MIPS: Loongson64: Add UART node for LS7A PCH

When I update the latest kernel on the Loongson platform used with
LS7A bridge chip, the serial console has no output, this is because
the machine uses LS7A UART0 instead of CPU UART0, add UART node for
LS7A PCH to enhance the compatibility.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

diff --git a/arch/mips/boot/dts/loongson/ls7a-pch.dtsi b/arch/mips/boot/dts/loongson/ls7a-pch.dtsi
index e574a062dfaeb3ea4592aac3fefe0e536a42cfe6..f99a7a11fded8b46c7afefeb6b59ca40ebbd2528 100644 (file)
--- a/arch/mips/boot/dts/loongson/ls7a-pch.dtsi
+++ b/arch/mips/boot/dts/loongson/ls7a-pch.dtsi
@@ -19,6 +19,45 @@
                        #interrupt-cells = <2>;
                };
 
+               ls7a_uart0: serial@10080000 {
+                       compatible = "ns16550a";
+                       reg = <0 0x10080000 0 0x100>;
+                       clock-frequency = <50000000>;
+                       interrupt-parent = <&pic>;
+                       interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
+                       no-loopback-test;
+               };
+
+               ls7a_uart1: serial@10080100 {
+                       status = "disabled";
+                       compatible = "ns16550a";
+                       reg = <0 0x10080100 0 0x100>;
+                       clock-frequency = <50000000>;
+                       interrupt-parent = <&pic>;
+                       interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
+                       no-loopback-test;
+               };
+
+               ls7a_uart2: serial@10080200 {
+                       status = "disabled";
+                       compatible = "ns16550a";
+                       reg = <0 0x10080200 0 0x100>;
+                       clock-frequency = <50000000>;
+                       interrupt-parent = <&pic>;
+                       interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
+                       no-loopback-test;
+               };
+
+               ls7a_uart3: serial@10080300 {
+                       status = "disabled";
+                       compatible = "ns16550a";
+                       reg = <0 0x10080300 0 0x100>;
+                       clock-frequency = <50000000>;
+                       interrupt-parent = <&pic>;
+                       interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
+                       no-loopback-test;
+               };
+
                pci@1a000000 {
                        compatible = "loongson,ls7a-pci";
                        device_type = "pci";