linux-kernel - [PATCH 5/5] MIPS: Loongson64: Add ISA node for LS7A PCH

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Date:   Mon, 20 Jul 2020 15:42:38 +0800
From:   Jiaxun Yang <jiaxun.yang@...goat.com>
To:     linux-mips@...r.kernel.org
Cc:     Jiaxun Yang <jiaxun.yang@...goat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Huacai Chen <chenhc@...ote.com>,
        Frank Rowand <frowand.list@...il.com>,
        Paul Burton <paulburton@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 5/5] MIPS: Loongson64: Add ISA node for LS7A PCH

Although currently we're not enabling any ISA device in devicetree,
but this node is required to express the ranges of address reserved
for ISA.

Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
 arch/mips/boot/dts/loongson/ls7a-pch.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/mips/boot/dts/loongson/ls7a-pch.dtsi b/arch/mips/boot/dts/loongson/ls7a-pch.dtsi
index 1c286bb8c703..724929ea3f5f 100644
--- a/arch/mips/boot/dts/loongson/ls7a-pch.dtsi
+++ b/arch/mips/boot/dts/loongson/ls7a-pch.dtsi
@@ -19,6 +19,13 @@ pic: interrupt-controller@...00000 {
 			#interrupt-cells = <2>;
 		};
 
+		isa {
+			compatible = "isa";
+			#address-cells = <2>;
+			#size-cells = <1>;
+			ranges = <1 0 0 0x18000000 0x20000>;
+		};
+
 		pci@...00000 {
 			compatible = "loongson,ls7a-pci";
 			device_type = "pci";
-- 
2.28.0.rc1