Hi Jacopo,
On Sun, Aug 25, 2019 at 3:50 PM Jacopo Mondi <jacopo+renesas@xxxxxxxxxx> wrote:
> Add device tree bindings documentation for the Renesas R-Car Display
> Unit Color Management Module.
>
> CMM is the image enhancement module available on each R-Car DU video
> channel on R-Car Gen2 and Gen3 SoCs (V3H and V3M excluded).
>
> Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
Thanks for your patch!
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/renesas,cmm.txt
> @@ -0,0 +1,33 @@
> +* Renesas R-Car Color Management Module (CMM)
> +
> +Renesas R-Car image enhancement module connected to R-Car DU video channels.
> +
> +Required properties:
> + - compatible: shall be one or more of the following:
> + - "renesas,cmm-r8a7795": for R8A7795 (R-Car H3) compatible CMM.
> + - "renesas,cmm-r8a7796": for R8A7796 (R-Car M3-W) compatible CMM.
> + - "renesas,cmm-r8a77965": for R8A77965 (R-Car M3-N) compatible CMM.
> + - "renesas,cmm-r8a77990": for R8A77990 (R-Car E3) compatible CMM.
> + - "renesas,cmm-r8a77995": for R8A77995 (R-Car D3) compatible CMM.
Please use "renesas,<socype->-cmm" instead of "renesas,cmm-<soctype>".
> + - "renesas,rcar-gen3-cmm": for a generic R-Car Gen3 compatible CMM.
> + - "renesas,rcar-gen2-cmm": for a generic R-Car Gen2 compatible CMM.
> +
> + When the generic compatible string is specified, the SoC-specific
> + version corresponding to the platform should be listed first.
> +
> + - reg: the address base and length of the memory area where CMM control
> + registers are mapped to.
> +
> + - clocks: phandle and clock-specifier pair to the CMM functional clock
> + supplier.
Thinking about yaml validation:
power-domains?
resets?
> +Example:
> +--------
> +
> + cmm0: cmm@fea40000 {
> + compatible = "renesas,cmm-r8a7796";
> + reg = <0 0xfea40000 0 0x1000>;
> + power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
> + clocks = <&cpg CPG_MOD 711>;
> + resets = <&cpg 711>;
> + };
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
