[U-Boot] [PATCH 3/3] M28: Disable USB power on boot

[Fabio Estevam]

On Wed, May 23, 2012 at 8:53 AM, Marek Vasut <marex at denx.de> wrote:

> Dang, this must be related to bootrom somehow then. Fabio, can you confirm the
> following:
>
> If you turn off the mx28 board, connect usb flashdisc, turn it on -- do you see
> the flashdisc led blinking? Any idea what might cause it? This patch forced the
> VBUS off, so very early in uboot, the USB flash has no way to blink (unless
> there's some surge).

I have just tried it on my mx28evk and I don't see the USB thumb LED to turn on.

Only if I do a "usb reset" that it turns on. Doing a "usb stop" turns
it off as expected.

I would suggest you to compare your USB circuitry  against mx28evk schematics.

Regards,

Fabio Estevam