From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ezequiel Garcia Subject: Re: AM335x USB DMA seems broken on ISOC URBs Date: Mon, 20 Jan 2014 08:25:28 -0300 Message-ID: <20140120112527.GA10382@localhost> References: <20131222055945.GA7194@localhost> <20140117162723.GB3843@localhost> <52DA99D8.8010003@zonque.org> <52DD055C.1090806@zonque.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Content-Disposition: inline In-Reply-To: <52DD055C.1090806-cYrQPVfZoowdnm+yROfE0A@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Daniel Mack Cc: Felipe Balbi , Sebastian Andrzej Siewior , linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-omap@vger.kernel.org On Mon, Jan 20, 2014 at 12:15:40PM +0100, Daniel Mack wrote: > On 01/18/2014 04:12 PM, Daniel Mack wrote: > > On 01/17/2014 05:27 PM, Ezequiel Garcia wrote: > >> On Sun, Dec 22, 2013 at 02:59:45AM -0300, Ezequiel Garcia wrote: >=20 > >>> While doing some experiments with the stk1160 driver (for "Easyca= p" TV video > >>> capture devices), ran into problems using v3.13-rc4. The problem = is that the > >>> stk1160 IRQ handler receives no URBs at all. >=20 > [...] >=20 > > Let me know if you find anything - I hope to find some time to do > > similar tests on AM33xx based hardware. >=20 > I tried using an USB headset connected to a AM33xx based board, using > kernel v3.13. >=20 > The good news is that aplay gives me sound, so there's nothing genera= lly > wrong with isochronous streams on musb_dsps/cppi41. >=20 Hm.. interesting. I wonder what's the difference between those URBs and the video URBs involved in stk1160 operation. Maybe the size of each buffer transfered? Can anybody bring some light on this? --=20 Ezequiel Garc=C3=ADa, Free Electrons Embedded Linux, Kernel and Android Engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html