TX2-NX UART not work (JetPack4.5.1)

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Hi,

I’m using TX2-NX SOM and NX carrier board (customer designed), UART( PIN203/205) and UART(PIN99/101) can’t work, , if change to NX SOM.
I tried short TX/RX (PIN203/205) and concect to Host PC both not work.

sudo minicom /dev/ttyTHS1

nvidia@tx2-nx:~$ ls /dev/ttyTH*
/dev/ttyTHS1  /dev/ttyTHS3

sudo minicom /dev/ttyTHS1  not work   
sudo minicom /dev/ttyTHS3  not work
2

Hi,

I refer to this topic UART-PIN203/205 works fine.

1. Enable THS2 with /Linux_for_Tegra/bootloader/tegra186-p3636-0001-p3509-0000-a01.dtb
+	serial@c280000 {
+		compatible = "nvidia,tegra186-hsuart";
+		status = "okay";
+	};

2. Disable bpmp-dtb port with /Linux_for_Tegra/bootloader/t186ref/tegra186-bpmp-p3636-0001-a00-00.dtb
-	serial {
-		port = <3>;
-		has_input;
-	};

3. commands
$dtc -I dtb -O dts bootloader/t186ref/tegra186-bpmp-p3636-0001-a00-00.dtb > new.dts
$ dtc -I dts -O dtb -o new.tegra186-bpmp-p3636-0001-a00-00.dtb new.dts
$sudo mv new.tegra186-bpmp-p3636-0001-a00-00.dtb bootloader/t186ref/tegra186-bpmp-p3636-0001-a00-00.dtb > new.dts

$sudo ./flash.sh -r -k bpmp-fw-dtb jetson-xavier-nx-devkit-tx2-nx mmcblk0p1
$sudo ./flash.sh -r -k kernel-dtb jetson-xavier-nx-devkit-tx2-nx mmcblk0p1
3

Glad to know issue resolved, thanks for the update.