linux-kernel - Re: [PATCH 6/6] arm64: dts: allwinner: a64: enable ANX6345 bridge on Teres-I

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Message-ID: <CA+E=qVdh-=C5zOYWYj95jLN51EaXFS6B+CQ101-f64q5QmgN3g@mail.gmail.com>
Date:   Thu, 23 May 2019 07:48:03 -0700
From:   Vasily Khoruzhick <anarsoul@...il.com>
To:     Torsten Duwe <duwe@....de>
Cc:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Thierry Reding <thierry.reding@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Icenowy Zheng <icenowy@...c.io>,
        Sean Paul <seanpaul@...omium.org>,
        Harald Geyer <harald@...ib.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        devicetree <devicetree@...r.kernel.org>,
        arm-linux <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 6/6] arm64: dts: allwinner: a64: enable ANX6345 bridge on Teres-I

On Wed, May 22, 2019 at 11:54 PM Torsten Duwe <duwe@....de> wrote:
>
> From: Icenowy Zheng <icenowy@...c.io>
>
> Teres-I has an anx6345 bridge connected to the RGB666 LCD output, and
> the I2C controlling signals are connected to I2C0 bus. eDP output goes
> to an Innolux N116BGE panel.
>
> Enable it in the device tree.
>
> Signed-off-by: Icenowy Zheng <icenowy@...c.io>
> Signed-off-by: Torsten Duwe <duwe@...e.de>
> ---
>  arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts |   65 +++++++++++++++++--
>  1 file changed, 61 insertions(+), 4 deletions(-)
>
> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts
> @@ -65,6 +65,21 @@
>                 };
>         };
>
> +       panel: panel {
> +               compatible ="innolux,n116bge", "simple-panel";

IIRC Rob wanted it to be edp-connector, not simple-panel. Also you
need to introduce edp-connector binding.

> +               status = "okay";
> +               power-supply = <&reg_dcdc1>;
> +               backlight = <&backlight>;
> +
> +               ports {
> +                       panel_in: port {
> +                               panel_in_edp: endpoint {
> +                                       remote-endpoint = <&anx6345_out>;
> +                               };
> +                       };
> +               };
> +       };
> +
>         reg_usb1_vbus: usb1-vbus {
>                 compatible = "regulator-fixed";
>                 regulator-name = "usb1-vbus";
> @@ -81,20 +96,48 @@
>         };
>  };
>
> +&de {
> +       status = "okay";
> +};
> +
>  &ehci1 {
>         status = "okay";
>  };
>
>
> -/* The ANX6345 eDP-bridge is on i2c0. There is no linux (mainline)
> - * driver for this chip at the moment, the bootloader initializes it.
> - * However it can be accessed with the i2c-dev driver from user space.
> - */
>  &i2c0 {
>         clock-frequency = <100000>;
>         pinctrl-names = "default";
>         pinctrl-0 = <&i2c0_pins>;
>         status = "okay";
> +
> +       anx6345: anx6345@38 {
> +               compatible = "analogix,anx6345";
> +               reg = <0x38>;
> +               reset-gpios = <&pio 3 24 GPIO_ACTIVE_LOW>; /* PD24 */
> +               dvdd25-supply = <&reg_dldo2>;
> +               dvdd12-supply = <&reg_dldo3>;
> +
> +               ports {
> +                       #address-cells = <1>;
> +                       #size-cells = <0>;
> +
> +                       port@0 {
> +                               anx6345_in: endpoint {
> +                                       remote-endpoint = <&tcon0_out_anx6345>;
> +                               };
> +                       };
> +                       port@1 {
> +                               anx6345_out: endpoint {
> +                                       remote-endpoint = <&panel_in_edp>;
> +                               };
> +                       };
> +               };
> +       };
> +};
> +
> +&mixer0 {
> +       status = "okay";
>  };
>
>  &mmc0 {
> @@ -279,6 +322,20 @@
>         vcc-hdmi-supply = <&reg_dldo1>;
>  };
>
> +&tcon0 {
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&lcd_rgb666_pins>;
> +
> +       status = "okay";
> +};
> +
> +&tcon0_out {
> +       tcon0_out_anx6345: endpoint@0 {
> +               reg = <0>;
> +               remote-endpoint = <&anx6345_in>;
> +       };
> +};
> +
>  &uart0 {
>         pinctrl-names = "default";
>         pinctrl-0 = <&uart0_pb_pins>;