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linux/drivers/pwm
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Anson Huang 9f4c8f9607 pwm: imx: Add ipg clock operation 
i.MX PWM module's ipg_clk_s is for PWM register access, on most of i.MX
SoCs, this ipg_clk_s is from system ipg clock or perclk which is always
enabled, but on i.MX7D, the ipg_clk_s is from PWM1_CLK_ROOT which is
controlled by CCGR132, that means the CCGR132 MUST be enabled first
before accessing PWM registers on i.MX7D. This patch adds ipg clock
operation to make sure register access successfully on i.MX7D and it
fixes Linux kernel boot up hang during PWM driver probe.

Fixes: 4a23e6ee9f ("ARM: dts: imx7d-sdb: Restore pwm backlight support")
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2018-12-24 12:06:56 +01:00
..
core.c
Kconfig pwm: Enable Kona PWM to be built for the Cygnus architecture 2018-12-24 12:06:47 +01:00
Makefile pwm: remove pwm-bfin driver 2018-03-26 15:57:08 +02:00
pwm-ab8500.c
pwm-atmel-hlcdc.c
pwm-atmel-tcb.c pwm: simplify getting .drvdata 2018-04-30 10:40:57 +02:00
pwm-atmel.c
pwm-bcm2835.c pwm: bcm2835: Switch to SPDX identifier 2018-12-24 12:06:55 +01:00
pwm-bcm-iproc.c
pwm-bcm-kona.c
pwm-berlin.c pwm: berlin: Don't use broken prescaler values 2018-07-09 18:57:03 +02:00
pwm-brcmstb.c
pwm-clps711x.c pwm: clps711x: Switch to SPDX identifier 2018-12-24 12:06:56 +01:00
pwm-crc.c
pwm-cros-ec.c pwm: cros-ec: Switch to SPDX identifier 2018-07-09 19:02:23 +02:00
pwm-ep93xx.c
pwm-fsl-ftm.c pwm: fsl-ftm: Enable support for the new SoC i.MX8QM 2018-07-09 19:08:26 +02:00
pwm-hibvt.c
pwm-img.c
pwm-imx.c pwm: imx: Add ipg clock operation 2018-12-24 12:06:56 +01:00
pwm-jz4740.c pwm: jz4740: Add support for devicetree 2018-03-28 00:23:56 +02:00
pwm-lp3943.c treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
pwm-lpc18xx-sct.c pwm: lpc18xx-sct: Don't reconfigure PWM in .request and .free 2018-11-16 11:02:47 +01:00
pwm-lpc32xx.c
pwm-lpss-pci.c
pwm-lpss-platform.c pwm: lpss: Force runtime-resume on suspend on Cherry Trail 2018-10-16 13:15:57 +02:00
pwm-lpss.c pwm: lpss: Only set update bit if we are actually changing the settings 2018-10-16 13:16:15 +02:00
pwm-lpss.h pwm: lpss: Force runtime-resume on suspend on Cherry Trail 2018-10-16 13:15:57 +02:00
pwm-mediatek.c pwm: mediatek: Add MT7628 support 2018-08-20 11:36:07 +02:00
pwm-meson.c pwm: meson: Fix mux clock names 2018-08-20 11:32:25 +02:00
pwm-mtk-disp.c
pwm-mxs.c pwm: mxs: Switch to SPDX identifier 2018-07-12 09:03:06 +02:00
pwm-omap-dmtimer.c pwm: omap-dmtimer: Return -EPROBE_DEFER if no dmtimer platform data 2018-08-20 11:32:19 +02:00
pwm-pca9685.c
pwm-puv3.c pwm: puv3: Delete an error message for a failed memory allocation 2018-03-27 23:27:05 +02:00
pwm-pxa.c
pwm-rcar.c pwm: Use SPDX identifier for Renesas drivers 2018-10-12 13:35:45 +02:00
pwm-renesas-tpu.c pwm: Use SPDX identifier for Renesas drivers 2018-10-12 13:35:45 +02:00
pwm-rockchip.c
pwm-samsung.c
pwm-spear.c
pwm-sti.c
pwm-stm32-lp.c pwm: stm32-lp: Remove useless loop in stm32_pwm_lp_remove() 2018-08-20 11:32:25 +02:00
pwm-stm32.c pwm: Changes for v4.18-rc1 2018-06-14 16:25:43 +09:00
pwm-stmpe.c pwm: stmpe: Fix wrong register offset for hwpwm=2 case 2017-12-05 09:33:05 +01:00
pwm-sun4i.c pwm: sun4i: Simplify controller mapping 2018-03-28 01:12:12 +02:00
pwm-tegra.c pwm: tegra: Remove gratuituous blank line 2018-09-26 16:01:39 +02:00
pwm-tiecap.c
pwm-tiehrpwm.c pwm: tiehrpwm: Fix disabling of output of PWMs 2018-07-09 18:58:22 +02:00
pwm-tipwmss.c
pwm-twl-led.c
pwm-twl.c
pwm-vt8500.c
pwm-zx.c
sysfs.c pwm: Send a uevent on the pwmchip device upon channel sysfs (un)export 2018-10-12 13:51:33 +02:00