Re: [PATCH V4 2/2] pwm: Add GPIO PWM driver

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Sun, Feb 4, 2024 at 11:09 PM Stefan Wahren <wahrenst@xxxxxxx> wrote:

> From: Vincent Whitchurch <vincent.whitchurch@xxxxxxxx>
>
> Add a software PWM which toggles a GPIO from a high-resolution timer.
>
> This will naturally not be as accurate or as efficient as a hardware
> PWM, but it is useful in some cases.  I have for example used it for
> evaluating LED brightness handling (via leds-pwm) on a board where the
> LED was just hooked up to a GPIO, and for a simple verification of the
> timer frequency on another platform.
>
> Since high-resolution timers are used, sleeping gpio chips are not
> supported and are rejected in the probe function.
>
> Signed-off-by: Vincent Whitchurch <vincent.whitchurch@xxxxxxxx>
> Co-developed-by: Stefan Wahren <wahrenst@xxxxxxx>
> Signed-off-by: Stefan Wahren <wahrenst@xxxxxxx>

This sure looks good to me!
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Yours,
Linus Walleij