diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2020-02-14 09:26:23 +0100 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2020-05-14 02:10:52 +0300 |
| commit | 1accbeca3e1f123370c50fbc6de60234ee81829c (patch) | |
| tree | 28e6f99fdab7c427e6a233ad59f42098f01532f7 /Documentation/devicetree/bindings/display/renesas,du.txt | |
| parent | c51d58da9daf865197f5a0ab5d758b2738133137 (diff) | |
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: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Diffstat (limited to 'Documentation/devicetree/bindings/display/renesas,du.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/display/renesas,du.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/display/renesas,du.txt b/Documentation/devicetree/bindings/display/renesas,du.txt index eb4ae41fe41f..51cd4d162770 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>; |