Re: USB ehci suspend/resume on beagleboard
On Thu, Apr 4, 2013 at 2:50 PM, Roger Quadros rog...@ti.com wrote: correcting misleading subject line. was (Re: MUSB regression in linux next at least for pandboard) On 04/04/2013 02:36 PM, Roger Quadros wrote: Hi, On 02/07/2013 04:10 PM, Grazvydas Ignotas wrote: On Thu, Feb 7, 2013 at 11:16 AM, Roger Quadros rog...@ti.com wrote: snip It seems the beagleboard problem is related to OMAP silicon errata [1]. Apparently, remote wakeup as well as host issued wakeup break omap-ehci and have nothing to do with the hub or it's driver. I'll work on this issue after I'm done with device tree migration. Looking forward to this, mainline has been suffering from this since almost forever.. Unfortunately, there is another errata [2] that makes it impossible to support suspend/resume on the beagleboard. You could fix it for BeagleBoard-xM at least, I think it is not affected by this as it has DM3730 (only early revisions with 1.0 silicon of that are affected with [2]). This would also fix it for DM3730-based pandoras. cheers, -roger [2] Advisory 3.1.1.195 HSUSB Interoperability Issue With SMSC USB3320 PHY http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=sprz278ffileType=pdf -- GraÅžvydas -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: USB ehci suspend/resume on beagleboard
On 04/05/2013 02:11 PM, Grazvydas Ignotas wrote: On Thu, Apr 4, 2013 at 2:50 PM, Roger Quadros rog...@ti.com wrote: correcting misleading subject line. was (Re: MUSB regression in linux next at least for pandboard) On 04/04/2013 02:36 PM, Roger Quadros wrote: Hi, On 02/07/2013 04:10 PM, Grazvydas Ignotas wrote: On Thu, Feb 7, 2013 at 11:16 AM, Roger Quadros rog...@ti.com wrote: snip It seems the beagleboard problem is related to OMAP silicon errata [1]. Apparently, remote wakeup as well as host issued wakeup break omap-ehci and have nothing to do with the hub or it's driver. I'll work on this issue after I'm done with device tree migration. Looking forward to this, mainline has been suffering from this since almost forever.. Unfortunately, there is another errata [2] that makes it impossible to support suspend/resume on the beagleboard. You could fix it for BeagleBoard-xM at least, I think it is not affected by this as it has DM3730 (only early revisions with 1.0 silicon of that are affected with [2]). This would also fix it for DM3730-based pandoras. Yes you are right. I need to get a beagleboard-xM. cheers, -roger [2] Advisory 3.1.1.195 HSUSB Interoperability Issue With SMSC USB3320 PHY http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=sprz278ffileType=pdf -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
USB ehci suspend/resume on beagleboard
correcting misleading subject line. was (Re: MUSB regression in linux next at least for pandboard) On 04/04/2013 02:36 PM, Roger Quadros wrote: Hi, On 02/07/2013 04:10 PM, Grazvydas Ignotas wrote: On Thu, Feb 7, 2013 at 11:16 AM, Roger Quadros rog...@ti.com wrote: snip It seems the beagleboard problem is related to OMAP silicon errata [1]. Apparently, remote wakeup as well as host issued wakeup break omap-ehci and have nothing to do with the hub or it's driver. I'll work on this issue after I'm done with device tree migration. Looking forward to this, mainline has been suffering from this since almost forever.. Unfortunately, there is another errata [2] that makes it impossible to support suspend/resume on the beagleboard. cheers, -roger [2] Advisory 3.1.1.195 HSUSB Interoperability Issue With SMSC USB3320 PHY http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=sprz278ffileType=pdf -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
