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 >
