Hi Geert, On 14/02/2020 08:26, Geert Uytterhoeven wrote: > Document the optional properties for describing module resets, to > support resetting display channels on R-Car Gen2 and Gen3. > > Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> > Acked-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> > Acked-by: Rob Herring <robh@xxxxxxxxxx> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx> > --- > Who's taking this kind of patches? > V1 was submmitted in March 2017. Hrm ... presumably through the DRM subsystem trees? Or just for Laurent to pick up ... -- KB > > v5: > - Rebase on top of renesas,cmms and renesas,vsps patches, > > v4: > - Use "All but R8A7779" instead of "R8A779[0123456]", to reduce future > churn, > > v3: > - Add Acked-by, > - Drop LVDS resets, as LVDS is now covered by a separate binding, > - Update the example. > > v2: > - s/phandles/phandle/. > --- > .../devicetree/bindings/display/renesas,du.txt | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/renesas,du.txt b/Documentation/devicetree/bindings/display/renesas,du.txt > index eb4ae41fe41f83c7..51cd4d1627703a15 100644 > --- a/Documentation/devicetree/bindings/display/renesas,du.txt > +++ b/Documentation/devicetree/bindings/display/renesas,du.txt > @@ -50,6 +50,14 @@ Required Properties: > VSP instance that serves the DU channel, and the channel index identifies > the LIF instance in that VSP. > > +Optional properties: > + - resets: A list of phandle + reset-specifier pairs, one for each entry in > + the reset-names property. > + - reset-names: Names of the resets. This property is model-dependent. > + - All but R8A7779 use one reset for a group of one or more successive > + channels. The resets must be named "du.x" with "x" being the numerical > + index of the lowest channel in the group. > + > Required nodes: > > The connections to the DU output video ports are modeled using the OF graph > @@ -96,6 +104,8 @@ Example: R8A7795 (R-Car H3) ES2.0 DU > <&cpg CPG_MOD 722>, > <&cpg CPG_MOD 721>; > clock-names = "du.0", "du.1", "du.2", "du.3"; > + resets = <&cpg 724>, <&cpg 722>; > + reset-names = "du.0", "du.2"; > renesas,cmms = <&cmm0>, <&cmm1>, <&cmm2>, <&cmm3>; > renesas,vsps = <&vspd0 0>, <&vspd1 0>, <&vspd2 0>, <&vspd0 1>; > >
