Hi, On Wed, 2025-02-05 at 17:20 +0530, Harikrishna Shenoy wrote: > From: Rahul T R <r-ravikumar@xxxxxx> > > The mhdp bridge can work without its HPD pin hooked up to the > connector, > but the current bridge driver throws an error when hpd line is not > connected to the connector. For such cases, we need an indication for > no-hpd, using which we can bypass the hpd detection and instead use > the > auxiliary channels connected to the DP connector to confirm the > connection. > So add no-hpd property to the bindings, to disable hpd when not > connected or unusable due to DP0-HPD not connected to correct HPD > pin on SOC like in case of J721S2. out of curiosity. This series doesn't have anything to do with the other DP HPD pin (AA24 MCASP1_ACLKX.DP0_HPD in case of J721S2) still being mandatory to mux? > Signed-off-by: Rahul T R <r-ravikumar@xxxxxx> > Signed-off-by: Jayesh Choudhary <j-choudhary@xxxxxx> > --- > .../devicetree/bindings/display/bridge/cdns,mhdp8546.yaml | 6 > ++++++ > 1 file changed, 6 insertions(+) > > diff --git > a/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.yaml > b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.yaml > index c2b369456e4e..3a6c6d837593 100644 > --- > a/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.yaml > +++ > b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.yaml > @@ -57,6 +57,12 @@ properties: > interrupts: > maxItems: 1 > > + cdns,no-hpd: > + type: boolean > + description: > + Set if the HPD line on the bridge isn't hooked up to anything > or is > + otherwise unusable. > + > ports: > $ref: /schemas/graph.yaml#/properties/ports >
