topic Re: Freescale On-Chip EHCI Host Controller problem in i.MX Processors

Freescale On-Chip EHCI Host Controller problem

sountharya1z — Fri, 17 Aug 2012 08:47:30 GMT

Hi I am working in imx51 processor. In my project we are using 7 port USB(USB2517.) After enabling in Kconfig when I boot up the kernel it hangs after ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver It is not detecting the Freescale On-Chip EHCI Host Controller. Is there anything am I missing. I googled in net but no clue of what is wrong. Thanks for your valuable information Regards, Sountharya R

Re: Freescale On-Chip EHCI Host Controller problem

OD — Fri, 17 Aug 2012 17:59:44 GMT

You mean the hub will hang the system when you plug it to the root hub port?

Re: Freescale On-Chip EHCI Host Controller problem

sountharya1z — Sat, 18 Aug 2012 04:15:58 GMT

Ya. The system hangs when I enabled the "support for Host1 port on freescale Controller" in Kconfig

OD said:

You mean the hub will hang the system when you plug it to the root hub port?

Re: Freescale On-Chip EHCI Host Controller problem

makeshi — Wed, 29 Aug 2012 05:35:39 GMT

First need check your USB power,is Host VBUS active?Is the USB phy power is good? Then please add some debug message to check the system why and where hang?Is there access the register cause system hang?

Re: Freescale On-Chip EHCI Host Controller problem

sountharya1z — Fri, 31 Aug 2012 03:55:14 GMT

Thanks for your response make shi.. Ya now the USB is working fine.. It is due to the power and clock thats going to USB. Thank you all.

Re: Freescale On-Chip EHCI Host Controller problem

tamasfekete — Tue, 05 Mar 2013 14:07:02 GMT

Hello All!

I have a similar problem to this.

The first and the last usb related message I have:

ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver

missing: init EHCI-MXC or something like this

It seems I also can have voltage problem.

I am using kernel 3.2 and dtb file. I supposes I enabled everything.

Is there someone else who uses dtb too?

Maybe someone has idea where and how I should define ehci node in dtb file?

Thanks,

Tamas