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我们现在要使用串口uart0通讯,对应的驱动设备文件是哪个?我用/dev/ttyS0和/dev/ttyS4发现都不通
[ 1.166529] Serial: 8250/16550 driver, 5 ports, IRQ sharing disabled
[ 1.167729] ff180000.serial: ttyS0 at MMIO 0xff180000 (irq = 35, base_baud = 1500000) is a 16550A
[ 1.169072] ff370000.serial: ttyS4 at MMIO 0xff370000 (irq = 37, base_baud = 1500000) is a 16550A
[ 1.171006] [drm] Initialized drm 1.1.0 20060810
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