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@glider.be Acked-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Acked-by: Rob Herring robh@kernel.org --- 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 c97dfacad28118fa..59be7462a4c8bb8e 100644 --- a/Documentation/devicetree/bindings/display/renesas,du.txt +++ b/Documentation/devicetree/bindings/display/renesas,du.txt @@ -45,6 +45,14 @@ Required Properties: 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 @@ -90,6 +98,8 @@ 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"; vsps = <&vspd0 0>, <&vspd1 0>, <&vspd2 0>, <&vspd0 1>;
ports {