linux-kernel - Re: [PATCH v2 5/7] arm64: dts: renesas: white-hawk-cpu: Add DP output support

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Message-ID: <CAMuHMdVy+cfDLsCWA0z-xF+Rr0g4hLSROry-m+=eZSBEsuLa_w@mail.gmail.com>
Date:   Thu, 1 Dec 2022 11:03:04 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
Cc:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Magnus Damm <magnus.damm@...il.com>,
        dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <robert.foss@...aro.org>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>
Subject: Re: [PATCH v2 5/7] arm64: dts: renesas: white-hawk-cpu: Add DP output support

Hi Tomi,

On Wed, Nov 23, 2022 at 8:00 AM Tomi Valkeinen
<tomi.valkeinen+renesas@...asonboard.com> wrote:
> Add DT nodes needed for the mini DP connector. The DP is driven by
> sn65dsi86, which in turn gets the pixel data from the SoC via DSI.
>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

Thanks for your patch!

Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
i.e. will queue in renesas-devel for v6.3, with the mini-dp-con node
moved up.

> --- a/arch/arm64/boot/dts/renesas/r8a779g0-white-hawk-cpu.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a779g0-white-hawk-cpu.dtsi
> @@ -97,6 +97,15 @@ memory@...000000 {
>                 reg = <0x6 0x00000000 0x1 0x00000000>;
>         };
>
> +       reg_1p2v: regulator-1p2v {
> +               compatible = "regulator-fixed";
> +               regulator-name = "fixed-1.2V";
> +               regulator-min-microvolt = <1200000>;
> +               regulator-max-microvolt = <1200000>;
> +               regulator-boot-on;
> +               regulator-always-on;
> +       };
> +
>         reg_1p8v: regulator-1p8v {
>                 compatible = "regulator-fixed";
>                 regulator-name = "fixed-1.8V";
> @@ -114,6 +123,24 @@ reg_3p3v: regulator-3p3v {
>                 regulator-boot-on;
>                 regulator-always-on;
>         };
> +
> +       mini-dp-con {
> +               compatible = "dp-connector";
> +               label = "CN5";
> +               type = "mini";
> +
> +               port {
> +                       mini_dp_con_in: endpoint {
> +                               remote-endpoint = <&sn65dsi86_out>;
> +                       };
> +               };
> +       };

Moving up while applying to preserve sort order...

> +
> +       sn65dsi86_refclk: clk-x6 {
> +               compatible = "fixed-clock";
> +               #clock-cells = <0>;
> +               clock-frequency = <38400000>;
> +       };
>  };
>
>  &avb0 {

> @@ -172,6 +216,51 @@ eeprom@50 {
>         };
>  };
>
> +&i2c1 {
> +       pinctrl-0 = <&i2c1_pins>;
> +       pinctrl-names = "default";
> +
> +       status = "okay";
> +       clock-frequency = <400000>;
> +
> +       bridge@2c {

Ideally, this needs pinctrl for the intc_ex irq0 pin.
Unfortunately[1] is still in limbo as the naming of the alternate pins
is inconsistent.

> +               compatible = "ti,sn65dsi86";
> +               reg = <0x2c>;
> +
> +               clocks = <&sn65dsi86_refclk>;
> +               clock-names = "refclk";
> +
> +               interrupt-parent = <&intc_ex>;
> +               interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
> +
> +               enable-gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>;
> +
> +               vccio-supply = <&reg_1p8v>;
> +               vpll-supply = <&reg_1p8v>;
> +               vcca-supply = <&reg_1p2v>;
> +               vcc-supply = <&reg_1p2v>;
> +
> +               ports {
> +                       #address-cells = <1>;
> +                       #size-cells = <0>;
> +
> +                       port@0 {
> +                               reg = <0>;
> +                               sn65dsi86_in: endpoint {
> +                                       remote-endpoint = <&dsi0_out>;
> +                               };
> +                       };
> +
> +                       port@1 {
> +                               reg = <1>;
> +                               sn65dsi86_out: endpoint {
> +                                       remote-endpoint = <&mini_dp_con_in>;
> +                               };
> +                       };
> +               };
> +       };
> +};
> +
>  &mmc0 {
>         pinctrl-0 = <&mmc_pins>;
>         pinctrl-1 = <&mmc_pins>;

[1] "[PATCH/RFC] pinctrl: renesas: r8a779g0: Add INTC-EX pins, groups,
and function"
    https://lore.kernel.org/all/28fe05d41bea5a03ea6c8434f5a4fb6c80b48867.1664368425.git.geert+renesas@glider.be

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