Re: [PATCH v4 1/2] dt-bindings: drm/bridge: MHDP8546 bridge binding changes for HDCP

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Hi Parshuram,

Thank you for the patch.

On Thu, Mar 18, 2021 at 07:45:30AM +0100, Parshuram Thombare wrote:
> Add binding changes for HDCP in the MHDP8546 DPI/DP bridge binding.
> 
> Signed-off-by: Parshuram Thombare <pthombar@xxxxxxxxxxx>
> ---
>  .../display/bridge/cdns,mhdp8546.yaml         | 24 +++++++++++--------
>  1 file changed, 14 insertions(+), 10 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.yaml b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.yaml
> index 63427878715e..8a85768f6202 100644
> --- a/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.yaml
> +++ b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.yaml
> @@ -17,8 +17,8 @@ properties:
>        - ti,j721e-mhdp8546
>  
>    reg:
> -    minItems: 1
> -    maxItems: 2
> +    minItems: 2
> +    maxItems: 3
>      items:
>        - description:
>            Register block of mhdptx apb registers up to PHY mapped area (AUX_CONFIG_P).
> @@ -26,13 +26,16 @@ properties:
>            included in the associated PHY.
>        - description:
>            Register block for DSS_EDP0_INTG_CFG_VP registers in case of TI J7 SoCs.
> +      - description:
> +          Register block of mhdptx sapb registers.
>  
>    reg-names:
> -    minItems: 1
> -    maxItems: 2
> +    minItems: 2
> +    maxItems: 3
>      items:
>        - const: mhdptx
>        - const: j721e-intg
> +      - const: mhdptx-sapb
>  
>    clocks:
>      maxItems: 1
> @@ -98,15 +101,15 @@ allOf:
>      then:
>        properties:
>          reg:
> -          minItems: 2
> +          minItems: 3
>          reg-names:
> -          minItems: 2
> +          minItems: 3
>      else:
>        properties:
>          reg:
> -          maxItems: 1
> +          maxItems: 2
>          reg-names:
> -          maxItems: 1
> +          maxItems: 2
>  
>  required:
>    - compatible
> @@ -129,8 +132,9 @@ examples:
>  
>          mhdp: dp-bridge@f0fb000000 {
>              compatible = "cdns,mhdp8546";
> -            reg = <0xf0 0xfb000000 0x0 0x1000000>;
> -            reg-names = "mhdptx";
> +            reg = <0xf0 0xfb000000 0x0 0x1000000>,
> +                  <0x0 0x4f48000 0x0 0x74>;
> +            reg-names = "mhdptx", "mhdptx-sapb";

Running

make dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.yaml

produces

  LINT    Documentation/devicetree/bindings
  CHKDT   Documentation/devicetree/bindings/processed-schema-examples.json
  SCHEMA  Documentation/devicetree/bindings/processed-schema-examples.json
  DTEX    Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.example.dts
  DTC     Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.example.dt.yaml
  CHECK   Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.example.dt.yaml
Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.example.dt.yaml: dp-bridge@f0fb000000: reg-names:1: 'j721e-intg' was expected
        From schema: Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.yaml

This is caused by the fact that reg-names is correctly limited to two
elements, but then expects the second element to be "j721e-intg". The
example is good, so it's the bindings that need to be fixed.

>              clocks = <&mhdp_clock>;
>              phys = <&dp_phy>;
>              phy-names = "dpphy";

-- 
Regards,

Laurent Pinchart
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