[beagleboard] Kernel 3.8 USB host problem
Hi All, For our own development board we face an issue regarding the USB host controller. We applied al the patches from Robert C Nelson s tree, also regarding the USB host issues on the beagleboard. Our compiled kernel does work on the Beagleboard with USB host, but on our own proto board (wich is different ofcourse compared to the BB but has exactly the same schematical connection for the USB connectors) we cannot get it working (Same Binary so Same Kernel Config). Now we tried kernel 3.12 from the RobertCNelson tree, and supprisingly USB is working on the BB, but also on our Proto board! I generated a lot of kernel debugging on the OMAP Registers (control module, USBSS, USB0 Core USB1 Core etc..) and posted them on Pastebin (See Links); Kernel 3.8 (Not working): http://pastebin.com/HaAb0U9Y Kernel 3.12 (Working): http://pastebin.com/mSuy4UrM So what we see is some differences in register values, but we dont really know if they are meaningfull regarding our project. and also we printed the entire memory region of the USB0 Core and the USB1 Core, but these are IP protected by TI so the defintion of these registers are not known to us. If anybody has any clue on how to proceed please let us know! As mentioned before on this forum we got the SGX drivers working for 3.8 so we are not that eager on jumping over to 3.12 directly, knowing what issues kernel version change can have. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] Kernel 3.8 USB host problem
On Fri, Feb 7, 2014 at 7:47 AM, stefboerrig...@gmail.com wrote: Hi All, For our own development board we face an issue regarding the USB host controller. We applied al the patches from Robert C Nelson s tree, also regarding the USB host issues on the beagleboard. Our compiled kernel does work on the Beagleboard with USB host, but on our own proto board (wich is different ofcourse compared to the BB but has exactly the same schematical connection for the USB connectors) we cannot get it working (Same Binary so Same Kernel Config). Now we tried kernel 3.12 from the RobertCNelson tree, and supprisingly USB is working on the BB, but also on our Proto board! I generated a lot of kernel debugging on the OMAP Registers (control module, USBSS, USB0 Core USB1 Core etc..) and posted them on Pastebin (See Links); Kernel 3.8 (Not working): http://pastebin.com/HaAb0U9Y Kernel 3.12 (Working): http://pastebin.com/mSuy4UrM In these last few kernel releases the mainline omap-ehci driver had been rewritten, which caused a little pain between kernel versions.. Plus the sprz319_erratum_v2.1 workaround is enabled by default in 3.12 in our patchset (omap36xx based devices).. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
