Re: Chipidea USB controller hangs in peripheral mode under high memory bus pressure

2017-05-15 Thread Laurent Pinchart
Hi Thomas, On Monday 08 May 2017 04:42:59 Thomas Entner / EE wrote: > Am 08.05.2017 um 03:56 schrieb Peter Chen: > > On Fri, May 05, 2017 at 04:10:14PM +0200, Thomas Entner / EE wrote: > >> Am 05.05.2017 um 14:56 schrieb Thomas Entner / EE: > >>> Hi, I am Thomas who contacted Laurent regarding thi

Re: Chipidea USB controller hangs in peripheral mode under high memory bus pressure

2017-05-09 Thread Peter Chen
On Tue, May 09, 2017 at 11:47:07AM +0200, Thomas Entner / EE wrote: > > Am 08.05.2017 um 03:56 schrieb Peter Chen: > >On Fri, May 05, 2017 at 04:10:14PM +0200, Thomas Entner / EE wrote: > >>>When we reduce the max packet size to 256, things appear to work stable > >>>(but very slow). > >>> > >>>Wh

Re: Chipidea USB controller hangs in peripheral mode under high memory bus pressure

2017-05-09 Thread Thomas Entner / EE
Am 08.05.2017 um 03:56 schrieb Peter Chen: On Fri, May 05, 2017 at 04:10:14PM +0200, Thomas Entner / EE wrote: When we reduce the max packet size to 256, things appear to work stable (but very slow). When we use a max packet size of 720 we still see lock-ups (which is a bit of surprise to me,

Re: Chipidea USB controller hangs in peripheral mode under high memory bus pressure

2017-05-07 Thread Thomas Entner / EE
Am 08.05.2017 um 03:56 schrieb Peter Chen: On Fri, May 05, 2017 at 04:10:14PM +0200, Thomas Entner / EE wrote: Am 05.05.2017 um 14:56 schrieb Thomas Entner / EE: Hi, I am Thomas who contacted Laurent regarding this issue. We have some further observations: Am 04.05.2017 um 08:45 schrieb Peter

Re: Chipidea USB controller hangs in peripheral mode under high memory bus pressure

2017-05-07 Thread Peter Chen
On Fri, May 05, 2017 at 04:10:14PM +0200, Thomas Entner / EE wrote: > Am 05.05.2017 um 14:56 schrieb Thomas Entner / EE: > >Hi, I am Thomas who contacted Laurent regarding this issue. We have some > >further observations: > >Am 04.05.2017 um 08:45 schrieb Peter Chen: > >>On Wed, May 03, 2017 at 01:

Re: Chipidea USB controller hangs in peripheral mode under high memory bus pressure

2017-05-05 Thread Thomas Entner / EE
Am 05.05.2017 um 14:56 schrieb Thomas Entner / EE: Hi, I am Thomas who contacted Laurent regarding this issue. We have some further observations: Am 04.05.2017 um 08:45 schrieb Peter Chen: On Wed, May 03, 2017 at 01:32:28PM +0300, Laurent Pinchart wrote: There was no one reported this problem b

Re: Chipidea USB controller hangs in peripheral mode under high memory bus pressure

2017-05-05 Thread Thomas Entner / EE
Hi, I am Thomas who contacted Laurent regarding this issue. We have some further observations: Am 04.05.2017 um 08:45 schrieb Peter Chen: On Wed, May 03, 2017 at 01:32:28PM +0300, Laurent Pinchart wrote: There was no one reported this problem before, but from the description, it seems an IC iss

Re: Chipidea USB controller hangs in peripheral mode under high memory bus pressure

2017-05-03 Thread Peter Chen
On Wed, May 03, 2017 at 01:32:28PM +0300, Laurent Pinchart wrote: > > > > There was no one reported this problem before, but from the description, > > it seems an IC issue which is triggered at high loading memory bus, > > controller may not get time to visit memory at limited time. > > That's my

Re: Chipidea USB controller hangs in peripheral mode under high memory bus pressure

2017-05-03 Thread Laurent Pinchart
Hi Peter, On Wednesday 03 May 2017 11:10:55 Peter Chen wrote: > On Tue, May 02, 2017 at 03:07:03PM +0300, Laurent Pinchart wrote: > > Hello, > > > > I ran into an issue with a Xilinx Zynq XC7Z010 system. The system acts as > > a USB peripheral, using the UVC gadget driver. > > > > When transferr

Re: Chipidea USB controller hangs in peripheral mode under high memory bus pressure

2017-05-03 Thread Laurent Pinchart
Hi Peter, Thank you for your quick reply. On Wednesday 03 May 2017 11:10:55 Peter Chen wrote: > On Tue, May 02, 2017 at 03:07:03PM +0300, Laurent Pinchart wrote: > > Hello, > > > > I ran into an issue with a Xilinx Zynq XC7Z010 system. The system acts as > > a USB peripheral, using the UVC gadge

Re: Chipidea USB controller hangs in peripheral mode under high memory bus pressure

2017-05-02 Thread Peter Chen
On Tue, May 02, 2017 at 03:07:03PM +0300, Laurent Pinchart wrote: > Hello, > > I ran into an issue with a Xilinx Zynq XC7Z010 system. The system acts as a > USB peripheral, using the UVC gadget driver. > > When transferring high bandwidth data over USB in isochronous mode, complete > system fre

Re: Chipidea USB controller hangs in peripheral mode under high memory bus pressure

2017-05-02 Thread Laurent Pinchart
On Tuesday 02 May 2017 15:07:03 Laurent Pinchart wrote: > Hello, > > I ran into an issue with a Xilinx Zynq XC7Z010 system. The system acts as a > USB peripheral, using the UVC gadget driver. > > When transferring high bandwidth data over USB in isochronous mode, complete > system freezes are occ