linux-kernel - Re: [PATCH] riscv: dts: sophgo: sophgo-srd3-10: reserve uart0 device

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Message-ID:
 <PNYPR01MB111714C72459231C3CEBFE09FFE43A@PNYPR01MB11171.INDPRD01.PROD.OUTLOOK.COM>
Date: Fri, 4 Jul 2025 07:52:09 +0800
From: Chen Wang <unicorn_wang@...look.com>
To: Inochi Amaoto <inochiama@...il.com>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Paul Walmsley <paul.walmsley@...ive.com>,
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
 Alexandre Ghiti <alex@...ti.fr>, Longbin Li <looong.bin@...il.com>
Cc: devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
 sophgo@...ts.linux.dev, linux-kernel@...r.kernel.org,
 Yixun Lan <dlan@...too.org>
Subject: Re: [PATCH] riscv: dts: sophgo: sophgo-srd3-10: reserve uart0 device


On 2025/7/3 8:40, Inochi Amaoto wrote:
> As the uart0 is already occupied by the firmware, reserve it
> to avoid this port is used by mistake.
>
> Signed-off-by: Inochi Amaoto <inochiama@...il.com>
Reviewed-by: Chen Wang <wangchen20@...as.ac.cn>
> ---
>   arch/riscv/boot/dts/sophgo/sg2044-sophgo-srd3-10.dts | 5 +++++
>   1 file changed, 5 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/sophgo/sg2044-sophgo-srd3-10.dts b/arch/riscv/boot/dts/sophgo/sg2044-sophgo-srd3-10.dts
> index 96ccb6120114..1b506972d465 100644
> --- a/arch/riscv/boot/dts/sophgo/sg2044-sophgo-srd3-10.dts
> +++ b/arch/riscv/boot/dts/sophgo/sg2044-sophgo-srd3-10.dts
> @@ -113,6 +113,11 @@ &sd {
>   	status = "okay";
>   };
>   
> +&uart0 {
> +	/* for firmware */
> +	status = "reserved";
> +};
> +
>   &uart1 {
>   	status = "okay";
>   };