On 16 March 2012 14:55, Mans Rullgard <mans.rullg...@linaro.org> wrote:
> On 16 March 2012 12:36, Sangwook Lee <sangwook....@linaro.org> wrote: > > Hi Mans > > > > On 16 March 2012 11:50, Mans Rullgard <mans.rullg...@linaro.org> wrote: > >> > >> On 16 March 2012 04:14, Sachin Kamat <sachin.ka...@linaro.org> wrote: > >> > Hi, > >> > > >> > On 15/03/2012, Mans Rullgard <mans.rullg...@linaro.org> wrote: > >> >> On 14 March 2012 20:04, Jannis Pohlmann > >> >> <jannis.pohlm...@codethink.co.uk> > >> >> wrote: > >> >>> Hi, > >> >>> > >> >>> I am currently playing with a couple of the development boards for > >> >>> which > >> >>> there are Linaro hwpacks and LEBs. Since what I am trying to do > >> >>> requires > >> >>> a lot of disk and network I/O, I've been paying special attention to > >> >>> the > >> >>> data transfer rates I can get out of these boards. > >> >>> > >> >>> Below is a brief summary of my findings. > >> >>> > >> >>> 3) Origen > >> >>> > >> >>> * the internal USB hub runs at Full Speed (12 MBit/s), resulting > in a > >> >>> maximum USB disk I/O of 1.5 MByte/s > >> >>> > >> >>> * since the board does not feature Ethernet itself, I tried to > attach > >> >>> a USB Ethernet controller to it, but of course the transfer rate > >> >>> through that is by the I/O upper limit of the USB hub > >> >>> > >> >>> * I did not test wireless but it is not feasible for what I am > trying > >> >>> to do anyway > >> >> > >> >> Which kernel version are you using on the Origen? I noticed the same > >> >> problem > >> >> a while back, but it appears to have been fixed in the Samsung > landing > >> >> team > >> >> tree. There is still another bug present in the Origen kernel > >> >> preventing > >> >> USB-ethernet working with EHCI. Some patches have been posted, but > >> >> they > >> >> have not made it into the trees yet. > >> > > >> > These patches have been added to Samsung LT tree [1]. > >> > > >> > [1] git://git.linaro.org/landing-teams/working/samsung/kernel.git > >> > (branch: tracking) > >> > >> That branch still needs one more patch (attached). > >> > > Thanks for looking at this git. > > > > Initially I submitted patches with the call-back function > > http://www.spinics.net/lists/linux-usb/msg59212.html > > > > But maintainers don't like to use call-back function, and it was > rejected. > > So Now LT doesn't to use this call-back function > > Yes, I saw that, but the tracking branch in git still has the incomplete > callback version. > > You're right. @Tushar, we need to apply Mans's patch as well. Thanks Mans! > -- > Mans Rullgard / mru >
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