Commit 1accbeca authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Laurent Pinchart

dt-bindings: display: renesas: du: Document optional reset properties

Document the optional properties for describing module resets, to
support resetting display channels on R-Car Gen2 and Gen3.
Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Acked-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Reviewed-by: default avatarKieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
parent c51d58da
......@@ -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>;
......
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