linux-kernel - [PATCH 1/4] LoongArch: Update dts for Loongson-2K1000 to support ISA/LPC

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Date: Wed, 10 Apr 2024 21:18:01 +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 1/4] LoongArch: Update dts for Loongson-2K1000 to support ISA/LPC

Some Loongson-2K1000 platforms have ISA/LPC devices such as Super-IO,
define an ISA node in the dts file to avoid access error.

Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
---
 arch/loongarch/boot/dts/loongson-2k1000.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/loongarch/boot/dts/loongson-2k1000.dtsi b/arch/loongarch/boot/dts/loongson-2k1000.dtsi
index 49a70f8c3cab..b6aeb1f70e2a 100644
--- a/arch/loongarch/boot/dts/loongson-2k1000.dtsi
+++ b/arch/loongarch/boot/dts/loongson-2k1000.dtsi
@@ -100,6 +100,13 @@ bus@...00000 {
 		#size-cells = <2>;
 		dma-coherent;
 
+		isa@...00000 {
+			compatible = "isa";
+			#size-cells = <1>;
+			#address-cells = <2>;
+			ranges = <1 0x0 0x0 0x18000000 0x4000>;
+		};
+
 		liointc0: interrupt-controller@...01400 {
 			compatible = "loongson,liointc-2.0";
 			reg = <0x0 0x1fe01400 0x0 0x40>,
-- 
2.43.0