Hi,

On Wed, Mar 20, 2024 at 06:37:31PM +0100, Emmanuel Gil Peyrot wrote:
> This encoder-only device is present four times on this SoC, and should
> support everything the rk3568 vepu supports (so JPEG, H.264 and VP8
> encoding).
> 
> Signed-off-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
> ---
>  .../devicetree/bindings/media/rockchip,rk3568-vepu.yaml          | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/media/rockchip,rk3568-vepu.yaml b/Documentation/devicetree/bindings/media/rockchip,rk3568-vepu.yaml
> index 9d90d8d0565a..947ad699cc5e 100644
> --- a/Documentation/devicetree/bindings/media/rockchip,rk3568-vepu.yaml
> +++ b/Documentation/devicetree/bindings/media/rockchip,rk3568-vepu.yaml
> @@ -17,6 +17,7 @@ properties:
>    compatible:
>      enum:
>        - rockchip,rk3568-vepu
> +      - rockchip,rk3588-vepu121

Looks like they are fully compatible. In that case it's better to
use a fallback compatible (i.e. like the iommu binding), which does
not need any drivers changes. So binding should be like this:

compatible:
  oneOf:
    - const: rockchip,rk3568-vepu
    - items:
      - enum:
          - rockchip,rk3588-vepu121
      - const: rockchip,rk3568-vepu

Then in DT (i.e. the following patch) you use

compatible = "rockchip,rk3588-vepu121", "rockchip,rk3568-vepu";

And patch 4/4 can be dropped.

Greetings,

-- Sebastian