[PATCH v2] ARM: imx: Re-introduce the PINCTRL selection

[Arnd Bergmann]

On Wed, Nov 27, 2024, at 20:06, Fabio Estevam wrote:
> From: Fabio Estevam <festevam at denx.de>
>
> Since commit 17d210018914 ("ARM: imx: Allow user to disable pinctrl"),
> the CONFIG_PINCTRL option is no longer implicitly selected, causing
> several i.MX SoC pinctrl drivers no longer getting selected by default.
>
> This causes boot regressions on the ARMv4, ARMv5, ARMv6 and ARMv7
> i.MX SoCs.
>
> Fix it by selecting CONFIG_PINCTRL as before.
>
> This defeats the purpose of 7d210018914 ("ARM: imx: Allow user to disable
> pinctrl"), but it is the less invasive fix for the boot regressions.
>
> The attempt to build Layerscape without pinctrl can still be explored
> later as suggested by Arnd:
>
> "Overall, my best advice here is still to not change the way
> i.MX pinctrl works at all, but just fix Layerscape to not depend
> on i.MX. The reason for the 'select' here is clearly that the
> i.MX machines would fail to boot without pinctrl, and changing
> that because of Layerscape seems backwards."
>
> Fixes: 17d210018914 ("ARM: imx: Allow user to disable pinctrl")
> Reported-by: Guenter Roeck <linux at roeck-us.net>
> Closes: 
> https://lore.kernel.org/linux-arm-kernel/49ff070a-ce67-42d7-84ec-8b54fd7e9742@roeck-us.net/
> Signed-off-by: Fabio Estevam <festevam at denx.de>

Acked-by: Arnd Bergmann <arnd at arndb.de>

     Arnd