Hi, > -----Original Message----- > From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb- > owner@xxxxxxxxxxxxxxx] On Behalf Of Felipe Balbi > Sent: Tuesday, April 06, 2010 9:09 PM > To: Gadiyar, Anand > Cc: Balbi Felipe (Nokia-D/Helsinki); ext Cai, Cliff; Mike Frysinger; > linux-usb@xxxxxxxxxxxxxxx; uclinux-dist-devel@xxxxxxxxxxxxxxxxxxxx; Greg > Kroah-Hartman; Subbrathnam, Swaminathan > Subject: Re: [PATCH 2/2 v2] USB: musb: disable double buffering for older > RTL versions > > On Tue, Apr 06, 2010 at 01:46:29PM +0200, ext Gadiyar, Anand wrote: > >With g_zero, do you see a hang or do you have data corruption? > > data corruption. But with our internal mode1 changes, we can use double > buffering with rtl1.8 on omap36xx, so at least rtl1.8 can work. Felipe, Have you ensured using either first 8K or second 8K of FIFO space in your double buffering tests for OMAP35x? I think you are aware of a known issue on OMAP35x where two active endpoints have to use FIFO either in first 8K or next 8K range. I think double buffering data corruption issue is linked to this known issue and can be avoided if we use FIFO space of first 8K or next 8K. Ajay > > -- > balbi > -- > 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 -- 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
