Re: [PATCH v3 10/15] dt-bindings: media: qcom,qcm2290-camss: Add OPE ISP subnode

[Rob Herring <robh@kernel.org>]

On Fri, May 08, 2026 at 12:49:25AM +0200, Loic Poulain wrote:
> Extend the qcm2290 CAMSS binding to describe CAMSS as a simple bus by
> allowing child ISP nodes. Add the required address and size cells, as
> well as ranges, and validate ISP subnodes against the existing
> qcom,qcm2290-camss-ope schema.
> 
> On qcm2290 the OPE (Offline Processing Engine) is a memory-to-memory
> ISP (Image Signal Processor).
> 
> The address-cells for the CAMSS bus is <2> (64-bit) as related
> DMA/IOMMUs offer 36-bit addressing support.
> 
> Signed-off-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
> ---
>  .../devicetree/bindings/media/qcom,qcm2290-camss.yaml       | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/media/qcom,qcm2290-camss.yaml b/Documentation/devicetree/bindings/media/qcom,qcm2290-camss.yaml
> index 391d0f6f67ef5fdfea31dd3683477561516b1556..e70f4cd1348b8065ee9f0e4448185cfd8a8fb7de 100644
> --- a/Documentation/devicetree/bindings/media/qcom,qcm2290-camss.yaml
> +++ b/Documentation/devicetree/bindings/media/qcom,qcm2290-camss.yaml
> @@ -52,6 +52,14 @@ properties:
>        - const: vfe1
>        - const: vfe1_cphy_rx
>  
> +  "#address-cells":
> +    const: 2
> +
> +  "#size-cells":
> +    const: 2
> +
> +  ranges: true
> +
>    interrupts:
>      maxItems: 8
>  
> @@ -117,6 +125,11 @@ properties:
>              required:
>                - data-lanes
>  
> +patternProperties:
> +  "^isp@[0-9a-f]+$":
> +    $ref: /schemas/media/qcom,qcm2290-camss-ope.yaml
> +    unevaluatedProperties: false

The referenced schema will get applied twice. Instead, just define 
here what compatible must be present. IIRC, the QCom display bindings 
are structured like that if you need an example.

Rob