[PATCH RESEND v2 2/4] dt-bindings: display/msm/gmu: Document RGMU

[Krzysztof Kozlowski]

On Fri, Dec 13, 2024 at 05:01:04PM +0530, Akhil P Oommen wrote:
> RGMU a.k.a Reduced Graphics Management Unit is a small state machine
> with the sole purpose of providing IFPC support. Compared to GMU, it

What is IFPC?

> doesn't manage GPU clock, voltage scaling, bw voting or any other
> functionalities. All it does is detect an idle GPU and toggle the
> GDSC switch. So it doesn't require iommu & opp table.
> 
> Signed-off-by: Akhil P Oommen <quic_akhilpo at quicinc.com>
> ---
>  Documentation/devicetree/bindings/display/msm/gmu.yaml | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/msm/gmu.yaml b/Documentation/devicetree/bindings/display/msm/gmu.yaml
> index b1bd372996d57138a0e80f8d93df09943775fdfa..6889dda7d4be71535dff1a62ca30f980bfc6128d 100644
> --- a/Documentation/devicetree/bindings/display/msm/gmu.yaml
> +++ b/Documentation/devicetree/bindings/display/msm/gmu.yaml
> @@ -27,6 +27,7 @@ properties:
>            - pattern: '^qcom,adreno-gmu-x[1-9][0-9][0-9]\.[0-9]$'
>            - const: qcom,adreno-gmu
>        - const: qcom,adreno-gmu-wrapper
> +      - const: qcom,adreno-rgmu
>  
>    reg:
>      minItems: 1
> @@ -267,12 +268,14 @@ allOf:
>        properties:
>          compatible:
>            contains:
> -            const: qcom,adreno-gmu-wrapper
> +            enum:
> +              - qcom,adreno-gmu-wrapper
> +              - qcom,adreno-rgmu

Does your new rgmu has clocks, interrupts etc? If yes, define them. If
not, disallow them.

Best regards,
Krzysztof