[PATCH v4 4/4] arm64: dts: rockchip: Add Radxa e20c board

[Yao Zi <ziyao@disroot.org>]

Add board-level device tree for Radxa e20c board[1]. This basic
implementation supports boot into a kernel with only UART console.
Other features will be added later.

[1]: https://docs.radxa.com/en/e/e20c

Signed-off-by: Yao Zi <ziyao@disroot.org>
---
 arch/arm64/boot/dts/rockchip/Makefile         |  1 +
 .../boot/dts/rockchip/rk3528-radxa-e20c.dts   | 22 +++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index fda1b980eb4b..ecdd767d0323 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -74,6 +74,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rockpro64.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-sapphire.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-sapphire-excavator.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399pro-rock-pi-n10.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3528-radxa-e20c.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-anbernic-rg-arc-d.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-anbernic-rg-arc-s.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-anbernic-rg353p.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
new file mode 100644
index 000000000000..d2cdb63d4a9d
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2020 Rockchip Electronics Co., Ltd
+ * Copyright (c) 2024 Radxa Limited
+ * Copyright (c) 2024 Yao Zi <ziyao@disroot.org>
+ */
+
+/dts-v1/;
+#include "rk3528.dtsi"
+
+/ {
+	model = "Radxa E20C";
+	compatible = "radxa,e20c", "rockchip,rk3528";
+
+	chosen {
+		stdout-path = "serial0:1500000n8";
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
-- 
2.46.0