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

[Jiaxun Yang]

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.y...@flygoat.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@10000000 {
                        #interrupt-cells = <2>;
                };
 
+               isa {
+                       compatible = "isa";
+                       #address-cells = <2>;
+                       #size-cells = <1>;
+                       ranges = <1 0 0 0x18000000 0x20000>;
+               };
+
                pci@1a000000 {
                        compatible = "loongson,ls7a-pci";
                        device_type = "pci";
-- 
2.28.0.rc1