Date: Fri, 02 May 2014 18:00:51 +0200 From: Hans Petter Selasky <hps@selasky.org> To: Johny Mattsson <johny.mattsson+fbsd@gmail.com>, freebsd-arm@freebsd.org Subject: Re: USB audio device on Raspberry Pi - link_elf: symbol isa_dmastatus undefined Message-ID: <5363C133.2000304@selasky.org> In-Reply-To: <5362638B.1080104@selasky.org> References: <20140425154430.GA76168@utility-01.thismonkey.com> <535A8AEA.1000100@selasky.org> <20140425204134.GA458@cicely7.cicely.de> <20140430091411.GA45015@utility-01.thismonkey.com> <5360C0A7.9010407@selasky.org> <1398867266.22079.51.camel@revolution.hippie.lan> <CAGW5k5bZ_bTQUXuzNm=tbwx3npz1_HoOR3vM8TBRVFs8zWCq-w@mail.gmail.com> <5362638B.1080104@selasky.org>
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On 05/01/14 17:08, Hans Petter Selasky wrote: > On 05/01/14 01:34, Johny Mattsson wrote: >> On 1 May 2014 00:14, Ian Lepore <ian@freebsd.org> wrote: >> >>> I was doing some testing on a wandboard (about twice as fast an an rpi) >>> with >>> more than 20k int/sec without having any problems. >>> >> >> On a similar note, I've pushed an i.MX 283 (400MHz) board to above 300k >> int/sec, on Linux. Admittedly at that point my shell wasn't what you'd >> call >> "responsive" however =) The ISR in that scenario was the GPIO handler, so >> probably a bit more light-weight than an audio ISR. > > Hi, > > I'll have a look and see if I can fix it. > > --HPS Hi, Here is a patch (work in progress) which you can try: http://home.selasky.org:8192/dwc_otg_isoc_support_wip.diff Still not working 100% reliable. Trying to figure out the last bits and pieces. --HPS
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