 11:18:18 -07:00
Claudiu Beznea
036702468c clk: at91: sckc: add support to free slow rc oscillator
Add support to free slow rc oscillator resources.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-27 11:18:17 -07:00
Claudiu Beznea
7fb791d079 clk: at91: sckc: add support to free slow oscillator
Add support to free slow oscillator resources.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-27 11:18:16 -07:00
Claudiu Beznea
04bcc4275e clk: at91: sckc: add support for SAM9X60
Add support for SAM9X60's slow clock.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-26 11:33:55 -07:00
Claudiu Beznea
abaceffc88 clk: at91: sckc: add support to specify registers bit offsets
Different IPs uses different bit offsets in registers for the same
functionality, thus adapt the driver to support this.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-26 11:32:53 -07:00
Claudiu Beznea
5cf6d876a7 clk: at91: sckc: sama5d4 has no bypass support
The slow clock of SAMA5D4 has no bypass support thus remove it.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-26 11:32:11 -07:00
Chunyan Zhang
78f5296951 clk: sprd: Check error only for devm_regmap_init_mmio()
The function devm_regmap_init_mmio() wouldn't return NULL pointer for
now, so only need to ensure the return value is not an error code.

Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-26 11:15:08 -07:00
Chunyan Zhang
69b39d2503 clk: sprd: Switch from of_iomap() to devm_ioremap_resource()
devm_ioremap_resources() automatically requests resources and devm_ wrappers
do better error handling and unmapping of the I/O region when needed,
that would make drivers more clean and simple.

Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-26 11:12:50 -07:00
Thierry Reding
e3527dca15 clk: tegra: Do not enable PLL_RE_VCO on Tegra210
It turns out that this PLL is not used on Tegra210, so there's no need
to enable it via the init table. Remove the init table entry for this
PLL to avoid it getting enabled at boot time. If the bootloader enabled
it and forgot to turn it off, the common clock framework will now know
to disable it because it is unused.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 16:12:55 -07:00
Thierry Reding
c1139d2083 clk: tegra: Warn if an enabled PLL is in IDDQ
A PLL in IDDQ doesn't work, whether it's enabled or not. This is not a
configuration that makes sense, so warn about it.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 16:10:28 -07:00
Thierry Reding
2067507012 clk: tegra: Do not warn unnecessarily
There is no need to warn if the reference PLL is enabled with the
correct defaults. Only warn if the boot values don't match the defaults.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 16:10:21 -07:00
JC Kuo
0d34dfbf30 clk: tegra210: fix PLLU and PLLU_OUT1
Full-speed and low-speed USB devices do not work with Tegra210
platforms because of incorrect PLLU/PLLU_OUT1 clock settings.

When full-speed device is connected:
[   14.059886] usb 1-3: new full-speed USB device number 2 using tegra-xusb
[   14.196295] usb 1-3: device descriptor read/64, error -71
[   14.436311] usb 1-3: device descriptor read/64, error -71
[   14.675749] usb 1-3: new full-speed USB device number 3 using tegra-xusb
[   14.812335] usb 1-3: device descriptor read/64, error -71
[   15.052316] usb 1-3: device descriptor read/64, error -71
[   15.164799] usb usb1-port3: attempt power cycle

When low-speed device is connected:
[   37.610949] usb usb1-port3: Cannot enable. Maybe the USB cable is bad?
[   38.557376] usb usb1-port3: Cannot enable. Maybe the USB cable is bad?
[   38.564977] usb usb1-port3: attempt power cycle

This commit fixes the issue by:
 1. initializing PLLU_OUT1 before initializing XUSB_FS_SRC clock
    because PLLU_OUT1 is parent of XUSB_FS_SRC.
 2. changing PLLU post-divider to /2 (DIVP=1) according to Technical
    Reference Manual.

Fixes: e745f992cf ("clk: tegra: Rework pll_u")
Signed-off-by: JC Kuo <jckuo@nvidia.com>
Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 16:08:23 -07:00
Nicolas Saenz Julienne
e2bb18347c clk: raspberrypi: register platform device for raspberrypi-cpufreq
As 'clk-raspberrypi' depends on RPi's firmware interface, which might be
configured as a module, the cpu clock might not be available for the
cpufreq driver during it's init process. So we register the
'raspberrypi-cpufreq' platform device after the probe sequence succeeds.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 16:04:28 -07:00
Nicolas Saenz Julienne
4e85e535e6 clk: bcm283x: add driver interfacing with Raspberry Pi's firmware
Raspberry Pi's firmware offers an interface though which update it's
clock's frequencies. This is specially useful in order to change the CPU
clock (pllb_arm) which is 'owned' by the firmware and we're unable to
scale using the register interface provided by clk-bcm2835.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 16:04:23 -07:00
Nicolas Saenz Julienne
2256d89333 clk: bcm2835: remove pllb
Raspberry Pi's firmware controls this pll, we should use the firmware
interface to access it.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 16:04:15 -07:00
Vabhav Sharma
78a5ba8f91 clk: qoriq: add support for lx2160a
Add clockgen support and configuration for NXP SoC lx2160a
with compatible property as "fsl,lx2160a-clockgen".

Signed-off-by: Tang Yuantian <andy.tang@nxp.com>
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
Signed-off-by: Vabhav Sharma <vabhav.sharma@nxp.com>
Acked-by: Scott Wood <oss@buserror.net>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 15:58:18 -07:00
Wolfram Sang
df095f996b clk: clk-cdce706: simplify getting the adapter of a client
We have a dedicated pointer for that, so use it. Much easier to read and
less computation involved.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 15:55:39 -07:00
Nathan Huckleberry
da642427bd clk: qcom: Fix -Wunused-const-variable
Clang produces the following warning

drivers/clk/qcom/gcc-msm8996.c:133:32: warning: unused variable
'gcc_xo_gpll0_gpll2_gpll3_gpll0_early_div_map' [-Wunused-const-variable]
static const struct
parent_map gcc_xo_gpll0_gpll2_gpll3_gpll0_early_div_map[] =
{ ^drivers/clk/qcom/gcc-msm8996.c:141:27: warning: unused variable
'gcc_xo_gpll0_gpll2_gpll3_gpll0_early_div' [-Wunused-const-variable] static
const char * const gcc_xo_gpll0_gpll2_gpll3_gpll0_early_div[] = { ^
drivers/clk/qcom/gcc-msm8996.c:187:32: warning: unused variable
'gcc_xo_gpll0_gpll2_gpll3_gpll1_gpll4_gpll0_early_div_map'
[-Wunused-const-variable] static const struct parent_map
gcc_xo_gpll0_gpll2_gpll3_gpll1_gpll4_gpll0_early_div_map[] = { ^
drivers/clk/qcom/gcc-msm8996.c:197:27: warning: unused variable
'gcc_xo_gpll0_gpll2_gpll3_gpll1_gpll4_gpll0_early_div'
[-Wunused-const-variable] static const char * const
gcc_xo_gpll0_gpll2_gpll3_gpll1_gpll4_gpll0_early_div[] = {

It looks like these were never used.

Fixes: b1e010c073 ("clk: qcom: Add MSM8996 Global Clock Control (GCC) driver")
Cc: clang-built-linux@googlegroups.com
Link: https://github.com/ClangBuiltLinux/linux/issues/518
Suggested-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 15:49:38 -07:00
Paul Cercueil
9a838844a0 clk: ingenic: Remove unused functions
These functions are not called anywhere anymore, they can safely be
removed.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 15:43:39 -07:00
Paul Cercueil
2ee93e3c95 clk: ingenic: Handle setting the Low-Power Mode bit
The Low-Power Mode, when enabled, will make the "wait" MIPS instruction
suspend the system.

This is not really clock-related, but this bit happens to be in the
register set of the CGU.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 15:43:15 -07:00
Paul Cercueil
dbc38ad0e7 clk: ingenic: Add missing header in cgu.h
The cgu.h has structures that contain 'clk_onecell_data' and 'clk_hw'
structures (no pointers), so the <linux/clk-provider.h> header should be
included.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
[sboyd@kernel.org: Drop removal of includes in drivers]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 15:41:48 -07:00
Leonard Crestez
e5e89247a7 clk: Add clk_parent entry in debugfs
This allows to easily determine the parent in shell scripts without
parsing more complex files.

Add the clk_parent file for all clks which can have a parent, not just
muxes. This way it can be used to determine the clk tree structure
without parsing more complex files.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 14:53:10 -07:00
Geert Uytterhoeven
65e2218d10 clk: Grammar missing "and", Spelling s/statisfied/satisfied/
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 14:51:35 -07:00
Geert Uytterhoeven
eef1f1b6cf clk: Simplify clk_core_can_round()
A boolean expression already evaluates to true or false, so there is no
need to check the result and return true or false explicitly.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 14:50:45 -07:00
Dinh Nguyen
16e3c572cd clk: socfpga: stratix10: fix divider entry for the emac clocks
The fixed dividers for the emac clocks should be 2 not 4.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 14:39:51 -07:00
Dinh Nguyen
3b5015c4d8 clk: socfpga: stratix10: add additional clocks needed for the NAND IP
The nand_clk is actually called the nand_x_clk and the parent is the
l4_mp_clk, not the l4_main_clk. The nand_clk is a child of the
nand_x_clk and has a fixed divider of 4. The same is true for the
nand_ecc_clk.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 14:36:56 -07:00
Chris Packham
88aa7af9c1 clk: kirkwood: Add support for MV98DX1135
The 98DX1135 is a switch chip with an integrated CPU. This is similar to
the 98DX4122 except that the core clock speed is fixed to 166Mhz.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 14:35:21 -07:00
Sylwester Nawrocki
9bd5ef0bd8 clk: Add devm_clk_bulk_get_optional() function
Add managed version of the clk_bulk_get_optional() helper function.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
[sboyd@kernel.org: Mark __devm_clk_bulk_get() static]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 14:28:01 -07:00
Sylwester Nawrocki
2f25528e4e clk: Add clk_bulk_get_optional() function
clk_bulk_get_optional() allows to get a group of clocks where one
or more is optional.  For a not available clock, e.g. not specifed
in the clock consumer node in DT, its respective struct clk pointer
will be NULL.  This allows for operating on a group of returned
clocks (struct clk_bulk_data array) with existing clk_bulk* APIs.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 14:28:01 -07:00
Stephen Boyd
11f6c2307c clk: Simplify debugfs printing and add a newline
The possible parent printing function duplicates a bunch of if
conditions. Pull that into another function so we can print an extra
character at the end, either a space or a newline. This way we can add
the required newline that got lost here and also shorten the code.

Fixes: 2d156b78ce ("clk: Fix debugfs clk_possible_parents for clks without parent string names")
Cc: Chen-Yu Tsai <wens@csie.org>
Tested-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-25 11:56:04 -07:00
Stephen Boyd
f925a054f0 Allwinner sunxi-ng clk driver parent relation rewrite part 1 - take 2
The first part of ongoing work to convert the sunxi-ng clk driver from
 using global clock name strings to describe clk parenting, to having
 direct struct clk_hw pointers, or local names based on clock-names from
 the device tree binding.
 
 This is based on Stephen Boyd's recent work allowing clk drivers to
 specify clk parents using struct clk_hw * or parsing DT phandles in the
 clk node.
 
 This series can be split into a few major parts:
 
 1) The first patch is a small fix for clk debugfs representation.
 
 2) A bunch of CLK_HW_INIT_* helper macros are added. These cover the
    situations I encountered, or assume I will encounter, such as single
    internal (struct clk_hw *) parent, single DT (struct clk_parent_data
    .fw_name), multiple internal parents, and multiple mixed (internal +
    DT) parents. A special variant for just an internal single parent is
    added, CLK_HW_INIT_HWS, which lets the driver share the singular
    list, instead of having the compiler create a compound literal every
    time. It might even make sense to only keep this variant.
 
 3) A bunch of CLK_FIXED_FACTOR_* helper macros are added. The rationale
    is the same as the single parent CLK_HW_INIT_* helpers.
 
 4) Bulk conversion of CLK_FIXED_FACTOR to use local parent references,
    either struct clk_hw * or DT .fw_name types, whichever the hardware
    requires.
 
 5) The beginning of SUNXI_CCU_GATE conversion to local parent
    references. This part is not done. They are included as justification
    and examples for the shared list of clk parents case.
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Merge tag 'sunxi-ng-parent-rewrite-part-1-take-2' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into clk-allwinner

Pull Allwinner sunxi-ng clk driver parent relation rewrite part 1 - take 2
from Chen-Yu Tsai:

"The first part of ongoing work to convert the sunxi-ng clk driver from
using global clock name strings to describe clk parenting, to having
direct struct clk_hw pointers, or local names based on clock-names from
the device tree binding.

This is based on Stephen Boyd's recent work allowing clk drivers to
specify clk parents using struct clk_hw * or parsing DT phandles in the
clk node.

This series can be split into a few major parts:

1) The first patch is a small fix for clk debugfs representation.

2) A bunch of CLK_HW_INIT_* helper macros are added. These cover the
   situations I encountered, or assume I will encounter, such as single
   internal (struct clk_hw *) parent, single DT (struct clk_parent_data
   .fw_name), multiple internal parents, and multiple mixed (internal +
   DT) parents. A special variant for just an internal single parent is
   added, CLK_HW_INIT_HWS, which lets the driver share the singular
   list, instead of having the compiler create a compound literal every
   time. It might even make sense to only keep this variant.

3) A bunch of CLK_FIXED_FACTOR_* helper macros are added. The rationale
   is the same as the single parent CLK_HW_INIT_* helpers.

4) Bulk conversion of CLK_FIXED_FACTOR to use local parent references,
   either struct clk_hw * or DT .fw_name types, whichever the hardware
   requires.

5) The beginning of SUNXI_CCU_GATE conversion to local parent
   references. This part is not done. They are included as justification
   and examples for the shared list of clk parents case."

* tag 'sunxi-ng-parent-rewrite-part-1-take-2' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux: (25 commits)
  clk: sunxi-ng: sun8i-r: Use local parent references for SUNXI_CCU_GATE
  clk: sunxi-ng: a80-usb: Use local parent references for SUNXI_CCU_GATE
  clk: sunxi-ng: gate: Add macros for referencing local clock parents
  clk: sunxi-ng: h6-r: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: h6: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: a64: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: f1c100s: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: sun8i-r: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: v3s: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: r40: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: h3: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: a33: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: a23: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: a31: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: sun5i: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: a10: Use local parent references for CLK_FIXED_FACTOR
  clk: sunxi-ng: sun8i-r: Use local parent references for CLK_HW_INIT_*
  clk: sunxi-ng: switch to of_clk_hw_register() for registering clks
  clk: fixed-factor: Add CLK_FIXED_FACTOR_FW_NAME for DT clock-names parent
  clk: fixed-factor: Add CLK_FIXED_FACTOR_HWS which takes list of struct clk_hw *
  ...
2019-06-24 18:28:31 -07:00
Anson Huang
15c64ff762 clk: imx8mq: Keep uart clocks on during system boot
Call imx_register_uart_clocks() API to keep uart clocks enabled
when earlyprintk or earlycon is active.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-06-24 09:43:40 +08:00
Anson Huang
e5190586a9 clk: imx: Remove __init for imx_register_uart_clocks() API
Some of i.MX SoCs' clock driver use platform driver model,
and they need to call imx_register_uart_clocks() API, so
imx_register_uart_clocks() API should NOT be in .init section.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-06-24 09:43:29 +08:00
Chen-Yu Tsai
89f27fb2dd clk: sunxi-ng: sun8i-r: Use local parent references for SUNXI_CCU_GATE
With the new clk parenting code and SUNXI_CCU_GATE macros, we can
reference parents locally via pointers to struct clk_hw or DT
clock-names.

Convert existing SUNXI_CCU_GATE definitions to SUNXI_CCU_GATE_HWS
as the parent clock is internal to this clock unit.

To avoid duplication of clock definitions, we fix up the parent
reference for A83T in the A83T init function.

Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2019-06-22 10:13:16 +08:00
Chen-Yu Tsai
4b88915184 clk: sunxi-ng: a80-usb: Use local parent references for SUNXI_CCU_GATE
With the new clk parenting code and SUNXI_CCU_GATE macros, we can
reference parents locally via pointers to struct clk_hw or DT
clock-names.

Convert existing SUNXI_CCU_GATE definitions to SUNXI_CCU_GATE_DATA to
specify the parent clock.

Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2019-06-22 10:13:16 +08:00
Chen-Yu Tsai
4b751ffae7 clk: sunxi-ng: gate: Add macros for referencing local clock parents
With the new clk parenting code, clk_init_data was expanded to include
.parent_hws, for clk drivers to directly reference parents by clk_hw,
and .parent_data, for clk drivers to specify parents using a combination
of device tree clock-names, pointers to struct clk_hw, device tree clocks,
and/or fallback global clock names.

Add four new macros:

  - SUNXI_CCU_GATE_HW, that can take a struct clk_hw pointer, instead
    of a string, as its parent.

  - SUNXI_CCU_GATE_FW that takes a string to match a clock-names entry
    in the device tree to specify the clock parent.

  - SUNXI_CCU_GATE_HWS that takes an array of struct clk_hw * as its
    parent. This allows the array to be shared with other clk
    declarations.

  - SUNXI_CCU_GATE_DATA that takes an array of struct clk_parent_data *
    as its parent. This allows the array to be shared with other clk
    declarations.

Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2019-06-22 10:13:16 +08:00
Chen-Yu Tsai
22ce173f76 clk: sunxi-ng: h6-r: Use local parent references for CLK_FIXED_FACTOR
With the new clk parenting code and CLK_FIXED_FACTOR_{HW,FW_NAME}
macros, we can reference parents locally via pointers to struct clk_hw
or DT clock-names.

Convert existing CLK_FIXED_FACTOR definitions to either the _HW or
_FW_NAME variant based on whether the parent clock is internal or
external to the CCU.

Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2019-06-22 10:13:16 +08:00
Chen-Yu Tsai
8916d3fc3a clk: sunxi-ng: h6: Use local parent references for CLK_FIXED_FACTOR
With the new clk parenting code and CLK_FIXED_FACTOR_{HW,FW_NAME}
macros, we can reference parents locally via pointers to struct clk_hw
or DT clock-names.

Convert existing CLK_FIXED_FACTOR definitions to either the _HW or
_FW_NAME variant based on whether the parent clock is internal or
external to the CCU.

A forward declaration for struct clk_fixed_factor pll_periph0_4x_clk
is added as the definitions of the fixed factor clocks appear much later
in the file. The position of fixed factor clock definitions will be
moved for all drivers at a later time, before the conversion of all
other clock types.

Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2019-06-22 10:13:16 +08:00