Hi Sir/Madam, I set pinmux spreadsheet (D8, D5) and generate dti as following uart7_tx_pw6 { nvidia,pins = "uart7_tx_pw6"; nvidia,function = "uartg"; nvidia,pull = <TEGRA_PIN_PULL_NONE>; nvidia,tristate = <TEGRA_PIN_DISABLE>; nvidia,enable-input = <TEGRA_PIN_DISABLE>; nvidi…

hello JasonFan, confirmed we had included the uart failure fix in JetPack-3.2 DP [url] https://developer.nvidia.com/embedded/downloads#?search=jetpack%203.2[/url] please have a development with this JetPack release. thanks

Hi JerryChang, The kernel related failure messages are as below serial-tegra c290000.serial: Failed to add uart port, err -22 serial-tegra: probe of c290000.serial failed with error -22 The whole log is attachement Thanks 1113.log (90.1 KB)

hello JasonFan, according to your kernel message, here are all tty devices being detected. seems you did not add UART(serial@c290000) correctly. [ 3.027817] 3110000.serial: ttyTHS1 at MMIO 0x3110000 (irq = 37, base_baud = 0) is a TEGRA_UART [ 3.029079] c280000.serial: ttyTHS2 at MMIO 0xc280…

Hi JerryChang, Yes. I know ttyTHS1~THS3 can work so I add UART7(serial@c290000) like them. (you can see my previous post) The problem is UART7 can’t be added or fail to prob after I add it in device tree. According to “TX2_Parker_TRM_DP07821001p.pdf” it describes UART7 as following. UART7/UARTG:…

hello JasonFan, we’re investigating this internally, will get back to you, thanks

Hi JerryChang, Do you mean modify as the following? serial{ port = <0xff>; has_input; }; I did it as above and re-flash by “sudo ./flash.sh jetson-tx2 mmcblk0p1” but still got the same error messages serial-tegra c290000.serial: Failed to add uart port, err -22 serial-tegra: probe …

hello JasonFan, UART7 device is added successfully just by changing the DT status even without disabling in BPMP DTB. please make sure your serial@c290000 serial port status has changed from ‘disabled’ to ‘okay’. thanks serial@c290000 { ... status = "okay";

Hi JerryChang, I try to change status = “disable” to “okay” in tegra186-soc-uart.dtsi. And also try to add the following codes in tegra186-quill-p3310-c03-00-base.dts serial@c290000{ compatible = "nvidia, tegra186-hsuart" status = "okay" } Both ways are failed to add uart port. I also try…

hello JasonFan, had you compile the device tree correctly? i’m able to saw the UART7 device is added successfully just by changing the DT status, share the diff for your reference. --- a/kernel-dts/t18x-common-platforms/tegra186-quill-common.dtsi +++ b/kernel-dts/t18x-common-platforms/tegra186-q…

How to enable UART7 (D8, D5) as normal UART like other UART (uartc@C280000)

Robotics & Edge Computing Jetson Systems Jetson TX2

JerryChang December 8, 2017, 7:06am 13

hello JasonFan,

please convert below BPMP DTB file with the dtc tool, and please changing the port number to 255 and converted it back to DTB. thanks
tegra186-a02-bpmp-quill-p3310-1000-c01-00-te770d-ucm2.dtb

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How to enable UART7 (D8, D5) as normal UART like other UART (uartc@C280000)

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