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SubjectRe: [PATCH] dt-bindings: ufs: Add msi-parent for UFS MCQ
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@quicinc.com>
> ---
> 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
>

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