[PATCH] pmdomain: ti_sci: add wakeup constraint to parent devices of wakeup source

[Ulf Hansson]

On Thu, May 7, 2026 at 5:16 AM Kendall Willis <k-willis at ti.com> wrote:
>
> Set wakeup constraint for any device in a wakeup path. All parent devices
> of a wakeup device should not be turned off during suspend. This ensures
> the wakeup device is kept on while the system is suspended.
>
> Cc: stable at vger.kernel.org
> Fixes: 9d8aa0dd3be4 ("pmdomain: ti_sci: add wakeup constraint management")
> Reported-by: Vitor Soares <vitor.soares at toradex.com>
> Closes: https://lore.kernel.org/linux-pm/c0fe43a2339c802e9ce5900092cd530a2ba17a6b.camel@gmail.com/
> Signed-off-by: Kendall Willis <k-willis at ti.com>

Applied for fixes, thanks!

Kind regards
Uffe


> ---
>  drivers/pmdomain/ti/ti_sci_pm_domains.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/pmdomain/ti/ti_sci_pm_domains.c b/drivers/pmdomain/ti/ti_sci_pm_domains.c
> index 18d33bc35dee1b3bf6107af1e414db377d515199..949e4115f930b93b18216fde46131b5c8931c9aa 100644
> --- a/drivers/pmdomain/ti/ti_sci_pm_domains.c
> +++ b/drivers/pmdomain/ti/ti_sci_pm_domains.c
> @@ -86,7 +86,7 @@ static inline void ti_sci_pd_set_wkup_constraint(struct device *dev)
>         const struct ti_sci_handle *ti_sci = pd->parent->ti_sci;
>         int ret;
>
> -       if (device_may_wakeup(dev)) {
> +       if (device_may_wakeup(dev) || device_wakeup_path(dev)) {
>                 /*
>                  * If device can wakeup using IO daisy chain wakeups,
>                  * we do not want to set a constraint.
>
> ---
> base-commit: 7fd2df204f342fc17d1a0bfcd474b24232fb0f32
> change-id: 20260506-wkup-constraint-9b0261b04df1
>
> Best regards,
> --
> Kendall Willis <k-willis at ti.com>