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

[Fabio Estevam]

2011/11/4 Hugo Holgersson <hugoh at student.chalmers.se>:

> diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c
> index a0cfbb7..54b90c8 100644
> --- a/drivers/usb/host/ehci-mxc.c
> +++ b/drivers/usb/host/ehci-mxc.c
> @@ -102,7 +102,8 @@ static int mxc_set_usbcontrol(int port, unsigned int flags)
>                }
>  #endif
>
> -       writel(v, IMX_USB_BASE + USBCTRL_OTGBASE_OFFSET);
> +       writel(v, (IMX_USB_BASE +
> +                       (0x200 * CONFIG_MXC_USB_PORT)));
>        return 0;
>  }

I am looking at the usb/host/ehci-mxc.c file and I see that the write
to the portsc USB register
is currently only done for MX31:

#ifdef CONFIG_MX31
	setbits_le32(&ehci->control, USB_EN);

	__raw_writel(CONFIG_MXC_USB_PORTSC, &ehci->portsc);
#endif

I think you need to allow the portsc register write on MX25 too (and
maybe for all i.MX devices).

In Linux we have: .portsc = MXC_EHCI_MODE_SERIAL for MX25PDK

,where #define MXC_EHCI_MODE_SERIAL            (3 << 30)

Regards,

Fabio Estevam