Date: Thu, 20 Dec 2018 17:09:33 -0800 From: bob prohaska <fbsd@www.zefox.net> To: Oleksandr Tymoshenko <gonzo@bluezbox.com> Cc: Brian Scott <bscott@bunyatech.com.au>, Jamie Landeg-Jones <jamie@catflap.org>, Jan Beich <jbeich@freebsd.org>, freebsd-arm@freebsd.org Subject: Re: RPI3 sound for www/chromium, was Re: How much memory to compile www/chromium? Message-ID: <20181221010933.GB51899@www.zefox.net> In-Reply-To: <20181220213152.GA14086@bluezbox.com> References: <20181212202504.4n3mhtx7grbeh6j7@squirrel.exwg.net> <20181214012733.GA92808@www.zefox.net> <bm5o-wvo6-wny@FreeBSD.org> <20181218174903.GA41072@www.zefox.net> <201812182341.wBINfiX4052421@donotpassgo.dyslexicfish.net> <20181219014342.GA42859@www.zefox.net> <r2ee-rrpq-wny@FreeBSD.org> <233863b5-f748-2c2e-976f-110ab49e4675@bunyatech.com.au> <20181220185601.GA51899@www.zefox.net> <20181220213152.GA14086@bluezbox.com>
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On Thu, Dec 20, 2018 at 01:31:52PM -0800, Oleksandr Tymoshenko wrote: > bob prohaska (fbsd@www.zefox.net) wrote: > > On Wed, Dec 19, 2018 at 05:14:07PM +1100, Brian Scott wrote: > > > > > > I believe the problem now is that support for builtin sound on the RPI3 > > > is still a work in progress (it goes through the HDMI subsystem and I > > > think it was a 32 vs. 64 bit issue but is a mystery to me beyond that). > > > > > > > I infer that sound is only a distant murmur on the Pi3..... > > > > 8-) > > > > Thanks for the clarification! > > Well, it's a bit more than murmur but still nowhere near where it should > be. Year ago I spent some time trying to make it work here is the latest > WIP patch: > https://people.freebsd.org/~gonzo/arm/patches/vchiq-wip-20180217.diff > > The audio does play for a short while and then locks up and since there > is no way to know what happens on the VideoCore side the debugging > becomes a bit problematic. > I didn't realize that sound was part of the GPU. Which begs another question: A couple (or more) years ago there was much ballyhoo about Broadcom "opening up" the VideoCore4 documentation, supposedly to better support open source development of high performance graphics drivers. The only example I can find right now is https://ia800408.us.archive.org/30/items/pdfy-rXdEJ1TyaZLR_L12/VideoCoreIV-AG100-R.pdf but there might be others. This particular example doesn't mention sound or audio. Did it do any good? The foregoing discussion seems to suggest it didn't. Thanks for writing! bob prohaska
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