Crash on write to USBC_UOG2_PORTSC1

[davidjaouen]

Hi,

I'm porting MQX4.2 to the i.MX6SX. I'm trying to make the USB v2 stack working.

When executing the usb_ehci_init() function in ehci_host.c, the cortex-M4 crashes when it tries to

write 0x10001000 in the USBC_UOG2_PORTSC1 register(@0x42184384).

Any idea why the M4 crashes?

Regards,

David Jaouen

[igorpadykov · Accepted solution]

Hi David

one can check if clock is enabled in CCM_CCGRn

registers and permissions from RDC side.

Best regards

igor

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[davidjaouen]

Hi Igor,

Thanks for your answer. The USB PLL was not enabled so...

Regards,

David