linux-kernel - Re: [PATCH v2 2/3] arm64: dts: renesas: r8a779a0: Add DSI encoders

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Date:   Tue, 21 Sep 2021 17:52:22 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Kieran Bingham <kieran.bingham@...asonboard.com>
Cc:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/3] arm64: dts: renesas: r8a779a0: Add DSI encoders

Hi Kieran,

On Thu, Sep 2, 2021 at 1:53 AM Kieran Bingham
<kieran.bingham@...asonboard.com> wrote:
> From: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
>
> Provide the two MIPI DSI encoders on the V3U and connect them to the DU
> accordingly.
>
> Signed-off-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>

Thanks for your patch!

> --- a/arch/arm64/boot/dts/renesas/r8a779a0.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a779a0.dtsi
> @@ -1161,12 +1161,72 @@ ports {
>                                 port@0 {
>                                         reg = <0>;
>                                         du_out_dsi0: endpoint {
> +                                               remote-endpoint = <&dsi0_in>;
>                                         };
>                                 };
>
>                                 port@1 {
>                                         reg = <1>;
>                                         du_out_dsi1: endpoint {
> +                                               remote-endpoint = <&dsi1_in>;
> +                                       };
> +                               };
> +                       };
> +               };
> +
> +               dsi0: dsi-encoder@...80000 {
> +                       compatible = "renesas,r8a779a0-dsi-csi2-tx";
> +                       reg = <0 0xfed80000 0 0x10000>;
> +                       power-domains = <&sysc R8A779A0_PD_ALWAYS_ON>;
> +                       clocks = <&cpg CPG_MOD 415>,
> +                                <&cpg CPG_CORE R8A779A0_CLK_DSI>;
> +                       clock-names = "fck", "dsi";

The last posted binding says you need 3 clocks?

No interrupts (yes, they're not in the bindings either)?

The rest looks good to me.

> +                       resets = <&cpg 415>;
> +                       status = "disabled";
> +
> +                       ports {
> +                               #address-cells = <1>;
> +                               #size-cells = <0>;
> +
> +                               port@0 {
> +                                       reg = <0>;
> +                                       dsi0_in: endpoint {
> +                                               remote-endpoint = <&du_out_dsi0>;
> +                                       };
> +                               };
> +
> +                               port@1 {
> +                                       reg = <1>;
> +                                       dsi0_out: endpoint {
> +                                       };
> +                               };
> +                       };
> +               };

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

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