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

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Message-ID: <20250307010649.422359-2-inochiama@gmail.com>
Date: Fri,  7 Mar 2025 09:06:46 +0800
From: Inochi Amaoto <inochiama@...il.com>
To: Thomas Gleixner <tglx@...utronix.de>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen Wang <unicorn_wang@...look.com>,
	Inochi Amaoto <inochiama@...il.com>
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: [PATCH v2 1/2] dt-bindings: interrupt-controller: Add Sophgo SG2044 MSI controller

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>
---
 .../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