#dmesg 查看
部分内容是:
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Serial: IMX driver
imx-uart.2: ttySAC2 at MMIO 0x21ec000 (irq = 60) is a IMX
imx-uart.0: ttySAC0 at MMIO 0x2020000 (irq = 58) is a IMX
console [ttySAC0] enabled, bootconsole disabled
imx-uart.1: ttySAC1 at MMIO 0x21e8000 (irq = 59) is a IMX
imx-uart.3: ttySAC3 at MMIO 0x21f0000 (irq = 61) is a IMX
Register led successfully
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