Hi Russell, On Fri, Nov 17, 2017 at 10:45 AM, Russell King - ARM Linux <linux@xxxxxxxxxxxxxxx> wrote: > The LED is wired to the 3.3V supply, and most likely the PWM output goes > low when the SoC suspends. As SolidRun boards don't have support for > powering down the board supplies, the 3.3V supply does not collapse on > suspend. I managed to fix this by introducing pinctrl_pm_select_sleep_state() support into drivers/leds/leds-pwm.c. Here is the complete change: https://pastebin.com/FCsLMuW1 Now I can get the LED to be turned off during suspend. I will separate the changes and submit the patches. Thanks