ARM: dts: rockchip: Add Onion Omega4 Evaluation Board

The Onion Omega4 Evaluation Board is based on the RV1103B SoC and has:

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

The details can be found at:
https://documentation.onioniot.com/omega4/getting-started/

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>
Link: https://patch.msgid.link/20260313131058.708361-4-festevam@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm/boot/dts/rockchip/Makefile b/arch/arm/boot/dts/rockchip/Makefile
index 716f5540e43840e59ab3a465ca3c3377d949905f..d0154fd7ff24f994c7438082620d6b8f11036e44 100644 (file)
--- 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-evb.dtb \
        rv1108-elgin-r1.dtb \
        rv1108-evb.dtb \
        rv1109-relfor-saib.dtb \

diff --git a/arch/arm/boot/dts/rockchip/rv1103b-omega4-evb.dts b/arch/arm/boot/dts/rockchip/rv1103b-omega4-evb.dts
new file mode 100644 (file)
index 0000000..c6472f9
--- /dev/null
+++ b/arch/arm/boot/dts/rockchip/rv1103b-omega4-evb.dts
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2022 Rockchip Electronics Co., Ltd.
+ * Copyright (c) 2025 plan44.ch/luz
+ * Copyright (c) 2026 Onion Corporation
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
+#include "rv1103b-omega4.dtsi"
+
+/ {
+       model = "Onion Omega4 Evaluation Board";
+       compatible = "onion,omega4-evb", "onion,omega4", "rockchip,rv1103b";
+
+       aliases {
+               serial0 = &uart0;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+
+       leds {
+               compatible = "gpio-leds";
+
+               led-0   {
+                       color = <LED_COLOR_ID_BLUE>;
+                       default-state = "on";
+                       function = LED_FUNCTION_STATUS;
+                       gpios = <&gpio0 RK_PA2 GPIO_ACTIVE_HIGH>;
+                       label = "sys";
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&led>;
+               };
+       };
+};
+
+&fspi0 {
+       status = "okay";
+};
+
+&pinctrl {
+       leds {
+               led: led {
+                       rockchip,pins = <0 RK_PA2 RK_FUNC_GPIO &pcfg_pull_none>;
+               };
+       };
+};
+
+&sdmmc0 {
+       status = "okay";
+};
+
+&sdmmc1 {
+       status = "okay";
+};
+
+&uart0 {
+       status = "okay";
+};

diff --git a/arch/arm/boot/dts/rockchip/rv1103b-omega4.dtsi b/arch/arm/boot/dts/rockchip/rv1103b-omega4.dtsi
new file mode 100644 (file)
index 0000000..6a8e8e0
--- /dev/null
+++ b/arch/arm/boot/dts/rockchip/rv1103b-omega4.dtsi
@@ -0,0 +1,147 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2022 Rockchip Electronics Co., Ltd.
+ * Copyright (c) 2025 plan44.ch/luz
+ * Copyright (c) 2026 Onion Corporation
+ */
+
+/dts-v1/;
+
+#include "rv1103b.dtsi"
+
+/ {
+       sdio_pwrseq: sdio-pwrseq {
+               compatible = "mmc-pwrseq-simple";
+               pinctrl-names = "default";
+               pinctrl-0 = <&wifi_enable_h>;
+               post-power-on-delay-ms = <300>;
+               reset-gpios = <&gpio2 RK_PB2 GPIO_ACTIVE_LOW>;
+       };
+
+       vcc3v3_sd: vcc3v3-sd {
+               compatible = "regulator-fixed";
+               gpio = <&gpio0 RK_PA4 GPIO_ACTIVE_LOW>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&sdmmc_pwren>;
+               regulator-name = "vcc3v3_sd";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+       };
+
+       vccio_sd: vccio-sd {
+               compatible = "regulator-gpio";
+               gpios = <&gpio0 RK_PA3 GPIO_ACTIVE_HIGH>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&sdmmc_volt>;
+               regulator-name = "vccio_sd";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <3300000>;
+               states = <3300000 1 1800000 0>;
+       };
+};
+
+&uart0 {
+       bootph-all;
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart0m0_xfer>;
+};
+
+&fspi0 {
+       spi_nand: flash@0 {
+               compatible = "spi-nand";
+               reg = <0>;
+               bootph-pre-ram;
+               bootph-some-ram;
+               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 {
+                               reg = <0x00000000 0x00040000>;
+                               label = "env";
+                       };
+
+                       partition@40000 {
+                               reg = <0x00040000 0x00100000>;
+                               label = "idblock";
+                               read-only;
+                       };
+
+                       partition@140000 {
+                               reg = <0x00140000 0x00100000>;
+                               label = "uboot";
+                               read-only;
+                       };
+
+                       partition@240000 {
+                               reg = <0x00240000 0x00800000>;
+                               label = "boot";
+                       };
+
+                       partition@a40000 {
+                               reg = <0x00a40000 0x0f5c0000>;
+                               label = "ubi";
+                       };
+               };
+       };
+};
+
+&sdmmc0 {
+       bus-width = <4>;
+       cap-mmc-highspeed;
+       cap-sd-highspeed;
+       disable-wp;
+       no-sdio;
+       no-mmc;
+       sd-uhs-sdr104;
+       vmmc-supply = <&vcc3v3_sd>;
+       vqmmc-supply = <&vccio_sd>;
+       status = "disabled";
+};
+
+&sdmmc1 {
+       bus-width = <4>;
+       cap-sd-highspeed;
+       cap-sdio-irq;
+       keep-power-in-suspend;
+       mmc-pwrseq = <&sdio_pwrseq>;
+       no-sd;
+       no-mmc;
+       non-removable;
+       pinctrl-names = "default";
+       pinctrl-0 = <&sdmmc1_cmd &sdmmc1_clk &sdmmc1_bus4>;
+       status = "disabled";
+};
+
+&pinctrl {
+       sdio-pwrseq {
+               /omit-if-no-ref/
+               wifi_enable_h: wifi-enable-h {
+                       rockchip,pins = <2 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
+               };
+       };
+
+       sdmmc {
+               /omit-if-no-ref/
+               sdmmc_pwren: sdmmc-pwren {
+                       rockchip,pins = <0 RK_PA4 RK_FUNC_GPIO &pcfg_pull_none>;
+               };
+
+               /omit-if-no-ref/
+               sdmmc_volt: sdmmc-volt {
+                       rockchip,pins = <0 RK_PA3 RK_FUNC_GPIO &pcfg_pull_none>;
+               };
+       };
+
+       wireless-wlan {
+               /omit-if-no-ref/
+               wifi_host_wake_irq: wifi-host-wake-irq {
+                       rockchip,pins = <2 RK_PA6 RK_FUNC_GPIO &pcfg_pull_none>;
+               };
+       };
+};