Hardware uart1 cannot find ttyTHS* on Orin NX

Autonomous Machines Jetson & Embedded Systems Jetson Orin NX
1

hardware uart1，ttyTHS0 do not data

	uartb: serial@3110000 {
		compatible = "nvidia,tegra194-hsuart";
		iommus = <&smmu_niso0 TEGRA_SID_NISO0_GPCDMA_0>;
		dma-coherent;
		reg = <0x0 0x03110000 0x0 0x10000>;
		reg-shift = <2>;
		interrupts = <0 TEGRA234_IRQ_UARTB 0x04>;
		nvidia,memory-clients = <14>;
		dmas = <&gpcdma 9>, <&gpcdma 9>;
		dma-names = "rx", "tx";
		clocks = <&bpmp_clks TEGRA234_CLK_UARTB>,
			<&bpmp_clks TEGRA234_CLK_PLLP_OUT0>;
		clock-names = "serial", "parent";
		resets = <&bpmp_resets TEGRA234_RESET_UARTB>;
		reset-names = "serial";
		status = "okay";
	};

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3

any dmesg to share?

4

dmesg.txt (66.2 KB)

5

serial@3110000 is on ttyTHS1.

6

ttyTHS1我从串口发给orin nx平台，orin nx没有数据

7

Is the pinmux setting correct?

8

我用默认的pin

9

硬件uart1 对应就是ttyTHS0，现在有数据了

10

Hi,

應該是你貼錯了. serial@3110000 是uart2. 對應的是ttyTHS1
serial@3100000 → ttyTHS0…

1 Like
12

Hi
I guess the comments in tegra234-p3509-a02.dtsi are misleading, UART2 Goes to M2.E in P3509, not UART5, you probably copied them from other orin’s dts. 😂

	serial@3140000 {
		/* UARTE, Goes to M2.E and also some of the pins to bootstrap */
		status = "okay";
	};
14

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