Add an initial devicetree for the Radxa NIO 12L SBC, powered by the
MT8395 Genio 1200 SoC.

This achieves a console boot.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 arch/arm64/boot/dts/mediatek/Makefile         |   1 +
 .../dts/mediatek/mt8395-radxa-nio-12l.dts     | 102 ++++++++++++++++++
 2 files changed, 103 insertions(+)
 create mode 100644 arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts

diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
index 679dddb09966..cf997191d046 100644
--- a/arch/arm64/boot/dts/mediatek/Makefile
+++ b/arch/arm64/boot/dts/mediatek/Makefile
@@ -76,4 +76,5 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt8195-demo.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8195-evb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8365-evk.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8395-genio-1200-evk.dtb
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt8395-radxa-nio-12l.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8516-pumpkin.dtb
diff --git a/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts b/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts
new file mode 100644
index 000000000000..2c4d6805b668
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts
@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2023 MediaTek Inc.
+ * Copyright (C) 2024 Collabora Ltd.
+ * Author: Ben Lok <ben.lok@mediatek.com>
+ *	   Macpaul Lin <macpaul.lin@mediatek.com>
+ *         AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+ */
+
+#include "mt8195.dtsi"
+#include <dt-bindings/pinctrl/mt8195-pinfunc.h>
+
+/ {
+	model = "Radxa NIO 12L";
+	chassis-type = "embedded";
+	compatible = "radxa,nio-12l", "mediatek,mt8395", "mediatek,mt8195";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:921600n8";
+	};
+
+	firmware {
+		optee {
+			compatible = "linaro,optee-tz";
+			method = "smc";
+		};
+	};
+
+	memory@40000000 {
+		device_type = "memory";
+		reg = <0 0x40000000 0x1 0x0>;
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		/*
+		 * 12 MiB reserved for OP-TEE (BL32)
+		 * +-----------------------+ 0x43e0_0000
+		 * |      SHMEM 2MiB       |
+		 * +-----------------------+ 0x43c0_0000
+		 * |        | TA_RAM  8MiB |
+		 * + TZDRAM +--------------+ 0x4340_0000
+		 * |        | TEE_RAM 2MiB |
+		 * +-----------------------+ 0x4320_0000
+		 */
+		optee_reserved: optee@43200000 {
+			reg = <0 0x43200000 0 0xc00000>;
+			no-map;
+		};
+
+		scp_mem: memory@50000000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0x50000000 0 0x2900000>;
+			no-map;
+		};
+
+		vpu_mem: memory@53000000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0x53000000 0 0x1400000>; /* 20 MB */
+		};
+
+		/* 2 MiB reserved for ARM Trusted Firmware (BL31) */
+		bl31_secmon_mem: memory@54600000 {
+			reg = <0 0x54600000 0x0 0x200000>;
+			no-map;
+		};
+
+		afe_mem: memory@60000000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0x60000000 0 0x1100000>;
+			no-map;
+		};
+
+		apu_mem: memory@62000000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0x62000000 0 0x1400000>; /* 20 MB */
+		};
+	};
+};
+
+&pio {
+	uart0_pins: uart0-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO98__FUNC_UTXD0>,
+				 <PINMUX_GPIO99__FUNC_URXD0>;
+		};
+	};
+};
+
+&uart0 {
+	/* Exposed at 40 pin connector */
+	pinctrl-0 = <&uart0_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
-- 
2.43.0