[PATCH 00/13] Device tree support for OMAP HS USB Host

On 02/05/2013 01:25 PM, Rajendra Nayak wrote:

On Monday 04 February 2013 09:28 PM, Roger Quadros wrote:

quoted

This patchset adds device tree support for OMAP's High Speed USB Host
subsystem. Board adaptation for Panda and Beagleboard is also provided.

Tested on Beagleboard.

Will only work with Panda if we provide a reference to the PHY clock

But there is no reference provided even for Beagle. Does it work because
the default clk speed is 192Mhz?

On beagle board the PHY is connected differently, i.e. as the clock receptor.
The PHY clock comes directly from the USB_CLK pin.

On Panda the PHY is the clock provider to the USB_CLK pin. For that it needs
a reference clock at the REFCLK pin which comes from FREF_CLK3.

quoted

generator in the device tree in PATCH 11. I do not know how to do that
as there is no way to provide a phandle to any of the OMAP generated clocks
in the device tree. Suggestions welcome:).

cheers,
-roger