[PATCH v4 0/7] ARM: mx28: add usb host function

s.hauer at pengutronix.de s.hauer at pengutronix.de
Fri Aug 5 09:03:01 EDT 2011


On Fri, Aug 05, 2011 at 07:53:21AM +0000, Lin Tony-B19295 wrote:
> Any comments for the patch series?

Yes. The way you handle the USB phys is totally inacceptable. Please
understand that there are *two* devices, one is the ehci core and the
other is the associated phy.

You need to register the phy as a platform device, the corresponding
driver then has to register the phy using some kind of usb_transceiver_register().
On the ehci side the mxc-ehci driver has to find its phy using
usb_get_transceiver().

Note that the infrastructure needed for this is not in the kernel, but
there are patches recently posted on linux-usb:

http://www.spinics.net/lists/linux-usb/msg50148.html

Sascha

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