[PATCH v12 5/6] pinctrl: s32cc: implement GPIO functionality

[Bartosz Golaszewski]

On Tue, 30 Jun 2026 14:54:02 +0200, Khristine Andreea Barbulescu
<khristineandreea.barbulescu at oss.nxp.com> said:
> From: Andrei Stefanescu <andrei.stefanescu at oss.nxp.com>
>
> The updated SIUL2 block groups pinctrl, GPIO data access
> and interrupt control within the same hardware unit.
> The SIUL2 driver is therefore structured as a monolithic
> pinctrl/GPIO driver.
>
> GPIO data access and direction handling are implemented using the
> gpio-regmap library backed by a virtual regmap. The virtual regmap
> translates the gpio-regmap register model to the underlying SIUL2
> registers: MSCR for direction, PGPDI for input values and PGPDO for
> output values.
>
> The existing pinctrl GPIO callbacks are used for the request/free path:
> they switch the pad to GPIO mode on request and restore the previous
> MSCR configuration when the GPIO is released.
>
> This change came as a result of upstream review in the
> following series:
> https://lore.kernel.org/linux-gpio/20260120115923.3463866-4-khristineandreea.barbulescu@oss.nxp.com/T/#m543c9edbdde74bdc68b6a2364e8b975356c33043
> https://lore.kernel.org/all/20260504131148.3622697-7-khristineandreea.barbulescu@oss.nxp.com/
>
> Support both SIUL2 DT layouts:
> - legacy pinctrl-only binding
> - extended pinctrl/GPIO/irqchip binding
>
> Reviewed-by: Linus Walleij <linusw at kernel.org>
> Signed-off-by: Andrei Stefanescu <andrei.stefanescu at oss.nxp.com>
> Signed-off-by: Khristine Andreea Barbulescu <khristineandreea.barbulescu at oss.nxp.com>
> ---

Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski at oss.qualcomm.com>