linux-kernel - Re: [PATCH 0/3] usb: chipidea: add one errata for revision 2.40a

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Message-ID: <20141222011840.GB9242@shlinux2>
Date:	Mon, 22 Dec 2014 09:18:44 +0800
From:	Peter Chen <peter.chen@...escale.com>
To:	Sanchayan Maity <maitysanchayan@...il.com>
CC:	<stefan@...er.ch>, <gregkh@...uxfoundation.org>,
	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/3] usb: chipidea: add one errata for revision 2.40a

On Fri, Dec 19, 2014 at 03:25:26PM +0530, Sanchayan Maity wrote:
> The first two patches add identification register API's. These can
> be used to get controller's revision. 
> 
> The third patch implements an errata for revision 2.40a. Not sure
> which other SOCs implement this version of the Chipidea core but
> this fixes the usb client issue observed on Vybrids. The patch was
> tested on a Toradex Colibri VF61 module with the 3.18 kernel. iperf
> tests ran for three hours plus, with these patches applied have found
> the USB client connection to be now reliable.

Would you help do a overnight test? It is passed, I will queue them,
thanks.

Peter
> 
> This patchset is based off on Shawn Guo's for-next branch
> https://git.kernel.org/cgit/linux/kernel/git/shawnguo/linux.git/tree/?h=for-next
> 
> The credit for the patches and fix goes to Matthieu Castet and Peter Chen.
> First two patches are by Peter Chen and the third patch which fixed the
> bug we observed was reported by Matthieu Castet.
> 
> The discussion of the problem and the relevant testing details can be found
> at this link: http://www.spinics.net/lists/linux-usb/msg118544.html
> 
> The first version of this patchset originally send by Peter Chen can be
> found at this link: http://www.spinics.net/lists/linux-usb/msg118753.html
> 
> Comments for review are welcome :).
> Note: I am going on a vacation so will not be able to reply or do any further
> tests till Monday. Will attend and take care of any comments/requests for 
> further changes/testing from Tuesday. Apologize for the delay in advance.
> 
> Sanchayan Maity (3):
>   usb: chipidea: Add identification registers access APIs
>   usb: chipidea: Add chipidea revision information
>   usb: chipidea: Add errata for revision 2.40a
> 
>  drivers/usb/chipidea/bits.h |   10 ++++++++
>  drivers/usb/chipidea/ci.h   |   53 +++++++++++++++++++++++++++++++++++++++++++
>  drivers/usb/chipidea/core.c |   23 +++++++++++++++++--
>  drivers/usb/chipidea/udc.c  |   20 ++++++++++++++++
>  4 files changed, 104 insertions(+), 2 deletions(-)
> 
> -- 
> 1.7.9.5
> 

-- 

Best Regards,
Peter Chen
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