RE: [PATCH] staging: dwc2: set up all module params

2013-11-27 Thread Paul Zimmerman
dead.org > Subject: Re: [PATCH] staging: dwc2: set up all module params > > This looks like it is the same problem we saw in the dwc_otg driver > with incorrect scheduling of split USB transactions to downstream > ports behind single TT hubs (this just makes the problem worse rathe

RE: [PATCH] staging: dwc2: set up all module params

2013-11-27 Thread Paul Zimmerman
> To: Stephen Warren > > Cc: Paul Zimmerman; Greg Kroah-Hartman; de...@driverdev.osuosl.org; > > linux-rpi- > > ker...@lists.infradead.org > > Subject: Re: [PATCH] staging: dwc2: set up all module params > > > > This looks like it is the same problem we saw in the d

Re: [PATCH] staging: dwc2: set up all module params

2013-11-27 Thread Martin Sperl
On 27.11.2013, at 07:47, Gordon Hollingworth wrote: > In general it should be possible to schedule multiple split > transactions to a TT but they _must_ be completed on time or the hub > will drop the transactions on the floor... Unfortunately because of > the interrupt latency issues it cannot be

Re: [PATCH] staging: dwc2: set up all module params

2013-11-26 Thread Gordon Hollingworth
This looks like it is the same problem we saw in the dwc_otg driver with incorrect scheduling of split USB transactions to downstream ports behind single TT hubs (this just makes the problem worse rather than be the cause of anything) In general it should be possible to schedule multiple split tra

Re: [PATCH] staging: dwc2: set up all module params

2013-11-26 Thread Stephen Warren
(trimming out the devicetree list and maintainers for this discussion) On 11/26/2013 12:52 PM, Paul Zimmerman wrote: >> From: Stephen Warren [mailto:swar...@wwwdotorg.org] >> Sent: Tuesday, November 26, 2013 11:43 AM >> >> On 11/26/2013 12:27 PM, Paul Zimmerman wrote: From: Stephen Warren [ma

RE: [PATCH] staging: dwc2: set up all module params

2013-11-26 Thread Paul Zimmerman
> From: Stephen Warren [mailto:swar...@wwwdotorg.org] > Sent: Tuesday, November 26, 2013 11:43 AM > > On 11/26/2013 12:27 PM, Paul Zimmerman wrote: > >> From: Stephen Warren [mailto:swar...@wwwdotorg.org] > >> Sent: Monday, November 25, 2013 9:03 PM > >> > >> The DWC2 USB controller in the BCM2835

Re: [PATCH] staging: dwc2: set up all module params

2013-11-26 Thread Stephen Warren
On 11/26/2013 12:27 PM, Paul Zimmerman wrote: >> From: Stephen Warren [mailto:swar...@wwwdotorg.org] >> Sent: Monday, November 25, 2013 9:03 PM >> >> The DWC2 USB controller in the BCM2835 (Raspberry Pi) needs some non- >> default parameters. Select these based on the compatible value from the >> D

RE: [PATCH] staging: dwc2: set up all module params

2013-11-26 Thread Paul Zimmerman
> From: Stephen Warren [mailto:swar...@wwwdotorg.org] > Sent: Monday, November 25, 2013 9:03 PM > > The DWC2 USB controller in the BCM2835 (Raspberry Pi) needs some non- > default parameters. Select these based on the compatible value from the > DT node. For all other HW, fall back to the default

Re: [PATCH] staging: dwc2: set up all module params

2013-11-26 Thread Andre Heider
On Mon, Nov 25, 2013 at 10:02:30PM -0700, Stephen Warren wrote: > The DWC2 USB controller in the BCM2835 (Raspberry Pi) needs some non- > default parameters. Select these based on the compatible value from the > DT node. For all other HW, fall back to the default parameters currently > in use. > >