[PATCH v3 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..e574a062dfae 100644
--- a/arch/mips/boot/dts/loongson/ls7a-pch.dtsi
+++ b/arch/mips/boot/dts/loongson/ls7a-pch.dtsi
@@ -367,5 +367,12 @@ pci_bridge@14,0 {
                                interrupt-map = <0 0 0 0 &pic 39 
IRQ_TYPE_LEVEL_HIGH>;
                        };
                };
+
+               isa {
+                       compatible = "isa";
+                       #address-cells = <2>;
+                       #size-cells = <1>;
+                       ranges = <1 0 0 0x18000000 0x20000>;
+               };
        };
 };
-- 
2.28.0.rc1