Re: [PATCH 1/9] usb: chipidea: usbmisc: Add USB Host support for i.MX25/i.MX35 CPUs

[Alexander Shiyan]

Воскресенье,  9 марта 2014, 22:21 -03:00 от Fabio Estevam <festevam at gmail.com>:
> Hi Denis,
> 
> On Fri, Mar 7, 2014 at 2:04 PM, Denis Carikli <denis at eukrea.com> wrote:
> 
> > +static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
> > +{
> > +       void __iomem *reg = NULL;
> 
> This variable is not used and causes a warning. Please remove it.
> 
> After applying this patch things go further when I boot with a USB
> thumb connected to the USB Host1 port:
...
> (Not sure why it says full-speed device. When I connect the same
> device to a PC it says high-speed)
...
> (Then system hangs here).
> 
> If I boot without the USB thumb connected, then I reach the prompt,
> however after inserting the USB pen drive into USBH1 there is no
> detection.
> 
> Any ideas?

Fabio, start with to make work USB port on your board in the bootloader.
Then with the previous driver (ehci-mxc).
Most likely problem is a wrong (or missing) clock.
As I mentioned earlier, DTS has incorrect clock nodes.

---