Kernel configuration problem

Hi,

I just tried to attach a device using serial through USB.
I found out that it doesn't work on apex but does on xavier dev kit.
The problem was that the current kernel configuration of apex doesn't have CONFIG_USB_ACM set, which is set by default in recent L4T source.
I have no idea why this happens, but this definitely is a problem.

There probably would be more missings in current apex kernel, compared to default one.
Please check this and let me know.

BTW, please renew cert of the webserver.
Browser prevents me to access here all the time, due to expired https cert.

Thanks for your feedback, we will provide the driver files.
The attachment is the driver file provided，and you need to do the following instructions.

1. sudo cp cdc-acm.ko /lib/modules/4.9.140+/kernel/drivers/usb/class/cdc-acm.ko
   
2. sudo depmod
   
3. sudo modprobe cdc-acm

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fengl 发表于 2020-10-27 18:00
Thanks for your feedback, we will provide the driver files.
The attachment is the driver file provid ...

Thanks, will take a look.

Hope that new images would not be that different from default xavier settings.

This helps, but other problems poped out.
We're using some IMU, which requires additional driver to be loaded, thus have been compiled and used it without any problem on dev kit.
Doing same thing, makes weird error, and driver couldn't be loaded successfully.
Below is part of syslog

Oct 28 12:44:37 miivii-tegra kernel: [    3.147733] usbcore: registered new interface driver cdc_wdm
Oct 28 12:44:37 miivii-tegra kernel: [    3.147763] usbcore: registered new interface driver uas
Oct 28 12:44:37 miivii-tegra kernel: [    3.147802] usbcore: registered new interface driver usb-storage
Oct 28 12:44:37 miivii-tegra kernel: [    3.147861] usbcore: registered new interface driver usbserial
Oct 28 12:44:37 miivii-tegra kernel: [    3.147886] usbcore: registered new interface driver xsens_mt
Oct 28 12:44:37 miivii-tegra kernel: [    3.147907] usbserial: USB Serial support registered for xsens_mt
Oct 28 12:44:37 miivii-tegra kernel: [    3.148413] tegra-usb-cd usb_cd: failed to allocate extcon device
Oct 28 12:44:37 miivii-tegra kernel: [    3.148685] tegra-usb-cd: probe of usb_cd failed with error -38

So I checked kernel config again, and found out that CONFIG_EXTCON and CONFIG_EXTCON_(GPIO/USB_GPIO) are missing in apex which dev kit has.
I'm not sure whether those can be also loaded as module.
Could you check?

I need you to provide the apex version。

1. cat /etc/miivii_release

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fengl 发表于 2020-10-28 16:30
I need you to provide the apex version。

MIIVII APEX XAVIER 4.4-1.1.0

I made a mistake.
I will provide you with a driver file again, and you can test it again.
Thanks.

fengl 发表于 2020-10-29 09:45
I made a mistake.
I will provide you with a driver file again, and you can test it again.
Thanks.

cdc-adm is different from what i suffer right now, it's related to ublox gnss receiver not IMU.
I solved cdc-adm issue by copying module file from existing dev kit.
cdc-adm is relatively easy as loading module is quite straight-forward.

I checked our config file. We did not make any changes to the configuration of CONFIG_EXTCON and CONFIG_EXTCON_(GPIO/USB_GPIO).
But in addition to some of the options we added, we did remove some configuration options. In addition to CONFIG_USB_ACM, there are also CONFIG_USB_CHIPIDEA and CONFIG_USB_CHIPIDEA_UDC. Maybe this may affect your use.
In order to be consistent with the dev kit, we will compile these two options into the kernel, you need to replace the Image file in the /boot directory. Hope this will be useful to you.
thanks.