arm64: dts: renesas: white-hawk-cpu: Add DP output support

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@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20221201095631.89448-6-tomi.valkeinen+renesas@ideasonboard.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/arch/arm64/boot/dts/renesas/r8a779g0-white-hawk-cpu.dtsi b/arch/arm64/boot/dts/renesas/r8a779g0-white-hawk-cpu.dtsi
index c10740a..bb4a527 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a779g0-white-hawk-cpu.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779g0-white-hawk-cpu.dtsi
@@ -97,6 +97,27 @@
                reg = <0x6 0x00000000 0x1 0x00000000>;
        };
 
+       mini-dp-con {
+               compatible = "dp-connector";
+               label = "CN5";
+               type = "mini";
+
+               port {
+                       mini_dp_con_in: endpoint {
+                               remote-endpoint = <&sn65dsi86_out>;
+                       };
+               };
+       };
+
+       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 +135,12 @@
                regulator-boot-on;
                regulator-always-on;
        };
+
+       sn65dsi86_refclk: clk-x6 {
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <38400000>;
+       };
 };
 
 &avb0 {
@@ -134,6 +161,23 @@
        };
 };
 
+&dsi0 {
+       status = "okay";
+
+       ports {
+               port@1 {
+                       dsi0_out: endpoint {
+                               remote-endpoint = <&sn65dsi86_in>;
+                               data-lanes = <1 2 3 4>;
+                       };
+               };
+       };
+};
+
+&du {
+       status = "okay";
+};
+
 &extal_clk {
        clock-frequency = <16666666>;
 };
@@ -172,6 +216,51 @@
        };
 };
 
+&i2c1 {
+       pinctrl-0 = <&i2c1_pins>;
+       pinctrl-names = "default";
+
+       status = "okay";
+       clock-frequency = <400000>;
+
+       bridge@2c {
+               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>;
@@ -221,6 +310,11 @@
                function = "i2c0";
        };
 
+       i2c1_pins: i2c1 {
+               groups = "i2c1";
+               function = "i2c1";
+       };
+
        keys_pins: keys {
                pins = "GP_5_0", "GP_5_1", "GP_5_2";
                bias-pull-up;