Re: [PATCH] Experimental vchiq and bcm2835_audio support for arm64
Date: Tue, 08 Feb 2022 08:49:10 UTC
Van: Ronald Klop <ronald-lists@klop.ws> Datum: maandag, 7 februari 2022 21:05 Aan: Marco Devesas Campos <devesas.campos@gmail.com>, freebsd-arm@freebsd.org Onderwerp: Re: [PATCH] Experimental vchiq and bcm2835_audio support for arm64 > > On 2/6/22 14:46, Marco Devesas Campos wrote: > > Hi Ronald, > > > > Thanks so much for trying out the patch out. > > > >> On 6 Feb 2022, at 13:05, Ronald Klop <ronald-lists@klop.ws> wrote: > >> > >> Hi, > >> > >> I compiled this on a RPI4 + 14-CURRENT. It boots, but I see no difference in available devices. > >> I can try to boot it on a RPI3B+ on another time. > > > > I *think* the GPU/VC in RPI-4 is a very different beast from the others. I'll > > look into it, but if you could give it a try on the 3+ I'd be much obliged. > > > >> > >> What would be the expected outcome? Where should I look at (or listen to)? > >> > > > > You should see something like > > > > vchiq0: <BCM2835 VCHIQ> mem 0x7e00b840-0x7e00b87b irq 54 on simplebus0 > > vchiq: local ver 8 (min 3), remote ver 8. > > pcm0: <VCHIQ audio> on vchiq0 > > > > in your dmesg output. > > > > The file /dev/vchiq should exist, as well as the following sysctl-s (I'm > > assuming no other audio devices are attached) > > > > % sysctl dev.pcm > > dev.pcm.0.trace: 0 > > ... > > dev.pcm.0.dest: 0 > > ... > > dev.pcm.0.%parent: vchiq0 > > ... > > dev.pcm.0.%driver: pcm > > dev.pcm.0.%desc: VCHIQ audio > > … > > > > Then if you `cat < /dev/random > /dev/dsp` you should hear some static coming > > out of whatever is connected to hdmi (maybe headphones too? otherwise try > > setting `sysctl dev.pcm.0.dest=1`) > > > > Best, > > Marco > > > Hi, > > Booted the patched 14-CURRENT on the RPI3B+. > > dmesg diff: > +vchiq0: <BCM2835 VCHIQ> mem 0x7e00b840-0x7e00b87b irq 54 on simplebus0 > +vchiq: local ver 8 (min 3), remote ver 8. > +pcm0: <VCHIQ audio> on vchiq0 > > [root@rpi3 ~]# cat /dev/sndstat > Installed devices: > pcm0: <VCHIQ audio> (play) default > No devices installed from userspace. > > [root@rpi3 ~]# sysctl dev.pcm > dev.pcm.0.trace: 0 > dev.pcm.0.starved: 0 > dev.pcm.0.freebuffer: 40000 > dev.pcm.0.underruns: 0 > dev.pcm.0.retrieved: 0 > dev.pcm.0.submitted: 0 > dev.pcm.0.callbacks: 0 > dev.pcm.0.dest: 0 > dev.pcm.0.mode: 3 > dev.pcm.0.bitperfect: 0 > dev.pcm.0.buffersize: 0 > dev.pcm.0.play.vchanformat: s16le:2.0 > dev.pcm.0.play.vchanrate: 48000 > dev.pcm.0.play.vchanmode: fixed > dev.pcm.0.play.vchans: 1 > dev.pcm.0.%parent: vchiq0 > dev.pcm.0.%pnpinfo: > dev.pcm.0.%location: > dev.pcm.0.%driver: pcm > dev.pcm.0.%desc: VCHIQ audio > dev.pcm.%parent: > > > To play some audio I need to search some headphones first. :-) > > Ronald. > > > > Good morning, Found headphones with a cable on the attic. Plugged it into the audio jack and played an mp3. Amazing! Regards, Ronald.