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authorOleksandr Suvorov <oleksandr.suvorov@toradex.com>2020-10-27 19:08:54 +0200
committerOleksandr Suvorov <oleksandr.suvorov@toradex.com>2021-03-19 17:00:34 +0200
commit6d0b9b7e8aab837a405a37645e103b21201dc5e4 (patch)
tree30b04d508c2f66b9fe5fede7a675264272bafd62 /arch/arm/boot/.gitignore
parent64f3c21d5edd1953c10e77401b7421360225ae88 (diff)
ARM: imx6: fix setting up pm_power_off callback
It is not necessarily that the system with set up the POWER_RESET_GPIO config option has the enabled device "gpio-poweroff". Without this device the "pm_power_off" callback remains uninitialized and the syscall "reboot" converts the signal LINUX_REBOOT_CMD_POWER_OFF into LINUX_REBOOT_CMD_HALT. This leads to skip calling the callback "pm_power_off_prepare" that should do an important work for iMX6+PF0100 systems: it should turns down all power rails of PMIC PF0100 to emulate a "power off" state as a workaround for a PMIC PF0100 with PMIC_ON_REQ and VCC_BATT is supplied from a battery, leading to unable to restart the module either by RESET or power cycle. Note, that gpio-poweroff device still can grab the pm_power_off callback using the property "force-mode" introduced in the commit: 964f69e00a4d ("power: reset: gpio-poweroff: add force-mode") Enable setting pm_power_off callback on the system with POWER_RESET_GPIO config option. Related-to: ELB-3580 Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com> (cherry-picked from aebbdbb42fbec323d242a6c0fb5fe6c97636ee3e)
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