arm64: dts: rockchip: add overlay for RockPro64 screen

The Pine64 touch panel is a panel consisting of the Feiyang fy07024di26a30d
panel with a Goodix gt911 touch screen. Add a device tree overlay to
allow the display to be easily used on the device.

This was previously included in the main device tree but left disabled
by default which still required rebuilding the DT to use the device, now
overlays can go upstream the overlay is the best way to handle the
add on devices.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
[added the missing v2 to
	dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rockpro64-v2-screen.dtb
	                                                ^^
	rk3399-rockpro64-v2-screen-dtbs := rk3399-rockpro64-v2.dtb \
		rk3399-rockpro64-screen.dtbo
 dropped address-cells/size-cells from panel node to fix warning about
 rk3399-rockpro64-screen.dtso:69.22-84.4: Warning (avoid_unnecessary_addr_size)
 /fragment@2/__overlay__/panel@0: unnecessary #address-cells/#size-cells
 without "ranges", "dma-ranges" or child "reg" property]
Link: https://lore.kernel.org/r/20250518215944.178582-2-pbrobinson@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

2 files changed, 95 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index 5b831322635d..bb6c5a2d3383 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -85,6 +85,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4c.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock960.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rockpro64-v2.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rockpro64.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rockpro64-screen.dtbo
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-sapphire.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-sapphire-excavator.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399pro-rock-pi-n10.dtb
@@ -223,6 +224,14 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-puma-haikou-haikou-video-demo.dtb
 rk3399-puma-haikou-haikou-video-demo-dtbs := rk3399-puma-haikou.dtb \
 	rk3399-puma-haikou-video-demo.dtbo
 
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rockpro64-screen.dtb
+rk3399-rockpro64-screen-dtbs := rk3399-rockpro64.dtb \
+	rk3399-rockpro64-screen.dtbo
+
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rockpro64-v2-screen.dtb
+rk3399-rockpro64-v2-screen-dtbs := rk3399-rockpro64-v2.dtb \
+	rk3399-rockpro64-screen.dtbo
+
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-wolfvision-pf5-vz-2-uhd.dtb
 rk3568-wolfvision-pf5-vz-2-uhd-dtbs := rk3568-wolfvision-pf5.dtb \
 	rk3568-wolfvision-pf5-display-vz.dtbo \
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64-screen.dtso b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64-screen.dtso
new file mode 100644
index 000000000000..b1f4ab22b99c
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64-screen.dtso
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2017 Fuzhou Rockchip Electronics Co., Ltd.
+ * Copyright (c) 2025 Peter Robinson <pbrobinson@gmail.com>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+
+&{/} {
+	avdd: regulator-avdd {
+		compatible = "regulator-fixed";
+		regulator-name = "avdd";
+		regulator-min-microvolt = <11000000>;
+		regulator-max-microvolt = <11000000>;
+		vin-supply = <&vcc3v3_s0>;
+	};
+
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		brightness-levels = <0 4 8 16 32 64 128 255>;
+		default-brightness-level = <5>;
+		pwms = <&pwm0 0 1000000 0>;
+		status = "okay";
+	};
+};
+
+&i2c4 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	touch: touchscreen@5d {
+		compatible = "goodix,gt911";
+		reg = <0x5d>;
+		interrupt-parent = <&gpio4>;
+		interrupts = <RK_PD5 IRQ_TYPE_EDGE_FALLING>;
+		AVDD28-supply = <&vcc3v0_touch>;
+		VDDIO-supply = <&vcc3v0_touch>;
+		irq-gpios = <&gpio4 RK_PD5 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&gpio4 RK_PD6 GPIO_ACTIVE_HIGH>;
+		status = "okay";
+	};
+};
+
+&mipi_dsi {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	clock-master;
+	status = "okay";
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		mipi_out: port@1 {
+			reg = <1>;
+
+			mipi_out_panel: endpoint {
+				remote-endpoint = <&mipi_in_panel>;
+			};
+		};
+	};
+
+	mipi_panel: panel@0 {
+		compatible = "feiyang,fy07024di26a30d";
+		reg = <0>;
+		avdd-supply = <&avdd>;
+		backlight = <&backlight>;
+		dvdd-supply = <&vcc3v3_s0>;
+
+		port {
+			mipi_in_panel: endpoint {
+				remote-endpoint = <&mipi_out_panel>;
+			};
+		};
+	};
+};
+
+&pwm0 {
+	status = "okay";
+};