This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Linux/AM6528: WKUP-uart access from A53

Part Number: AM6528

Tool/software: Linux

HI

Can the WKUP_UART be used by linux running on the A53? Do we have any linux examples for this?

Also can the MCU-UART (this is part of the MCU block) be used by the A53 running linux? If yes i assume it is already part of the linux release? 

Any example or how to setup the dts for these 2 uarts would be great.

We need to have 4 UARTS that can be controlled by the A53 running linux. There are 3 as part of the A53 so need one more.

Thanks

  • Hi,

    Yes, both WKUP-UART and MCU-UART are already used in Linux. Please check the devicetree file k3-am6.dtsi in the PLSDK v5.2 kernel:

      22         aliases {
      23                 serial0 = &wkup_uart0;
      24                 serial1 = &mcu_uart0;
      25                 serial2 = &main_uart0;
      26                 serial3 = &main_uart1;
      27                 serial4 = &main_uart2;
    ...