[PATCH 3/5] arm64: dts: rockchip: add support for HAIKOU-LVDS-9904379 adapter for PX30 Ringneck

[Quentin Schulz]

From: Quentin Schulz <quentin.schulz at cherry.de>

The HAIKOU-LVDS-9904379 adapter is an adapter for PX30 Ringneck with the
Haikou carrierboard. It is to be inserted in the fake PCIe slot labelled
Video Connector.

This adapter expects an Admatec 9904379 1024x600 LVDS display with
backlight and touchscreen. An EEPROM is also found on the adapter.

This adds support for this adapter on PX30 Ringneck when inserted in
Haikou carrierboard.

Signed-off-by: Quentin Schulz <quentin.schulz at cherry.de>
---
 arch/arm64/boot/dts/rockchip/Makefile              |   5 +
 .../px30-ringneck-haikou-lvds-9904379.dtso         | 130 +++++++++++++++++++++
 2 files changed, 135 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index e4d9c48b95bba204f50697480d06e9a4071e56d3..b40b82bd07223f542c17704e7844f002bb31e1c5 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -5,6 +5,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += px30-engicam-px30-core-ctouch2-of10.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += px30-engicam-px30-core-edimm2.2.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += px30-firefly-jd4-core-mb.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += px30-ringneck-haikou.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += px30-ringneck-haikou-lvds-9904379.dtbo
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-bpi-p2-pro.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-evb.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-roc-cc.dtb
@@ -191,6 +192,10 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588s-rock-5c.dtb
 # result of the application of <overlay-1>.dtbo and other listed overlays on top
 # of <base>.dtb.
 
+dtb-$(CONFIG_ARCH_ROCKCHIP) += px30-ringneck-haikou-haikou-lvds-9904379.dtb
+px30-ringneck-haikou-haikou-lvds-9904379-dtbs := px30-ringneck-haikou.dtb \
+	px30-ringneck-haikou-lvds-9904379.dtbo
+
 dtb-$(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/px30-ringneck-haikou-lvds-9904379.dtso b/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou-lvds-9904379.dtso
new file mode 100644
index 0000000000000000000000000000000000000000..3fc088a5636a24b40a8536b28a210fce79f6d333
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou-lvds-9904379.dtso
@@ -0,0 +1,130 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2025 Cherry Embedded Solutions GmbH
+ *
+ * HAIKOU-LVDS-9904379 adapter for PX30 Ringneck and Haikou carrierboard.
+ *
+ * This adapter needs to be plugged in the fake PCIe connector called Video
+ * Connector on Haikou carrierboard.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+
+&{/} {
+	backlight_lvds: backlight-lvds {
+		compatible = "pwm-backlight";
+		brightness-levels = <0 255>;
+		default-brightness-level = <255>;
+		num-interpolated-steps = <255>;
+		power-supply = <&vcc3v3_baseboard>;
+		pwms = <&pwm0 0 25000 0>;
+	};
+
+	panel {
+		compatible = "admatec,9904379", "panel-lvds";
+		backlight = <&backlight_lvds>;
+		data-mapping = "vesa-24";
+		height-mm = <126>;
+		power-supply = <&vcc3v3_baseboard>;
+		width-mm = <224>;
+
+		panel-timing {
+			clock-frequency = <49500000>;
+			hactive = <1024>;
+			hback-porch = <90>;
+			hfront-porch = <90>;
+			hsync-len = <90>;
+			vactive = <600>;
+			vback-porch = <10>;
+			vfront-porch = <10>;
+			vsync-len = <10>;
+		};
+
+		port {
+			panel_in_lvds: endpoint {
+				remote-endpoint = <&lvds_out_panel>;
+			};
+		};
+	};
+};
+
+&display_subsystem {
+	status = "okay";
+};
+
+&dsi_dphy {
+	status = "okay";
+};
+
+&i2c1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	/* EEPROM and GT928 are limited to 400KHz */
+	clock-frequency = <400000>;
+
+	touchscreen at 14 {
+		compatible = "goodix,gt928";
+		reg = <0x14>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PA0 IRQ_TYPE_LEVEL_LOW>;
+		irq-gpios = <&gpio0 RK_PA0 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&gpio0 RK_PA2 GPIO_ACTIVE_HIGH>;
+		pinctrl-0 = <&touch_int &touch_rst>;
+		pinctrl-names = "default";
+		touchscreen-inverted-x;
+		touchscreen-inverted-y;
+		AVDD28-supply = <&vcc3v3_baseboard>;
+		VDDIO-supply = <&vcc3v3_baseboard>;
+	};
+
+	eeprom at 54 {
+		reg = <0x54>;
+		compatible = "st,24c04", "atmel,24c04";
+		pagesize = <16>;
+		size = <512>;
+		vcc-supply = <&vcc3v3_baseboard>;
+	};
+};
+
+&lvds {
+	status = "okay";
+};
+
+&lvds_out {
+	lvds_out_panel: endpoint {
+		remote-endpoint = <&panel_in_lvds>;
+	};
+};
+
+&pinctrl {
+	touch {
+		touch_int: touch-int {
+			rockchip,pins = <0 RK_PA0 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		touch_rst: touch-rst {
+			rockchip,pins = <0 RK_PA2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+};
+
+&vopb {
+	status = "okay";
+};
+
+&vopb_mmu {
+	status = "okay";
+};
+
+&vopl {
+	status = "okay";
+};
+
+&vopl_mmu {
+	status = "okay";
+};

-- 
2.48.1