[PATCH 11/11] ARM: dts: rockchip: Add Onion RV1103B Omega4

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <festevam@nabladev.com>

Onion Omega4 board is a board based on the RV1103B SoC that has:

- 256 MB of RAM
- 256 MB of SPI-NAND
- Ethernet
- USB OTG
- Wifi
- SD card
- Camera connector

Add the initial support for this board so that it can fully boot into
Linux with the root file system stored in the SPI NAND.

Signed-off-by: Fabio Estevam <festevam@nabladev.com>
---
 arch/arm/boot/dts/rockchip/Makefile           |  1 +
 arch/arm/boot/dts/rockchip/rv1103b-omega4.dts | 92 +++++++++++++++++++
 2 files changed, 93 insertions(+)
 create mode 100644 arch/arm/boot/dts/rockchip/rv1103b-omega4.dts

diff --git a/arch/arm/boot/dts/rockchip/Makefile b/arch/arm/boot/dts/rockchip/Makefile
index 716f5540e438..d8cd5df138cc 100644
--- a/arch/arm/boot/dts/rockchip/Makefile
+++ b/arch/arm/boot/dts/rockchip/Makefile
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_ROCKCHIP) += \
+	rv1103b-omega4.dtb \
 	rv1108-elgin-r1.dtb \
 	rv1108-evb.dtb \
 	rv1109-relfor-saib.dtb \
diff --git a/arch/arm/boot/dts/rockchip/rv1103b-omega4.dts b/arch/arm/boot/dts/rockchip/rv1103b-omega4.dts
new file mode 100644
index 000000000000..512b063bceb1
--- /dev/null
+++ b/arch/arm/boot/dts/rockchip/rv1103b-omega4.dts
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2022 Rockchip Electronics Co., Ltd.
+ * Copyright (c) 2025 plan44.ch/luz
+ * Copyright (c) 2025 Onion Corporation
+ */
+
+/dts-v1/;
+
+#include "rv1103b.dtsi"
+
+/ {
+	model = "Onion RV1103 Omega4 Board";
+	compatible = "onion,rv1103b-omega4", "rockchip,rv1103b";
+
+	chosen {
+		stdout-path = &uart0;
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x10000000>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-0	{
+			gpios = <&gpio0 RK_PA2 GPIO_ACTIVE_HIGH>;
+			label = "sys";
+			default-state = "on";
+		};
+	};
+};
+
+&fspi0 {
+	bootph-all;
+	status = "okay";
+
+	flash@0 {
+		compatible = "spi-nand";
+		reg = <0>;
+		spi-max-frequency = <75000000>;
+		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <1>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "env";
+				reg = <0x00000000 0x00040000>;
+			};
+
+			partition@40000 {
+				label = "idblock";
+				reg = <0x00040000 0x00100000>;
+				read-only;
+			};
+
+			partition@140000 {
+				label = "uboot";
+				reg = <0x00140000 0x00100000>;
+				read-only;
+			};
+
+			partition@240000 {
+				label = "boot";
+				reg = <0x00240000 0x00800000>;
+			};
+
+			partition@a40000 {
+				label = "ubi";
+				reg = <0x00a40000 0x0f5c0000>;
+			};
+		};
+	};
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0m0_xfer_pins>;
+	bootph-all;
+	status = "okay";
+};
+
+&wdt {
+	bootph-all;
+	status = "okay";
+};
-- 
2.34.1