linux/drivers/clk
Levin Du 640332d1a0 clk: rockchip: Add pclk_rkpwm_pmu to PMU critical clocks in rk3399
PWM2 is commonly used to control voltage of PWM regulator of VDD_LOG in
RK3399. On the Firefly-RK3399 board, PWM2 outputs 40 KHz square wave
from power on and the VDD_LOG is about 0.9V. When the kernel boots
normally into the system, the PWM2 keeps outputing PWM signal.

But the kernel hangs randomly after "Starting kernel ..." line on that
board. When it happens, PWM2 outputs high level which causes VDD_LOG
drops to 0.4V below the normal operating voltage.

By adding "pclk_rkpwm_pmu" to the rk3399_pmucru_critical_clocks array,
PWM clock is ensured to be prepared at startup and the PWM2 output is
normal. After repeated tests, the early boot hang is gone.

This patch works on both Firefly-RK3399 and ROC-RK3399-PC boards.

Signed-off-by: Levin Du <djw@t-chip.com.cn>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2018-08-06 23:46:52 +02:00
..
actions clk: actions: Add S900 SoC clock support 2018-04-06 14:26:48 -07:00
at91 clk: at91: PLL recalc_rate() now using cached MUL and DIV values 2018-05-15 23:38:31 -07:00
axis
axs10x
bcm treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
berlin This time we have a good set of changes to the core framework that do some 2018-06-09 12:06:24 -07:00
davinci This time we have a good set of changes to the core framework that do some 2018-06-09 12:06:24 -07:00
h8300 clk: h8300: pr_err() strings should end with newlines 2017-12-06 22:40:02 -08:00
hisilicon Merge branches 'clk-imx7d', 'clk-hisi-stub', 'clk-mvebu', 'clk-imx6-epit' and 'clk-debugfs-simple' into clk-next 2018-06-04 12:32:28 -07:00
imgtec
imx This time we have a good set of changes to the core framework that do some 2018-06-09 12:06:24 -07:00
ingenic docs: Fix some broken references 2018-06-15 18:10:01 -03:00
keystone clk: keystone: sci-clk: add support for dynamically probing clocks 2018-03-08 11:43:15 +02:00
loongson1
mediatek Merge branches 'clk-hisi-usb', 'clk-silent-bulk', 'clk-mtk-hdmi', 'clk-mtk-mali' and 'clk-imx6ul-ccosr' into clk-next 2018-06-04 12:27:40 -07:00
meson This time we have a good set of changes to the core framework that do some 2018-06-09 12:06:24 -07:00
microchip
mmp
mvebu This time we have a good set of changes to the core framework that do some 2018-06-09 12:06:24 -07:00
mxs
nxp clk: lpc32xx: Set name of regmap_config 2018-03-19 14:35:16 -07:00
pistachio
pxa clk: pxa: unbreak lookup of CLK_POUT 2017-12-28 10:43:30 -08:00
qcom This time we have a good set of changes to the core framework that do some 2018-06-09 12:06:24 -07:00
renesas treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
rockchip clk: rockchip: Add pclk_rkpwm_pmu to PMU critical clocks in rk3399 2018-08-06 23:46:52 +02:00
samsung This time we have a good set of changes to the core framework that do some 2018-06-09 12:06:24 -07:00
sirf
socfpga clk: socfpga: stratix10: suppress unbinding platform's clock driver 2018-05-15 14:54:52 -07:00
spear clk: spear: fix WDT clock definition on SPEAr600 2018-04-06 13:45:34 -07:00
sprd clk: sprd: add RTC gate for SC9860 2018-03-16 15:53:30 -07:00
st treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
sunxi treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
sunxi-ng clk: sunxi-ng: r40: export a regmap to access the GMAC register 2018-05-17 14:02:07 +08:00
tegra treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
ti treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
uniphier clk: uniphier: add LD11/LD20 stream demux system clock 2018-05-15 14:15:43 -07:00
ux500 clk: ux500: Drop AB8540/9540 support 2018-03-23 09:36:11 -07:00
versatile clk: versatile: Remove WARNs in ->round_rate() 2018-03-16 15:31:16 -07:00
x86 clk: x86: Add ST oscout platform clock 2018-05-17 12:44:06 +02:00
zte clk: move clock common macros out from vendor directories 2017-12-21 15:00:38 -08:00
zynq
clk-asm9260.c treewide: Use struct_size() for kmalloc()-family 2018-06-06 11:15:43 -07:00
clk-aspeed.c This time we have a good set of changes to the core framework that do some 2018-06-09 12:06:24 -07:00
clk-axi-clkgen.c clk: axi-clkgen: Round closest in round_rate() and recalc_rate() 2017-12-21 18:07:53 -08:00
clk-axm5516.c
clk-bulk.c clk: bulk: silently error out on EPROBE_DEFER 2018-05-15 15:16:13 -07:00
clk-cdce706.c
clk-cdce925.c
clk-clps711x.c treewide: Use struct_size() for kmalloc()-family 2018-06-06 11:15:43 -07:00
clk-composite.c
clk-conf.c
clk-cs2000-cp.c clk: cs2000: mark resume function as __maybe_unused 2018-04-16 09:07:22 -07:00
clk-devres.c
clk-divider.c clk: divider: read-only divider can propagate rate change 2018-03-12 15:10:26 -07:00
clk-efm32gg.c treewide: Use struct_size() for kmalloc()-family 2018-06-06 11:15:43 -07:00
clk-fixed-factor.c
clk-fixed-rate.c
clk-fractional-divider.c
clk-gate.c
clk-gemini.c treewide: Use struct_size() for kmalloc()-family 2018-06-06 11:15:43 -07:00
clk-gpio.c clk: clk-gpio: Allow GPIO to sleep in set/get_parent 2018-03-19 13:53:08 -07:00
clk-hi655x.c
clk-highbank.c
clk-hsdk-pll.c
clk-max77686.c
clk-moxart.c
clk-multiplier.c
clk-mux.c clk: honor CLK_MUX_ROUND_CLOSEST in generic clk mux 2018-04-16 09:25:07 -07:00
clk-nomadik.c
clk-npcm7xx.c clk: npcm7xx: fix return value check in npcm7xx_clk_init() 2018-05-01 14:50:29 -07:00
clk-nspire.c
clk-oxnas.c
clk-palmas.c
clk-pwm.c
clk-qoriq.c clk: qoriq: add more divider clocks support 2017-12-21 15:57:28 -08:00
clk-rk808.c
clk-s2mps11.c treewide: Use struct_size() for devm_kmalloc() and friends 2018-06-06 11:15:43 -07:00
clk-scmi.c treewide: Use struct_size() for devm_kmalloc() and friends 2018-06-06 11:15:43 -07:00
clk-scpi.c
clk-si514.c
clk-si544.c clk-si544: Properly round requested frequency to nearest match 2018-06-01 23:24:52 -07:00
clk-si570.c
clk-si5351.c clk: si5351: _si5351_clkout_reset_pll() can be static 2017-12-28 10:49:48 -08:00
clk-si5351.h
clk-stm32f4.c clk: stm32: Add clk entry for SDMMC2 on stm32F769 2018-03-19 13:46:07 -07:00
clk-stm32h7.c treewide: Use struct_size() for kmalloc()-family 2018-06-06 11:15:43 -07:00
clk-stm32mp1.c This time we have a good set of changes to the core framework that do some 2018-06-09 12:06:24 -07:00
clk-tango4.c
clk-twl6040.c
clk-u300.c
clk-versaclock5.c
clk-vt8500.c
clk-wm831x.c
clk-xgene.c
clk.c docs: Fix some broken references 2018-06-15 18:10:01 -03:00
clk.h clk: Move __clk_{get,put}() into private clk.h API 2018-01-04 15:13:29 -08:00
clkdev.c clk: Prepare to remove asm-generic/clkdev.h 2018-01-02 16:12:00 -08:00
Kconfig This time we have a good set of changes to the core framework that do some 2018-06-09 12:06:24 -07:00
Makefile Merge branches 'clk-qcom-rpmh', 'clk-npcm7xx', 'clk-of-parent-count' and 'clk-qcom-rcg-fix' into clk-next 2018-06-04 12:27:29 -07:00