[PATCH v2 1/6] dt-bindings: pwm: marvell,pxa-pwm: Add SpacemiT K1 PWM support

[Rob Herring (Arm)]

On Sun, 20 Apr 2025 15:02:46 +0800, Guodong Xu wrote:
> The SpacemiT K1 SoC reuses the Marvell PXA910-compatible PWM controller
> with one notable difference: the addition of a resets property. To make
> the device tree pass schema validation (make dtbs_check W=3), this patch
> updates the binding to accept spacemit,k1-pwm as a compatible string, when
> used in conjunction with the fallback marvell,pxa910-pwm.
> 
> Support for the optional resets property is also added, as it is required
> by the K1 integration but was not present in the original Marvell bindings.
> 
> Since the PWM reset line may be deasserted during the early bootloader
> stage, making the resets property optional avoids potential
> double-deassertion, which could otherwise cause flickering on displays
> that use PWM for backlight control.
> 
> Signed-off-by: Guodong Xu <guodong at riscstar.com>
> ---
> v2: Accept spacemit,k1-pwm as a compatible string, when used in conjunction
>     with the fallback marvell,pxa910-pwm
> 
> .../bindings/pwm/marvell,pxa-pwm.yaml           | 17 ++++++++++++-----
>  1 file changed, 12 insertions(+), 5 deletions(-)
> 

Reviewed-by: Rob Herring (Arm) <robh at kernel.org>