From 108d9f11ea928a80976db80b5ff723ce8170ebe1 Mon Sep 17 00:00:00 2001
From: Jonas Karlman <jonas@kwiboo.se>
Date: Fri, 1 Aug 2025 20:32:39 +0000
Subject: board: rockchip: Add minimal generic RK3576 board

Add a minimal generic RK3576 board that only have eMMC, SDMMC and USB
OTG enabled. This defconfig can be used to boot from eMMC or SD-card on
most RK3576 boards that follow reference board design.

eMMC and SD-card boot tested on:
- ArmSoM CM5
- ArmSoM Sige5
- FriendlyElec NanoPi M5
- Luckfox Omni3576
- Toybrick TB-RK3576D

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
---
 arch/arm/dts/rk3576-generic-u-boot.dtsi   |  3 ++
 arch/arm/dts/rk3576-generic.dts           | 63 +++++++++++++++++++++++++++++++
 arch/arm/mach-rockchip/rk3576/MAINTAINERS |  5 +++
 3 files changed, 71 insertions(+)
 create mode 100644 arch/arm/dts/rk3576-generic-u-boot.dtsi
 create mode 100644 arch/arm/dts/rk3576-generic.dts
 create mode 100644 arch/arm/mach-rockchip/rk3576/MAINTAINERS

(limited to 'arch')

diff --git a/arch/arm/dts/rk3576-generic-u-boot.dtsi b/arch/arm/dts/rk3576-generic-u-boot.dtsi
new file mode 100644
index 00000000000..632fabb6af5
--- /dev/null
+++ b/arch/arm/dts/rk3576-generic-u-boot.dtsi
@@ -0,0 +1,3 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include "rk3576-u-boot.dtsi"
diff --git a/arch/arm/dts/rk3576-generic.dts b/arch/arm/dts/rk3576-generic.dts
new file mode 100644
index 00000000000..123be5378d9
--- /dev/null
+++ b/arch/arm/dts/rk3576-generic.dts
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Minimal generic DT for RK3576 with eMMC, SD-card and USB OTG enabled
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include "rk3576.dtsi"
+
+/ {
+	model = "Generic RK3576";
+	compatible = "rockchip,rk3576";
+
+	aliases {
+		mmc0 = &sdhci;
+		mmc1 = &sdmmc;
+	};
+
+	chosen {
+		stdout-path = "serial0:1500000n8";
+	};
+};
+
+&sdhci {
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	mmc-hs200-1_8v;
+	no-sd;
+	no-sdio;
+	non-removable;
+	status = "okay";
+};
+
+&sdmmc {
+	bus-width = <4>;
+	cap-sd-highspeed;
+	disable-wp;
+	no-mmc;
+	no-sdio;
+	status = "okay";
+};
+
+&u2phy0 {
+	status = "okay";
+};
+
+&u2phy0_otg {
+	status = "okay";
+};
+
+&uart0 {
+	pinctrl-0 = <&uart0m0_xfer>;
+	status = "okay";
+};
+
+&usb_drd0_dwc3 {
+	dr_mode = "peripheral";
+	maximum-speed = "high-speed";
+	phys = <&u2phy0_otg>;
+	phy-names = "usb2-phy";
+	status = "okay";
+};
diff --git a/arch/arm/mach-rockchip/rk3576/MAINTAINERS b/arch/arm/mach-rockchip/rk3576/MAINTAINERS
new file mode 100644
index 00000000000..b5190c81846
--- /dev/null
+++ b/arch/arm/mach-rockchip/rk3576/MAINTAINERS
@@ -0,0 +1,5 @@
+GENERIC-RK3576
+M:	Jonas Karlman <jonas@kwiboo.se>
+S:	Maintained
+F:	arch/arm/dts/rk3576-generic*
+F:	configs/generic-rk3576_defconfig
-- 
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