[PATCH 1/2] dt-bindings: pwm: marvell,pxa-pwm: Add SpacemiT K3 PWM support

[Conor Dooley]

On Thu, Apr 09, 2026 at 12:45:11AM +0000, Yixun Lan wrote:
> The PWM controller in SpacemiT K3 SoC reuse the same IP as previous K1
> generation, while the difference is that one additional bus clock is
> added.
> 
> Signed-off-by: Yixun Lan <dlan at kernel.org>
> ---
>  .../devicetree/bindings/pwm/marvell,pxa-pwm.yaml   | 53 ++++++++++++++++++++--
>  1 file changed, 50 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml b/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml
> index 8df327e52810..3427c8ef3945 100644
> --- a/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml
> +++ b/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml
> @@ -15,7 +15,9 @@ allOf:
>        properties:
>          compatible:
>            contains:
> -            const: spacemit,k1-pwm
> +            enum:
> +              - spacemit,k1-pwm
> +              - spacemit,k3-pwm
>      then:
>        properties:
>          "#pwm-cells":
> @@ -26,6 +28,38 @@ allOf:
>            const: 1
>            description: |
>              Used for specifying the period length in nanoseconds.
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - spacemit,k3-pwm
> +    then:
> +      properties:
> +        clock-names:
> +          items:
> +            - const: func
> +            - const: bus

This condition here doesn't appear to do anything? It just repeats
what's already done unconditonally below?

> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - spacemit,k3-pwm
> +    then:
> +      required:
> +        - clock-names
> +      properties:
> +        clocks:
> +          minItems: 2
> +        clock-names:
> +          minItems: 2
> +    else:
> +      properties:
> +        clocks:
> +          maxItems: 1
> +        clock-names:
> +          maxItems: 1
>  
>  properties:
>    compatible:
> @@ -36,7 +70,9 @@ properties:
>            - marvell,pxa168-pwm
>            - marvell,pxa910-pwm
>        - items:
> -          - const: spacemit,k1-pwm
> +          - enum:
> +              - spacemit,k1-pwm
> +              - spacemit,k3-pwm
>            - const: marvell,pxa910-pwm
>  
>    reg:
> @@ -47,7 +83,18 @@ properties:
>      description: Number of cells in a pwm specifier.
>  
>    clocks:
> -    maxItems: 1
> +    minItems: 1
> +    items:
> +      - description: The function clock
> +      - description: An optional bus clock
> +
> +  clock-names:
> +    minItems: 1
> +    maxItems: 2
> +    oneOf:
> +      - items:
> +          - const: func
> +          - const: bus
>  
>    resets:
>      maxItems: 1
> 
> -- 
> 2.53.0
> 
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