串口设备节点终于出来了,但这里的ttyS0 、1、2、3分别对应的硬件引脚是哪个呢?如果要改,在哪里改呢?谢谢!

/ # insmod suart_emu.ko

[ 68.428436] am33xx_pruss_uart am33xx_pruss_uart.1: fw size 3912. downloading...

[ 68.436187] Configuring McASP0

[ 68.439453] Configuring McASP1

[ 68.451629] ENABLING PRU0

[ 68.463409] ENABLING PRU1

[ 68.466186] PROGRAM ID PRU0

[ 68.469146] pru_set_ram_data_for, uart_num : 3 pru_num:0 mcasp_num:1 tx_ser:1 rx_ser:0

[ 68.477478] PROGRAM ID PRU1

[ 68.480407] pru_set_ram_data_for, uart_num : 1 pru_num:1 mcasp_num:0 tx_ser:2 rx_ser:0

[ 68.488769] pru_set_ram_data_for, uart_num : 2 pru_num:1 mcasp_num:0 tx_ser:3 rx_ser:1

[ 68.497100] RUN PRU0 [ 68.499420] RUN PRU1

[ 68.501739] am33xx_pruss_uart.1: ttySU0 at MMIO 0x4a310000 (irq = 24) is a suart_tty

[ 68.513885] am33xx_pruss_uart.1: ttySU1 at MMIO 0x4a310000 (irq = 25) is a suart_tty

[ 68.522827] am33xx_pruss_uart.1: ttySU2 at MMIO 0x4a310000 (irq = 20) is a suart_tty

[ 68.534210] am33xx_pruss_uart.1: ttySU3 at MMIO 0x4a310000 (irq = 21) is a suart_tty

[ 68.543029] am33xx_pruss_uart am33xx_pruss_uart.1: am33xx_pruss_uart device registered(pru_clk=192000000, asp_clk=100000000)