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MIPS: Loongson64: Add UART node for LS7A PCH

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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>
This commit is contained in:
Tiezhu Yang 2020-09-17 20:39:01 +08:00 committed by Thomas Bogendoerfer
parent c1f6b45e63
commit 5fa1f7680f
1 changed files with 39 additions and 0 deletions
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39
arch/mips/boot/dts/loongson/ls7a-pch.dtsi
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@ -19,6 +19,45 @@ pic: interrupt-controller@10000000 {
#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";