The USB on Jetson TX2 does not powered (customized carrier board)

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

my customized carrier board shows:

  1. [ 4.908631] xhci-tegra 3530000.xhci: can't get usb3-0 phy (-517)

nvidia Technical personnel recommendation According to this:https://elinux.org/Jetson/TX2_USB

but when I prepare to Patching the DTS,I can’t find this *.dtsi file all the time.
Although it has a detailed directory:
hardware/nvidia/platform/t18x/common/kernel-dts/t18x-common-platforms/tegra186-quill-power-tree-p3310-1000-a00-00.dtsi.
But I didn’t even find its catalogue.

Who can tell me where this file is and how to get into its path.

2

ghong,

Do you download the kernel source of TX2?

3

thank you . I download the kernel source of TX2.modify it and make it replace .but the problem still exist.Whether there are other problems of investigation?

4

Could you tell us how you replace the dtb?

5

I Reference this https://github.com/jetsonhacks/buildJetsonTX2Kernel

first ./getKernelSources.sh to download kernel source.
then open hardware/nvidia/platform/t18x/common/kernel-dts/t18x-common-platforms/tegra186-quill-power-tree-p3310-1000-a00-00.dtsi.
modified:

pinctrl@3520000 {
     vbus-0-supply = <&vdd_usb0_5v>; 
     vbus-1-supply = <&vdd_usb1_5v>;
     - vbus-2-supply = <&vdd_usb2_5v>;
     + vbus-2-supply = <&battery_reg>; 
     vbus-3-supply = <&battery_reg>; 
     vddio-hsic-supply = <&battery_reg>;
     avdd_usb-supply = <&spmic_sd3>;
     vclamp_usb-supply = <&spmic_sd2>;
     avdd_pll_erefeut-supply = <&spmic_sd2>;
  };

then ./makeKernel.sh
final ./copyImage.sh and reboot.
have any error?

6

I Reference resources this https://github.com/jetsonhacks/buildJetsonTX2Kernel

  1. ./getKernelSources.sh to download kernel source code.

  2. find out hardware/nvidia/platform/t18x/common/kernel-dts/t18x-common-platforms/tegra186-quill-power-tree-p3310-1000-a00-00.dtsi
    and modified like this:

pinctrl@3520000 {
     vbus-0-supply = <&vdd_usb0_5v>; 
     vbus-1-supply = <&vdd_usb1_5v>;
     - vbus-2-supply = <&vdd_usb2_5v>;
     + vbus-2-supply = <&battery_reg>; 
     vbus-3-supply = <&battery_reg>; 
     vddio-hsic-supply = <&battery_reg>;
     avdd_usb-supply = <&spmic_sd3>;
     vclamp_usb-supply = <&spmic_sd2>;
     avdd_pll_erefeut-supply = <&spmic_sd2>;
  };

  1. ./makeKernel.sh to make it

  2. ./copyImage.sh and reboot…

have any mistake?

7

ghong.love,

jetsonhacks is not an official github. Also, I just went through the scripts, “copyImage.sh” does not update your dtb but only update the kernel image. Thus, your dtb is not updated at all.

To update dtb, you need to copy the new dtb to Linux_for_Tegra/kernel/dtb/ and then reflash.

To save time, you can use “sudo ./flash -r -k kernel-dtb jetson-tx2 mmcblk0p1”, then it will update dtb only.

To confirm you are really using the updated dtb, you could go to below node and check the node you update

#on tegra
cd /proc/device-tree
8

thanks,
you are right,the .sh not to build dtb file,only build kernel file.
but I still have a question.
that’s after I modified the *.disi file, how to compile new dtb file?
Is there a more detailed tutorial?

9

ghong.love,

in kernel_sources/kernel/kernel-4.4/ just run “make -j6 dtbs”

result dtb files u can find in kernel-4.4/arch/arm64/boot/dts

10

Special thanks to Fobos,WayneWWW.
I’ve solved the problem,I can saw usb device.There’s a little bit of uncertainty here .
after my modified.that’s use 3.0 channel or 2.0 channel?
I will test it.

11

There is a “make dtbs” target when building kernels.