>-----Original Message----- >From: vapier.adi@xxxxxxxxx [mailto:vapier.adi@xxxxxxxxx] On >Behalf Of Mike Frysinger >Sent: Wednesday, November 24, 2010 10:37 AM >To: Bob Liu; Zhang, Sonic; uclinux-dist-devel@xxxxxxxxxxxxxxxxxxxx >Cc: Ajay Kumar Gupta; linux-usb@xxxxxxxxxxxxxxx; balbi@xxxxxx >Subject: Re: [PATCH] musb_host: Fix high bandwidth iso transfer issue > >On Tue, Nov 23, 2010 at 06:15, Felipe Balbi wrote: >> On Tue, Nov 23, 2010 at 03:31:34PM +0530, Ajay Kumar Gupta wrote: >>> Commit 9f445cb [USB: musb: disable double buffering for older RTL >>> versions] is breaking the high bandwidth isochronous transfer as >>> hb_mult is not getting programmed into RXMAXP register. >>> >>> Signed-off-by: Ajay Kumar Gupta <ajay.gupta@xxxxxx> >> >> I'll take this one in. >> >> Mike, we need to get blackfin double buffering issue sorted out as >> these blackfin hacks are breaking other functionalities. > The blackfin double buffering issue is a hardware anomaly 05000465 in blackfin implementation. Please refer to the blackfin anomaly list http://www.analog.com/static/imported-files/ic_anom/BF_523_525_527_527C_anomaly_RevH.pdf and http://www.analog.com/static/imported-files/ic_anom/ADSP-BF542_544_547_548_549_revJ.pdf The only work around is to config the receive FIFO into single buffer mode. Sonic >bouncing it over ... >-mike > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
