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Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
console [ttyS0] disabled
f1012000.serial : ttyS0 at MMIO 0xf1012000 (irq = 21, base_baud = 12500000) is a 16550A
console [ttyS0] enabled
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DW=y
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
serial@12000 {
status = "okay";
};
serial@12100 {
pinctrl-names = "default";
pinctrl-0 = <&uart1_pins>;
status = "okay";
};
通过 sys 文件系统确认一下,serial1 到底有没有.