[PATCH v2] pinctrl: mediatek: Fix fallback behavior for bias_set_combo

[Chen-Yu Tsai]

On Thu, Jul 1, 2021 at 4:10 PM Hsin-Yi Wang <hsinyi at chromium.org> wrote:
>
> Some pin doesn't support PUPD register, if it fails and fallbacks with
> bias_set_combo case, it will call mtk_pinconf_bias_set_pupd_r1_r0() to
> modify the PUPD pin again.
>
> Since the general bias set are either PU/PD or PULLSEL/PULLEN, try
> bias_set or bias_set_rev1 for the other fallback case. If the pin
> doesn't support neither PU/PD nor PULLSEL/PULLEN, it will return
> -ENOTSUPP.
>
> Fixes: 81bd1579b43e ("pinctrl: mediatek: Fix fallback call path")
> Signed-off-by: Hsin-Yi Wang <hsinyi at chromium.org>

Reviewed-by: Chen-Yu Tsai <wenst at chromium.org>