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The latest kernel PWM drivers enable the polarity settings. When system run from U-Boot to kerenl, if there are differences in polarity set or duty cycle, the PMW will re-init: close -> set polarity and duty cycle -> enable the PWM. The power supply controled by pwm regulator may have voltage shaking, which lead to the system not stable. Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com> Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Acked-by: Simon Glass <sjg@chromium.org> |
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.. | ||
act8846.c | ||
fixed.c | ||
gpio-regulator.c | ||
Kconfig | ||
lp873x_regulator.c | ||
Makefile | ||
max77686.c | ||
palmas_regulator.c | ||
pfuze100.c | ||
pwm_regulator.c | ||
regulator-uclass.c | ||
rk808.c | ||
s5m8767.c | ||
sandbox.c | ||
tps65090_regulator.c |