linux-kernel - [PATCH 3/4] LoongArch: Update dts for Loongson-2K2000 to support PCI-MSI

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Date: Wed, 10 Apr 2024 21:18:03 +0800
From: Huacai Chen <chenhuacai@...ngson.cn>
To: Huacai Chen <chenhuacai@...nel.org>
Cc: loongarch@...ts.linux.dev,
	Xuefeng Li <lixuefeng@...ngson.cn>,
	Guo Ren <guoren@...nel.org>,
	Xuerui Wang <kernel@...0n.name>,
	Jiaxun Yang <jiaxun.yang@...goat.com>,
	linux-kernel@...r.kernel.org,
	loongson-kernel@...ts.loongnix.cn,
	Huacai Chen <chenhuacai@...ngson.cn>
Subject: [PATCH 3/4] LoongArch: Update dts for Loongson-2K2000 to support PCI-MSI

Current dts file for Loongson-2K2000 misses the interrupt-controller &
interrupt-cells descriptions in the msi-controller node, and misses the
msi-parent link in the pci root node. Add them to support PCI-MSI.

Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
---
 arch/loongarch/boot/dts/loongson-2k2000.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/loongarch/boot/dts/loongson-2k2000.dtsi b/arch/loongarch/boot/dts/loongson-2k2000.dtsi
index dcee9f3783fd..481c6c869a8b 100644
--- a/arch/loongarch/boot/dts/loongson-2k2000.dtsi
+++ b/arch/loongarch/boot/dts/loongson-2k2000.dtsi
@@ -116,6 +116,8 @@ pic: interrupt-controller@...00000 {
 		msi: msi-controller@...01140 {
 			compatible = "loongson,pch-msi-1.0";
 			reg = <0x0 0x1fe01140 0x0 0x8>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
 			msi-controller;
 			loongson,msi-base-vec = <64>;
 			loongson,msi-num-vecs = <192>;
@@ -147,6 +149,7 @@ pcie@...00000 {
 			#address-cells = <3>;
 			#size-cells = <2>;
 			device_type = "pci";
+			msi-parent = <&msi>;
 			bus-range = <0x0 0xff>;
 			ranges = <0x01000000 0x0 0x00008000 0x0 0x18408000 0x0 0x00008000>,
 				 <0x02000000 0x0 0x60000000 0x0 0x60000000 0x0 0x20000000>;
-- 
2.43.0