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请问一下 am335x中的 pr1_uart0 如何使用，linux 中设备树和驱动如何添加
请参考下面的SDK文档。https://software-dl.ti.com/processor-sdk-linux/esd/docs/07_03_00_005/linux/Foundational_Components/PRU-ICSS/Linux_Drivers/pruss-uart.html
好的谢谢，这个pr1_uart0需不需要pru固件
上面的链接是PRU硬件uart，不用固件，如果实现的是PRU soft uart的话，需要用pru固件，请看下面的说明。https://software-dl.ti.com/processor-sdk-linux/esd/docs/latest/linux/Foundational_Components/PRU-ICSS/Linux_Drivers/pru-sw-uart.html
好的谢谢
不客气~
节日快乐！
