linux-kernel - Re: [PATCH v4 7/7] riscv: dts: sophgo: add Huashan Pi board device tree

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Message-ID: <MA0P287MB0332DA4D8F57D0B15E8B9E10FED4A@MA0P287MB0332.INDP287.PROD.OUTLOOK.COM>
Date:   Thu, 19 Oct 2023 20:00:45 +0800
From:   Chen Wang <unicorn_wang@...look.com>
To:     Inochi Amaoto <inochiama@...look.com>,
        Chao Wei <chao.wei@...hgo.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>
Cc:     Jisheng Zhang <jszhang@...nel.org>, devicetree@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 7/7] riscv: dts: sophgo: add Huashan Pi board device
 tree


On 2023/10/19 7:18, Inochi Amaoto wrote:
> Add initial device tree files for the Huashan Pi board.
>
> Note: The boot of CV1812H chip needs a rtos firmware for coprocessor to
> function properly. To make the soc happy, reserved the last 2M memory
> for the rtos firmware.
>
> Signed-off-by: Inochi Amaoto <inochiama@...look.com>
> Link: https://en.sophgo.com/product/introduce/huashan.html
> Link: https://en.sophgo.com/product/introduce/cv181xH.html
> Link: https://github.com/milkv-duo/duo-buildroot-sdk/blob/develop/build/boards/cv181x/cv1812h_wevb_0007a_emmc_huashan/memmap.py#L15
> Reviewed-by: Jisheng Zhang <jszhang@...nel.org>

LGTM.

Acked-by: Chen Wang <unicorn_wang@...look.com>

> ---
>   arch/riscv/boot/dts/sophgo/Makefile           |  1 +
>   .../boot/dts/sophgo/cv1812h-huashan-pi.dts    | 48 +++++++++++++++++++
>   2 files changed, 49 insertions(+)
>   create mode 100644 arch/riscv/boot/dts/sophgo/cv1812h-huashan-pi.dts
>
> diff --git a/arch/riscv/boot/dts/sophgo/Makefile b/arch/riscv/boot/dts/sophgo/Makefile
> index 3fb65512c631..57ad82a61ea6 100644
> --- a/arch/riscv/boot/dts/sophgo/Makefile
> +++ b/arch/riscv/boot/dts/sophgo/Makefile
> @@ -1,3 +1,4 @@
>   # SPDX-License-Identifier: GPL-2.0
>   dtb-$(CONFIG_ARCH_SOPHGO) += cv1800b-milkv-duo.dtb
> +dtb-$(CONFIG_ARCH_SOPHGO) += cv1812h-huashan-pi.dtb
>   dtb-$(CONFIG_ARCH_SOPHGO) += sg2042-milkv-pioneer.dtb
> diff --git a/arch/riscv/boot/dts/sophgo/cv1812h-huashan-pi.dts b/arch/riscv/boot/dts/sophgo/cv1812h-huashan-pi.dts
> new file mode 100644
> index 000000000000..aa361f3a86bb
> --- /dev/null
> +++ b/arch/riscv/boot/dts/sophgo/cv1812h-huashan-pi.dts
> @@ -0,0 +1,48 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Copyright (C) 2023 Inochi Amaoto <inochiama@...look.com>
> + */
> +
> +/dts-v1/;
> +
> +#include "cv1812h.dtsi"
> +
> +/ {
> +	model = "Huashan Pi";
> +	compatible = "sophgo,huashan-pi", "sophgo,cv1812h";
> +
> +	aliases {
> +		gpio0 = &gpio0;
> +		gpio1 = &gpio1;
> +		gpio2 = &gpio2;
> +		gpio3 = &gpio3;
> +		serial0 = &uart0;
> +		serial1 = &uart1;
> +		serial2 = &uart2;
> +		serial3 = &uart3;
> +		serial4 = &uart4;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	reserved-memory {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges;
> +
> +		coprocessor_rtos: region@...00000 {
> +			reg = <0x8fe00000 0x200000>;
> +			no-map;
> +		};
> +	};
> +};
> +
> +&osc {
> +	clock-frequency = <25000000>;
> +};
> +
> +&uart0 {
> +	status = "okay";
> +};
> --
> 2.42.0
>