Unable to correspond to "func" and "uart_tx"

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
3

Hi cc15,

Please refer to the following table from Jetson AGX Orin Product Design Guide for UART.

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and also refer to the pinmux table and tegra234-soc-uart.dtsi.
You would get the following information of UART, there are 5 UART.

Module-UART# => SoC-UART#(used pins): <uart*>@<address>(serial#) - <node>

  • UART1 => UART1(PR02, PR03, PR04, PR05): uarta@3100000 (serial0) - /dev/ttyTHS0
  • UART2 => UART5(PY05, PY06, PY07, PZ00): uarte@3140000 (serial4) - /dev/ttyTHS4
  • UART3 => UART3(PCC05, PCC06): uartc@c280000 (serial2) - /dev/ttyTCU0
  • UART4 => UART4(PH03, PH04, PH05, PH06): uartd@3130000 (serial3) - /dev/ttyTHS3
  • UART5 => UART2(PX04, PX05, PX06, PX07): uartb@3110000 (serial1) - /dev/ttyTHS1

If you want to use any UART, please make sure to enable it in device tree and configure in pinmux correctly.