linux-kernel - Re: [PATCH v3 6/7] USB: ohci-at91: add usb_clk for transition to common clk framework

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Date:	Wed, 17 Jul 2013 12:17:24 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	boris brezillon <b.brezillon@...rkiz.com>
cc:	Nicolas Ferre <nicolas.ferre@...el.com>,
	Ludovic Desroches <ludovic.desroches@...el.com>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>
Subject: Re: [PATCH v3 6/7] USB: ohci-at91: add usb_clk for transition to
 common clk framework

On Wed, 17 Jul 2013, boris brezillon wrote:

> On 17/07/2013 17:33, Alan Stern wrote:
> > On Tue, 16 Jul 2013, Boris BREZILLON wrote:
> >
> >> The AT91 PMC (Power Management Controller) provides an USB clock used by
> >> USB Full Speed host (ohci) and USB Full Speed device (udc).
> >> The usb drivers (ohci and udc) must configure this clock to 48Mhz.
> >> This configuration was formely done in mach-at91/clock.c, but this
> >> implementation will be removed when moving to common clk framework.
> >>
> >> This patch add support for usb clock retrieval and configuration, and is
> >> backward compatible with the current at91 clk implementation (if usb clk
> >> is not found, it does not configure/enable the usb clk).
> > This does not take into account any of the changes you discussed with
> > Russell King and me -- it is exactly the same as the previous version.
> Sorry, I don't understand. I didn't send any new version since yesterday.

Oh.  Never mind.  That message was the _same_ one that I replied to
yesterday.  I got two copies of it, because you sent it both to me
directly and to linux-usb.  For some reason one of the copies was
delayed for many hours, so I thought it was a new message.

Alan Stern

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