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Date: Wed, 24 Dec 2014 16:42:04 +0100 From: Stefan Agner <stefan@...er.ch> To: Peter Chen <peter.chen@...escale.com> Cc: Sanchayan Maity <maitysanchayan@...il.com>, 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 2014-12-22 02:18, Peter Chen wrote: > 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. > Hi Peter, Also did a short test on 3.19-rc1 here: # iperf -s ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 85.3 KByte (default) ------------------------------------------------------------ [ 4] local 192.168.1.10 port 5001 connected with 192.168.1.1 port 53241 [ ID] Interval Transfer Bandwidth [ 4] 0.0-10.0 sec 152 MBytes 127 Mbits/sec [ 5] local 192.168.1.10 port 5001 connected with 192.168.1.1 port 53243 [ 8] local 192.168.1.10 port 5001 connected with 192.168.1.1 port 53247 [ 7] local 192.168.1.10 port 5001 connected with 192.168.1.1 port 53246 [ 6] local 192.168.1.10 port 5001 connected with 192.168.1.1 port 53245 [ 4] local 192.168.1.10 port 5001 connected with 192.168.1.1 port 53244 [ 6] 0.0-10.1 sec 30.9 MBytes 25.7 Mbits/sec [ 5] 0.0-10.1 sec 30.9 MBytes 25.7 Mbits/sec [ 7] 0.0-10.1 sec 30.9 MBytes 25.7 Mbits/sec [ 8] 0.0-10.1 sec 30.9 MBytes 25.6 Mbits/sec [ 4] 0.0-10.1 sec 30.9 MBytes 25.7 Mbits/sec [SUM] 0.0-10.1 sec 154 MBytes 128 Mbits/sec Tried also UDP mode and scp copies as well as adding some kernel level latencies by pluging and unpluging a USB mass storage device. Looks good to me as well: Tested-by: Stefan Agner <stefan@...er.ch> Btw, this was and solves now the error I was mentioning in my patchset enabling Vybrid support: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-July/274342.html @Sanchayan/Peter: Minor nits as reply to the actual patch emails. -- Stefan > 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 >> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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