[PATCH 1/2] ARM: dts: imx51-babbage: Add USB Host1 support

[Fabio Estevam]

Hi Peter,

On Thu, Mar 27, 2014 at 12:20 AM, Peter Chen <Peter.Chen at freescale.com> wrote:

> The ulpi phy driver still has not device tree version, so you can't
> find related driver.
>
> So, the default ulpi configuration at imx5-bbg board (3317 ulpi phy on it)
> works fine according to you and Fabio's test.
> The current situation is: nop phy driver can be used due to default configuration
> can be used. But in fact, your phy at host 1 is ulpi, but ulpi driver is lack of
> device tree support.
>
> Let Shawn decide whether it can be accept or not.

>From drivers/usb/phy/phy-generic.c:

" * NOP USB transceiver for all USB transceiver which are either built-in
 * into USB IP or which are mostly autonomous."

The USB PHY 3317 falls into the 'mostly automous', so that's why it
works fine with this driver.

mx27 also uses 'usb-nop-xceiv' on the ULPI PHY, so I don't see any
issue in doing the same for mx51.

I have sent a v2 for this series.

Regards,

Fabio Estevam