ARM power domain does NOT support runtime off, always-on flag should be set to avoid incorrect power state in pm_genpd_summary:
Before: root@imx6qpdlsolox:~# cat /sys/kernel/debug/pm_genpd/pm_genpd_summary domain status slaves /device runtime status ---------------------------------------------------------------------- ARM off-0 After: root@imx6qpdlsolox:~# cat /sys/kernel/debug/pm_genpd/pm_genpd_summary domain status slaves /device runtime status ---------------------------------------------------------------------- ARM on Signed-off-by: Anson Huang <anson.hu...@nxp.com> --- drivers/soc/imx/gpc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/soc/imx/gpc.c b/drivers/soc/imx/gpc.c index 53f7275..6cafa9b 100644 --- a/drivers/soc/imx/gpc.c +++ b/drivers/soc/imx/gpc.c @@ -254,6 +254,7 @@ static struct imx_pm_domain imx_gpc_domains[] = { { .base = { .name = "ARM", + .flags = GENPD_FLAG_ALWAYS_ON, }, }, { .base = { -- 2.7.4