linux-kernel - Re: [PATCH v2 1/2] dt-bindings: interrupt-controller: Add Sophgo SG2044 MSI controller

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Message-ID:
 <PN0PR01MB1039316B7E02955833244F426FED52@PN0PR01MB10393.INDPRD01.PROD.OUTLOOK.COM>
Date: Fri, 7 Mar 2025 14:15:44 +0800
From: Chen Wang <unicorn_wang@...look.com>
To: Inochi Amaoto <inochiama@...il.com>, Thomas Gleixner
 <tglx@...utronix.de>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
 sophgo@...ts.linux.dev, Yixun Lan <dlan@...too.org>,
 Longbin Li <looong.bin@...il.com>, Conor Dooley <conor.dooley@...rochip.com>
Subject: Re: [PATCH v2 1/2] dt-bindings: interrupt-controller: Add Sophgo
 SG2044 MSI controller


On 2025/3/7 9:06, Inochi Amaoto wrote:
> Like SG2042, SG2044 also uses an external msi controller to provide
> MSI interrupt for PCIe controllers. The difference between these
> two msi controlling are summary as follows:
>
> 1. SG2044 acks the interrupt by writing 0, as on SG2042 by setting
>     related bit.
> 2. SG2044 uses interrupt number mod 32 as msi message data, but
>     SG2042 uses setting related bit.
>
> Add support for the SG2044 msi controller.
>
> Signed-off-by: Inochi Amaoto <inochiama@...il.com>
> Acked-by: Conor Dooley <conor.dooley@...rochip.com>
Reviewed-by: Chen Wang <unicorn_wang@...look.com>
> ---
>   .../bindings/interrupt-controller/sophgo,sg2042-msi.yaml      | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml b/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml
> index e1ffd55fa7bf..f6b8b1d92f79 100644
> --- a/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml
> +++ b/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml
> @@ -18,7 +18,9 @@ allOf:
>
>   properties:
>     compatible:
> -    const: sophgo,sg2042-msi
> +    enum:
> +      - sophgo,sg2042-msi
> +      - sophgo,sg2044-msi
>
>     reg:
>       items:
> --
> 2.48.1
>