from Loongson-2K1000 user manual know that under pci bus the device num is 4, function number is 2 and register is 0x2200 is ohci. the ohci interrupt number is 51. because Loongson-2K1000 has 64 interrupt sources, 0-31 correspond to the device tree liointc0 device node, and the other correspond to liointc1 node. so it should be number 19 correspon to liointc1. Signed-off-by: xiaochuan mao <maoxiaochuan@xxxxxxxxxxx> --- arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi b/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi index fd0e99bfe57b..89f079097f32 100644 --- a/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi +++ b/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi @@ -125,14 +125,14 @@ interrupt-parent = <&liointc1>; }; - ehci@4,2 { + ohci@4,2 { compatible = "pci0014,7a24.0", "pci0014,7a24", "pciclass0c0310", "pciclass0c03"; reg = <0x2200 0x0 0x0 0x0 0x0>; - interrupts = <17 IRQ_TYPE_LEVEL_LOW>; + interrupts = <19 IRQ_TYPE_LEVEL_LOW>; interrupt-parent = <&liointc1>; }; -- 2.17.1