Re: [PATCH] gpio: mvebu: name regmaps to fix debugfs collisions

[Linus Walleij]

On Sat, Sep 5, 2026 at 2:43 AM Rosen Penev <rosenp@xxxxxxxxx> wrote:

> Each marvell,armada-370-gpio node provides both 'gpio' and 'pwm'
> register windows, and the driver creates one regmap per window on the
> same platform device.  The shared regmap_config was unnamed, so both
> maps defaulted their debugfs directory to dev_name(), e.g.
>
>   debugfs: 'f1018100.gpio' already exists in 'regmap'
>
> because the PWM regmap (and on Armada XP the per-CPU regmap) claimed
> the same directory as the GPIO regmap.
>
> Give each regmap a distinct .name so the debugfs directories become
> '<dev>.gpio', '<dev>.percpu' and '<dev>.pwm'.  This only affects
> debugfs naming; register access is unchanged.
>
> Assisted-by: opencode:big-pickle
> Signed-off-by: Rosen Penev <rosenp@xxxxxxxxx>

Makes sense.
Reviewed-by: Linus Walleij <linusw@xxxxxxxxxx>

Yours,
Linus Walleij