linux-kernel - Re: [PATCH 3/5] dt-bindings: media: rockchip-vpu: Add PX30 compatible

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Message-ID: <a23ab40e50a761bd2127df6bc8b2a91e99a1617c.camel@pengutronix.de>
Date:   Thu, 07 Jan 2021 15:55:39 +0100
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Jacob Chen <jacob-chen@...wrt.com>,
        Ezequiel Garcia <ezequiel@...labora.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH 3/5] dt-bindings: media: rockchip-vpu: Add PX30
 compatible

Hi Paul,

On Thu, 2021-01-07 at 14:40 +0100, Paul Kocialkowski wrote:
> The Rockchip PX30 SoC has a Hantro VPU that features a decoder (VDPU2)
> and an encoder (VEPU2). It is similar to the RK3399's VPU but takes an
> extra clock (SCLK).
> 
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
> ---
>  .../bindings/media/rockchip-vpu.yaml          | 25 +++++++++++++------
>  1 file changed, 17 insertions(+), 8 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/media/rockchip-vpu.yaml b/Documentation/devicetree/bindings/media/rockchip-vpu.yaml
> index c81dbc3e8960..c446b9ead21b 100644
> --- a/Documentation/devicetree/bindings/media/rockchip-vpu.yaml
> +++ b/Documentation/devicetree/bindings/media/rockchip-vpu.yaml
> @@ -15,10 +15,13 @@ description:
>  
>  properties:
>    compatible:
> -    enum:
> -      - rockchip,rk3288-vpu
> -      - rockchip,rk3328-vpu
> -      - rockchip,rk3399-vpu
> +    oneOf:
> +      - const: rockchip,rk3288-vpu
> +      - const: rockchip,rk3328-vpu
> +      - const: rockchip,rk3399-vpu
> +      - items:
> +        - const: rockchip,px30-vpu
> +        - const: rockchip,rk3399-vpu
>  
>    reg:
>      maxItems: 1
> @@ -35,12 +38,18 @@ properties:
>            - const: vdpu
>  
>    clocks:
> -    maxItems: 2
> +    minItems: 2
> +    maxItems: 3
>  
>    clock-names:
> -    items:
> -      - const: aclk
> -      - const: hclk
> +    oneOf:
> +      - items:
> +        - const: aclk
> +        - const: hclk
> +      - items:
> +        - const: aclk
> +        - const: hclk
> +        - const: sclk

You could make this:

    clock-names:
      minItems: 2
      items:
        - const: aclk
        - const: hclk
        - const: sclk

And then:

allOf:
  - if:
      properties:
        compatible:
          contains:
            const: rockchip,px30-vpu
    then:
      properties:
        clock-names:
          minItems: 3

to make sure each variant has the correct clocks set.

regards
Philipp