linux-kernel - Re: [PATCH v3 0/4] ARM: dts: Add USB host support for Panda and Beagle-xm

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Date:	Thu, 25 Apr 2013 08:34:17 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Roger Quadros <rogerq@...com>
Cc:	b-cousson@...com, nm@...com, paul@...an.com,
	linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org, "B, Ravi" <ravibabu@...com>
Subject: Re: [PATCH v3 0/4] ARM: dts: Add USB host support for Panda and
 Beagle-xm

* Roger Quadros <rogerq@...com> [130422 00:15]:
> On 04/19/2013 06:43 PM, Tony Lindgren wrote:
> > * Roger Quadros <rogerq@...com> [130419 03:02]:
> >> Hi Benoit/Tony
> >>
> >> I've consolidated all the USB host device tree patches for Panda and Beagles
> >> to one place and addressed Tony's comments.
> >>
> >> NOTE: patch 1 depends on OMAP clock binding introduced in
> >> https://lkml.org/lkml/2013/4/12/407
> >>
> >> v3:
> >> - updated mux mode to use pulldowns on panda as non-DT boot uses pulldowns.
> >> - fixed usb pin naming for panda, beagle and beagle-xm
> > 
> > Cool. Sounds like we should be able to make omap4 DT only for v3.11
> 
> when we say DT only for 3.11, does this mean getting rid of hwmod dependency?

That too, but mostly getting rid of the board-*.c files and platform data
init for omap4 :) So a saving of about 5000 lines of code and data
with the legacy mux data dropped. I have some patches to do that but have
not yet posted them as we need to get the boards working well enough
with DT first.
 
> > then. For that we also need USB on 4430-sdp working, but it now
> > does:
> > 
> > ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> > ehci-omap 4a064c00.ehci: failed to get phys phandle in /ocp/usbhshost@...64000/ehci@...64c00 node
> > ehci-omap 4a064c00.ehci: failed to get phys phandle in /ocp/usbhshost@...64000/ehci@...64c00 node
> > ...
> 
> 4430-sdp (Blaze) does not have EHCI USB Host port. It should be using the 
> MUSB OTG port.
> > 
> > As I have mine in a rack I don't have anything plugged into the
> > USB port there though, but sounds like the phy is not initialized?
> > 
> 
> +Ravi B.
> He might have some clues.

Yes please check.

Regards,

Tony
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