linux-kernel - Re: [PATCH 1/2] riscv: dts: sophgo: sg2044: add MSI device support for SG2044

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Message-ID:
 <MA0P287MB2262FA77FD547D60257FCC1CFE7DA@MA0P287MB2262.INDP287.PROD.OUTLOOK.COM>
Date: Thu, 19 Jun 2025 15:13:46 +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 1/2] riscv: dts: sophgo: sg2044: add MSI device support
 for SG2044


On 2025/6/18 9:58, Inochi Amaoto wrote:
> Add MSI device tree node for SG2044.
>
> Signed-off-by: Inochi Amaoto <inochiama@...il.com>
> ---
>   arch/riscv/boot/dts/sophgo/sg2044-sophgo-srd3-10.dts |  4 ++++
>   arch/riscv/boot/dts/sophgo/sg2044.dtsi               | 11 +++++++++++
>   2 files changed, 15 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 b50c3a872d8b..c97bd62e5f06 100644
> --- a/arch/riscv/boot/dts/sophgo/sg2044-sophgo-srd3-10.dts
> +++ b/arch/riscv/boot/dts/sophgo/sg2044-sophgo-srd3-10.dts
> @@ -63,6 +63,10 @@ mcu: syscon@17 {
>   	};
>   };
>   
> +&msi {
> +	status = "okay";
> +};
> +
>   &pwm {
>   	status = "okay";
>   };
> diff --git a/arch/riscv/boot/dts/sophgo/sg2044.dtsi b/arch/riscv/boot/dts/sophgo/sg2044.dtsi
> index f88cabe75790..aae4539dea98 100644
> --- a/arch/riscv/boot/dts/sophgo/sg2044.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/sg2044.dtsi
> @@ -32,6 +32,17 @@ soc {
>   		#size-cells = <2>;
>   		ranges;
>   
> +		msi: msi-controller@...0000000 {
> +			compatible = "sophgo,sg2044-msi";
> +			reg = <0x6d 0x50000000 0x0 0x800>,
> +			      <0x0 0x7ee00000 0x0 0x40>;
> +			reg-names = "clr", "doorbell";
> +			#msi-cells = <0>;
> +			msi-controller;
> +			msi-ranges = <&intc 352 IRQ_TYPE_LEVEL_HIGH 512>;
> +			status = "disabled";
> +		};
> +
>   		spifmc0: spi@...1000000 {
>   			compatible = "sophgo,sg2044-spifmc-nor";
>   			reg = <0x70 0x01000000 0x0 0x4000000>;

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