[U-Boot] No power on USB host of IMX25 PDK

[Fabio Estevam]

On Fri, Nov 4, 2011 at 2:06 PM, Hugo Holgersson
<hugoh at student.chalmers.se> wrote:
> Thanks for the input!
>
> Putting the mux code to generic.c, as it was done for the UART's pins, did not change anything...
>
> I write MXC_EHCI_MODE_SERIAL to &ehci->portsc. Exactly the same behavior. Same log.
>
> But the question (1) remains; which is the register (the address) of where mxc_set_usbcontrol()
> is supposed to write to? I understand Linux use http://lxr.linux.no/#linux+v3.1/arch/arm/mach-imx/ehci-imx25.c
> uses the IMX_USB_BASE + 0x600 address... But, to me this is outside the usb_ehci-struct, so I
> cannot figure out what register that is located at that address.
>
> Guessing, what about the following possible candidates inside the usb_echi-struct?
> usb_ehci->usbgenctrl
> usb_ehci->hwgeneral
> usb_ehci->control
> usb_ehci->isiphyctrl
>
> I need to find some docs on the controller's registers to understand that.

You need to check MX25RM (Reference Manual) available at
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=i.MX257&nodeId=018rH3ZrDR6B45&fpsp=1&tab=Documentation_Tab

Regards,

Fabio Estevam