[PATCH v2] dt-bindings: drm: rcar-du: Document optional reset properties
Laurent Pinchart
laurent.pinchart at ideasonboard.com
Mon Mar 6 16:32:55 UTC 2017
Hi Geert,
Thank you for the patch.
On Monday 06 Mar 2017 17:25:56 Geert Uytterhoeven wrote:
> Document the optional properties for describing module resets, to
> support resetting display channels and LVDS encoders on R-Car Gen2 and
> Gen3.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
This looks good to me.
Acked-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
I think we should try implementing support for reset in the DU driver before
merging this though, it always helps to test the proposed DT bindings.
> ---
> See "[v2,1/4] dt-bindings: clock: renesas: cpg-mssr: Document reset control
> support" (https://patchwork.kernel.org/patch/9536627/) for the format of
> a reset specifier in the Renesas CPG/MSSR case.
>
> E.g. "resets = <&cpg 310>;"
>
> v2:
> - s/phandles/phandle/.
> ---
> Documentation/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
> 1a02f099a0ff0a3a..3db418c827193e82 100644
> --- a/Documentation/devicetree/bindings/display/renesas,du.txt
> +++ b/Documentation/devicetree/bindings/display/renesas,du.txt
> @@ -36,6 +36,16 @@ Required Properties:
> When supplied they must be named "dclkin.x" with "x" being the input
> clock numerical index.
>
> +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.
> + - R8A779[0123456] use one reset for a group of one or more successive
> + channels, and one reset per LVDS encoder (if available). The resets
> + must be named "du.x" with "x" being the numerical index of the lowest
> + channel in the group. The LVDS resets must be named "lvds.x" with
> "x" + being the LVDS encoder numerical index.
> +
> Required nodes:
>
> The connections to the DU output video ports are modeled using the OF graph
--
Regards,
Laurent Pinchart
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