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From:   Jisheng Zhang <jszhang@kernel.org>
To:     Thomas Gleixner <tglx@linutronix.de>,
        Marc Zyngier <maz@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Daniel Lezcano <daniel.lezcano@linaro.org>
Cc:     linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
        linux-riscv@lists.infradead.org,
        Inochi Amaoto <inochiama@outlook.com>
Subject: [PATCH v2 5/5] riscv: dts: sophgo: add Milk-V Duo board device tree
Date:   Fri,  6 Oct 2023 20:14:49 +0800
Message-Id: <20231006121449.721-6-jszhang@kernel.org>
In-Reply-To: <20231006121449.721-1-jszhang@kernel.org>
References: <20231006121449.721-1-jszhang@kernel.org>
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Milk-V Duo[1] board is an embedded development platform based on the
CV1800B chip. Add minimal device tree files for the development board.

Support basic uart drivers, so supports booting to a basic shell.

Link: https://milkv.io/duo [1]
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
 arch/riscv/boot/dts/sophgo/Makefile           |  2 +-
 .../boot/dts/sophgo/cv1800b-milkv-duo.dts     | 38 +++++++++++++++++++
 2 files changed, 39 insertions(+), 1 deletion(-)
 create mode 100644 arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts

diff --git a/arch/riscv/boot/dts/sophgo/Makefile b/arch/riscv/boot/dts/sophgo/Makefile
index 5a471b19df22..3fb65512c631 100644
--- a/arch/riscv/boot/dts/sophgo/Makefile
+++ b/arch/riscv/boot/dts/sophgo/Makefile
@@ -1,3 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_SOPHGO) += cv1800b-milkv-duo.dtb
 dtb-$(CONFIG_ARCH_SOPHGO) += sg2042-milkv-pioneer.dtb
-
diff --git a/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts b/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
new file mode 100644
index 000000000000..3af9e34b3bc7
--- /dev/null
+++ b/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
+ */
+
+/dts-v1/;
+
+#include "cv1800b.dtsi"
+
+/ {
+	model = "Milk-V Duo";
+	compatible = "milkv,duo", "sophgo,cv1800b";
+
+	aliases {
+		serial0 = &uart0;
+		serial1 = &uart1;
+		serial2 = &uart2;
+		serial3 = &uart3;
+		serial4 = &uart4;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x3f40000>;
+	};
+};
+
+&osc {
+	clock-frequency = <25000000>;
+};
+
+&uart0 {
+	status = "okay";
+};
-- 
2.40.1