linux-kernel - Re: [PATCH 5/5] riscv: dts: sophgo: add Milk-V Duo board device tree

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Date:   Wed, 4 Oct 2023 14:50:12 +0800
From:   Chen Wang <unicorn_wang@...look.com>
To:     Jisheng Zhang <jszhang@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Anup Patel <anup@...infault.org>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-riscv@...ts.infradead.org,
        Inochi Amaoto <inochiama@...look.com>, chao.wei@...hgo.com,
        xiaoguang.xing@...hgo.com
Subject: Re: [PATCH 5/5] riscv: dts: sophgo: add Milk-V Duo board device tree


在 2023/9/30 20:39, Jisheng Zhang 写道:
> 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@...nel.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..5ea9ce398ff6 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-$(CONFIG_ARCH_SOPHGO) += sg2042-milkv-pioneer.dtb
> -
> +dtb-$(CONFIG_ARCH_SOPHGO) += cv1800b-milkv-duo.dtb
Please adjust it in alphabetical order.
> 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@...nel.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@...00000 {
> +		device_type = "memory";
> +		reg = <0x80000000 0x3f40000>;
> +	};
> +};
> +
> +&osc {
> +	clock-frequency = <25000000>;
> +};
> +
> +&uart0 {
> +	status = "okay";
> +};