Re: [PATCH 3/4] arm64: dts: renesas: r8a7795: Add DU device to DT

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Hi Laurent,

On Sun, Apr 24, 2016 at 2:34 AM, Laurent Pinchart
<laurent.pinchart+renesas@xxxxxxxxxxxxxxxx> wrote:
> Add the DU device to r8a7795.dtsi in a disabled state.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/renesas/r8a7795.dtsi | 46 ++++++++++++++++++++++++++++++++
>  1 file changed, 46 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> index ad25330e7827..b64366c541ed 100644
> --- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> @@ -1379,5 +1379,51 @@
>                         clocks = <&cpg CPG_MOD 600>;
>                         power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
>                 };
> +
> +               du: display@feb00000 {
> +                       compatible = "renesas,du-r8a7795";
> +                       reg = <0 0xfeb00000 0 0x80000>,
> +                             <0 0xfeb90000 0 0x14>;
> +                       reg-names = "du", "lvds.0";
> +                       interrupts = <0 256 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <0 268 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <0 269 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <0 270 IRQ_TYPE_LEVEL_HIGH>;

GIC_SPI (4x)

> +                       clocks = <&cpg CPG_MOD 724>,
> +                                <&cpg CPG_MOD 723>,
> +                                <&cpg CPG_MOD 722>,
> +                                <&cpg CPG_MOD 721>,
> +                                <&cpg CPG_MOD 727>;
> +                       clock-names = "du.0", "du.1", "du.2", "du.3", "lvds.0";

BTW, now you have your "always-on" PM Domain, it would be nice to revamp the
DU bindings to have one device node per DU instance, so there can be a
one-to-one mapping of device nodes, DU instances, and DU module clocks...

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



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