Re: [PATCH] dt-bindings: ufs: Add msi-parent for UFS MCQ

[Rob Herring]

On Wed, Nov 01, 2023 at 06:48:13PM +0800, Ziqi Chen wrote:
> The Message Signaled Interrupts (MSI) has been introduced
> to UFS driver since the MCQ be enabled.

Not really relevant when a driver supported MSI, but the when the h/w 
did. Has UFS always supported MSI? It was added in some version of the 
spec?

> Hence in UFS DT
> node we need to give the msi-parent property that point
> to the hardware entity which serves as the MSI controller
> for this UFS controller.
> 
> Signed-off-by: Ziqi Chen <quic_ziqichen@xxxxxxxxxxx>
> ---
>  Documentation/devicetree/bindings/ufs/ufs-common.yaml | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/ufs/ufs-common.yaml b/Documentation/devicetree/bindings/ufs/ufs-common.yaml
> index bbaee4f5..42309bb 100644
> --- a/Documentation/devicetree/bindings/ufs/ufs-common.yaml
> +++ b/Documentation/devicetree/bindings/ufs/ufs-common.yaml
> @@ -73,6 +73,8 @@ properties:
>      description:
>        Specifies max. load that can be drawn from VCCQ2 supply.
>  
> +  msi-parent: true
> +
>  dependencies:
>    freq-table-hz: [ clocks ]
>  
> -- 
> 2.7.4
>