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

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Message-ID: <20250618015851.272188-2-inochiama@gmail.com>
Date: Wed, 18 Jun 2025 09:58:48 +0800
From: Inochi Amaoto <inochiama@...il.com>
To: 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>,
	Chen Wang <unicorn_wang@...look.com>,
	Inochi Amaoto <inochiama@...il.com>,
	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: [PATCH 1/2] riscv: dts: sophgo: sg2044: add MSI device support for SG2044

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>;
-- 
2.49.0