linux-kernel - [PATCH v3 5/9] MIPS: dts: loongson: Add CQ-T300B board

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Message-Id: <20250716-loongson1-arch-v3-5-d160974d696b@gmail.com>
Date: Wed, 16 Jul 2025 19:25:14 +0800
From: Keguang Zhang via B4 Relay <devnull+keguang.zhang.gmail.com@...nel.org>
To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Jiaxun Yang <jiaxun.yang@...goat.com>, 
 Keguang Zhang <keguang.zhang@...il.com>
Cc: linux-mips@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org
Subject: [PATCH v3 5/9] MIPS: dts: loongson: Add CQ-T300B board

From: Keguang Zhang <keguang.zhang@...il.com>

Add a device tree for CQ-T300B board.

Signed-off-by: Keguang Zhang <keguang.zhang@...il.com>
---
 arch/mips/boot/dts/loongson/Makefile     |   1 +
 arch/mips/boot/dts/loongson/cq-t300b.dts | 110 +++++++++++++++++++++++++++++++
 2 files changed, 111 insertions(+)

diff --git a/arch/mips/boot/dts/loongson/Makefile b/arch/mips/boot/dts/loongson/Makefile
index de4570380c3e..e8f76e7ac303 100644
--- a/arch/mips/boot/dts/loongson/Makefile
+++ b/arch/mips/boot/dts/loongson/Makefile
@@ -6,6 +6,7 @@ dtb-$(CONFIG_MACH_LOONGSON64)	+= loongson64c_8core_rs780e.dtb
 dtb-$(CONFIG_MACH_LOONGSON64)	+= loongson64g_4core_ls7a.dtb
 dtb-$(CONFIG_MACH_LOONGSON64)	+= loongson64v_4core_virtio.dtb
 
+dtb-$(CONFIG_MACH_LOONGSON32)	+= cq-t300b.dtb
 dtb-$(CONFIG_MACH_LOONGSON32)	+= ls1b-demo.dtb
 dtb-$(CONFIG_MACH_LOONGSON32)	+= lsgz_1b_dev.dtb
 dtb-$(CONFIG_MACH_LOONGSON32)	+= smartloong-1c.dtb
diff --git a/arch/mips/boot/dts/loongson/cq-t300b.dts b/arch/mips/boot/dts/loongson/cq-t300b.dts
new file mode 100644
index 000000000000..5244fab2496d
--- /dev/null
+++ b/arch/mips/boot/dts/loongson/cq-t300b.dts
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023-2025 Keguang Zhang <keguang.zhang@...il.com>
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "loongson1c.dtsi"
+
+/ {
+	compatible = "loongson,cq-t300b", "loongson,ls1c";
+	model = "CQ-T300B Board";
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x8000000>;
+	};
+
+	aliases {
+		gpio0 = &gpio0;
+		gpio1 = &gpio1;
+		gpio2 = &gpio2;
+		gpio3 = &gpio3;
+		serial0 = &uart2;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led0 {
+			label = "led0";
+			gpios = <&gpio1 20 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "heartbeat";
+		};
+
+		led1 {
+			label = "led1";
+			gpios = <&gpio1 21 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "nand-disk";
+		};
+	};
+};
+
+&xtal {
+	clock-frequency = <24000000>;
+};
+
+&emac {
+	phy-handle = <&phy0>;
+	phy-mode = "rmii";
+	status = "okay";
+
+	mdio {
+		compatible = "snps,dwmac-mdio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		phy0: ethernet-phy@13 {
+			reg = <0x13>;
+		};
+	};
+};
+
+&nand {
+	status = "okay";
+
+	nand@0 {
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "kernel";
+				reg = <0x0 0x1000000>;
+			};
+
+			partition@...0000 {
+				label = "rootfs";
+				reg = <0x1000000 0x3f000000>;
+			};
+		};
+	};
+};
+
+&ehci {
+	status = "okay";
+};
+
+&ohci {
+	status = "okay";
+};
+
+&rtc {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
+
+&watchdog {
+	status = "okay";
+};

-- 
2.43.0