[PATCH] gpio: ixp4xx: switch to dynamic GPIO base

[Linus Walleij]

On Mon, Apr 27, 2026 at 11:43 PM Mohamed Ayman
<mohamedaymanworkspace at gmail.com> wrote:

> Most IXP4xx platforms are Device Tree-based, and GPIO consumers
> use phandle-based descriptors rather than legacy integer GPIO numbers.
>
> Audit of the IXP4xx platform shows:
> - No gpio_request(), gpio_get_value(), or gpio_set_value() users
>   in arch/arm/mach-ixp4xx/
> - No platform data using fixed GPIO numbers
>
> This switches the gpiochip to dynamic base allocation, aligning
> with modern gpiolib expectations where GPIO numbers are not globally
> fixed and may be assigned dynamically.
>
> Set gpiochip.base = -1 to allow gpiolib to assign the GPIO base
> dynamically, avoiding global GPIO number space conflicts.
>
> Signed-off-by: Mohamed Ayman <mohamedaymanworkspace at gmail.com>

You're right and you beat me to it! No-one is dependent on the
fixed GPIO numbering for this platform.
Reviewed-by: Linus Walleij <linusw at kernel.org>

Yours,
Linus Walleij