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alistair23-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
..
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
core.c pwm: Silently error out on EPROBE_DEFER 2017-07-06 08:29:16 +02:00
pwm-ab8500.c pwm: drop owner assignment from platform_drivers 2014-10-20 16:21:28 +02:00
pwm-atmel-hlcdc.c pwm: atmel-hlcdc: Implement the suspend/resume hooks 2017-04-06 17:45:02 +02:00
pwm-atmel-tcb.c pwm: simplify getting .drvdata 2018-04-30 10:40:57 +02:00
pwm-atmel.c pwm: atmel: Enable PWM on sama5d2 2017-04-06 17:45:03 +02:00
pwm-bcm-iproc.c pwm: Add support for Broadcom iProc PWM controller 2016-07-11 12:49:25 +02:00
pwm-bcm-kona.c pwm: Remove .can_sleep from struct pwm_chip 2017-01-04 09:40:54 +01:00
pwm-bcm2835.c pwm: bcm2835: Switch to SPDX identifier 2018-12-24 12:06:55 +01:00
pwm-berlin.c pwm: berlin: Don't use broken prescaler values 2018-07-09 18:57:03 +02:00
pwm-brcmstb.c pwm: Remove .can_sleep from struct pwm_chip 2017-01-04 09:40:54 +01:00
pwm-clps711x.c pwm: clps711x: Switch to SPDX identifier 2018-12-24 12:06:56 +01:00
pwm-crc.c pwm: Use pwm_get/set_xxx() helpers where appropriate 2016-05-17 14:44:59 +02:00
pwm-cros-ec.c pwm: cros-ec: Switch to SPDX identifier 2018-07-09 19:02:23 +02:00
pwm-ep93xx.c pwm: Add the pwm_is_enabled() helper 2015-07-20 09:46:06 +02:00
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: hibvt: Explicitly request exclusive reset control 2017-08-21 08:52:40 +02:00
pwm-img.c pwm: img: Add runtime PM 2017-11-15 10:38:37 +01:00
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: lpc32xx: Set PWM_PIN_LEVEL bit to default value 2016-07-11 12:49:29 +02:00
pwm-lpss-pci.c pwm: lpss: Set enable-bit before waiting for update-bit to go low 2017-04-06 14:48:14 +02:00
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: Add MediaTek MT2701 display PWM driver support 2016-09-06 10:48:53 +02:00
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: pca9685: clarify pca9685_set_sleep_mode() interface. 2017-07-25 13:41:59 +02:00
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: constify pwm_ops structures 2017-01-19 00:38:17 +01:00
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: rockchip: Add rk3328 support 2017-08-18 17:44:34 +02:00
pwm-samsung.c pwm: pwm-samsung: fix suspend/resume support 2017-08-21 10:39:12 +02:00
pwm-spear.c pwm: drop owner assignment from platform_drivers 2014-10-20 16:21:28 +02:00
pwm-sti.c pwm: Remove .can_sleep from struct pwm_chip 2017-01-04 09:40:54 +01:00
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: tiecap: Set driver data before runtime PM enable 2017-08-21 08:31:37 +02:00
pwm-tiehrpwm.c pwm: tiehrpwm: Fix disabling of output of PWMs 2018-07-09 18:58:22 +02:00
pwm-tipwmss.c pwm: pwm-tipwmss: Remove all runtime PM gets/puts 2016-09-06 10:48:54 +02:00
pwm-twl-led.c mfd: twl: Move header file out of I2C realm 2017-09-04 14:41:02 +01:00
pwm-twl.c mfd: twl: Move header file out of I2C realm 2017-09-04 14:41:02 +01:00
pwm-vt8500.c pwm: vt8500: Undo preparation of a clock source. 2017-07-25 13:43:28 +02:00
pwm-zx.c pwm: Add ZTE ZX PWM device driver 2017-08-21 08:11:24 +02:00
sysfs.c pwm: Send a uevent on the pwmchip device upon channel sysfs (un)export 2018-10-12 13:51:33 +02:00