UART4 is not working on AGX ORIN(JETPACK 6.0)

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Orin
1

I’m using UART4 for Bluetooth module(Custrom carrier board)
I had tested on microcom, but UART TX is not working

pimux as belows

uart4_tx_ph3 {
nvidia,pins = “uart4_tx_ph3”;
nvidia,function = “uartd”;
nvidia,pull = <TEGRA_PIN_PULL_NONE>;
nvidia,tristate = <TEGRA_PIN_DISABLE>;
nvidia,enable-input = <TEGRA_PIN_DISABLE>;
nvidia,lpdr = <TEGRA_PIN_DISABLE>;
};
uart4_rx_ph4 {
nvidia,pins = “uart4_rx_ph4”;
nvidia,function = “uartd”;
nvidia,pull = <TEGRA_PIN_PULL_UP>;
nvidia,tristate = <TEGRA_PIN_ENABLE>;
nvidia,enable-input = <TEGRA_PIN_ENABLE>;
nvidia,lpdr = <TEGRA_PIN_DISABLE>;
};
uart4_rts_ph5 {
nvidia,pins = “uart4_rts_ph5”;
nvidia,function = “uartd”;
nvidia,pull = <TEGRA_PIN_PULL_NONE>;
nvidia,tristate = <TEGRA_PIN_DISABLE>;
nvidia,enable-input = <TEGRA_PIN_DISABLE>;
nvidia,lpdr = <TEGRA_PIN_DISABLE>;
};
uart4_cts_ph6 {
nvidia,pins = “uart4_cts_ph6”;
nvidia,function = “uartd”;
nvidia,pull = <TEGRA_PIN_PULL_UP>;
nvidia,tristate = <TEGRA_PIN_ENABLE>;
nvidia,enable-input = <TEGRA_PIN_ENABLE>;
nvidia,lpdr = <TEGRA_PIN_DISABLE>;
};

GPIO setting is nothing wrong.

root@eip:/proc# gpioinfo |grep PH
line 43: “PH.00” unused input active-high
line 44: “PH.01” unused output active-high
line 45: “PH.02” unused input active-high
line 46: “PH.03” unused output active-high
line 47: “PH.04” unused input active-high
line 48: “PH.05” unused input active-high
line 49: “PH.06” unused input active-high
line 50: “PH.07” unused input active-high

When I run microcom as shown below and input any key, no output is produced on the UART TX line.

busybox microcom -s 115200 /dev/ttyTHS4

What can I check first?

3

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.
Thanks

Hi salary_korea,

Are you using JP6.0GA (R36.3.0) on your custom carrier board?

Could you run the following command before testing UART4?

$ sudo systemctl stop nvgetty.service
$ sudo systemctl disable nvgetty.service

Is you bluetooth communicated through UART interface?
Please also share the full dmesg for further check.