[U-Boot] Turn on USB PHY clock

[Markus Rathgeb]

Hello!

The UDOO quad board support is part of your bootloader.
I've set up a board with U-Boot and linux kernel 3.15-rc7.
To get USB support I used the linux kernel patches of Fabio Estevam,
that you could found here
http://comments.gmane.org/gmane.linux.usb.general/98041.
I changed them a little bit, to get them applied to the recent kernel.

When I informed me of the progress to include the linux patch
mainline, I learned, that the PHY clock should be enabled in the
bootloader.

Could you help me / give me some hint, how to turn on the USB PHY
clock in the bootloader for the UDOO quad board?

Is there some similar approach for other boards?

Best regards,
Markus Rathgeb