Read USB OTG register in IMX8MM

[ajita02]

Hi all,

I want to read "USBNC_n_PHY_STATUS" register in IMX8MM board. How can we do that?

Thanks,
Ajita

iMX8MMINI  #USB #USB_PHY

[ajita02 · Accepted solution]

Hi all,

I made changes in usbmisc_imx.c file. I am able to detect USB connection to charger, USB connection to PC and USB disconnection. Please close this issue.

Thanks & Regards,
Ajita

[ajita02]

I want to read that register while my application is working. Can you tell me how can we achieve that?

[Harvey021]

Hi 

You can read it either use md at U-Boot or use memtool at /unit_tests.

Regards

Harvey

[ajita02]

Hi @Harvey021 ,

We want to know whether USB cable is connected or not to board. We have only VBUS pin not ID pin. also, our custom board only have USB peripheral hardware present. Can you help us to know detection event of USB from software?

Thanks,
Ajita