linux-kernel - Re: [PATCH v3 1/1] USB: cns3xxx: Add EHCI and OHCI bus glue for cns3xxx SOCs

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Message-ID: <20101125171541.GA18152@suse.de>
Date:	Thu, 25 Nov 2010 09:15:41 -0800
From:	Greg KH <gregkh@...e.de>
To:	Anton Vorontsov <cbouatmailru@...il.com>
Cc:	mkl0301@...il.com, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	dbrownell@...rs.sourceforge.net, linux-usb@...r.kernel.org
Subject: Re: [PATCH v3 1/1] USB: cns3xxx: Add EHCI and OHCI bus glue for
	cns3xxx SOCs

On Thu, Nov 25, 2010 at 07:21:58PM +0300, Anton Vorontsov wrote:
> On Thu, Nov 25, 2010 at 11:58:00PM +0800, mkl0301@...il.com wrote:
> > From: Mac Lin <mkl0301@...il.com>
> > 
> > The CNS3XXX SOC has include USB EHCI and OHCI compatible controllers. This
> > patch adds the necessary glue logic to allow ehci-hcd and ohci-hcd drivers to
> > work on CNS3XXX
> > 
> > The EHCI and OHCI controllers share a common clock control and reset bit,
> > therefore additional check for the timming of enabling and disabling is
> > required. The USB bit of PLL Power Down Control is also shared by OTG, 24MHz
> > UART clock, Crypto clock, PCIe reference clock, and Clock Scale Generator.
> > Therefore we only ensure it is enabled, while not disabling it.
> > 
> > Signed-off-by: Mac Lin <mkl0301@...il.com>
> 
> Thanks for the patch!
> 
> Cc'ing Greg.
> 
> Greg, the patch doesn't touch any sensitive parts of EHCI and OHCI
> drivers, can I take it via ARM subtree? This is to not introduce
> cross-tree dependencies (the patch depends on some arch-specific
> changes).

Please get Alan Stern to ack it as well, as he knows the proper
callbacks that you need to ensure are present.

thanks,

greg k-h
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