Date: Mon, 5 May 2014 16:47:05 +0200 From: Bernd Walter <ticso@cicely7.cicely.de> To: Hans Petter Selasky <hps@selasky.org> Cc: freebsd-arm@freebsd.org, Matthias Meyser <meyser@xenet.de> Subject: Re: USB audio device on Raspberry Pi - link_elf: symbol isa_dmastatus undefined Message-ID: <20140505144704.GA78493@cicely7.cicely.de> In-Reply-To: <5367A154.8010508@selasky.org> References: <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> <5363C133.2000304@selasky.org> <5367973F.20300@xenet.de> <5367A154.8010508@selasky.org>
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On Mon, May 05, 2014 at 04:33:56PM +0200, Hans Petter Selasky wrote: > On 05/05/14 15:50, Matthias Meyser wrote: > > > >Am 02.05.2014 18:00, schrieb Hans Petter Selasky: > >>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. > >>> > >>>I'll have a look and see if I can fix it. > >>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. > > > >For testing it would be very helful if someone could add > > > >device sound > >device snd_uaudio > > > >to RPI-B kernel. > > > >Having this in BEAGLEBONE would be nice to. > >Perhaps this schould go in every config that supports usb. > > > > Hi, > > The following patch should make "devd" load sound.ko and snd_uaudio.ko > automatically: > > http://svnweb.freebsd.org/changeset/base/265359 This won't work unless sound.ko especting ISA in ARM kernel is fixed as well. -- B.Walter <bernd@bwct.de> http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
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