Re: VCHIQ sound does WORK on Raspi4B 2711 CPU chip. Which DTB to include on config.txt file, Any other missing pieces? NO

From: Fred Finster <fred_at_thegalacticzoo.com>
Date: Wed, 07 Sep 2022 04:46:59 UTC 
On 9/6/22 04:23, Marco Devesas Campos wrote:
> Hi
>
>> On 7 Sep 2022, at 06:04, Fred Finster <fred@thegalacticzoo.com> wrote:
>>
>> VCHIQ sound on Raspi4B HDMI audio.  Which DTB to include on config.txt file, Any other missing pieces?
> stock confit.txt and dtb-s.
>
> dmesg should then show
>
> vchiq0: <BCM2835 VCHIQ> mem 0x7e00b840-0x7e00b87b irq 72 on simplebus0
> vchiq: local ver 8 (min 3), remote ver 8.
> pcm0: <VCHIQ audio> on vchiq0
>
> and
>    cat /dev/random > /dev/dsp
> should play static
>
> If nothing’s playing, flipping the sysctl dev.pcm.0.dest through
>   - 0: both hdmi and headphones
>   - 1: headphones
>   - 2: hdmi
> usually brings the audio back to life.
>
> Best,
> Marco


Thank you so very much for this missing piece of setting up the Sound 
for VCHIQ and the GENERIC_VCHIQ.conf  file.   I built the kernel 
GENERIC-VCHIQ in the following manner:


login as "root"

cd /usr/src

patch -v <vchiq_sound_patch.txt

time make buildkernel KERNCONF=GENERIC-VCHIQ

time make installkernel KERNCONF=GENERIC-VCHIQ

reboot, open firefox,  www.youtube.com,  play a Dave Chappelle video.  
It just works, Marco!!!  Videos come alive with sound!

Thanks so very much, for making a very complete patch, that helps a new 
Raspberry Pi 4B FreeBSD 14.0 kernel maker succeed with this endeavour.  
YES!!


sysctl dev.pcm
dev.pcm.0.trace: 0
dev.pcm.0.starved: 5739
dev.pcm.0.freebuffer: 7360
dev.pcm.0.underruns: 0
dev.pcm.0.retrieved: 45881040
dev.pcm.0.submitted: 45920000
dev.pcm.0.callbacks: 23873
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:
root@Fred_RasPi4B:~ #



  cat /dev/sndstat
Installed devices:
pcm0: <VCHIQ audio> (play) default
No devices installed from userspace.
root@Fred_RasPi4B:~ # uname -a
FreeBSD Fred_RasPi4B 14.0-CURRENT FreeBSD 14.0-CURRENT #0 
main-n257130-c0665d5c824-dirty: Tue Sep  6 23:52:55 PDT 2022 
fred@Fred_RasPi4B:/usr/obj/usr/src/arm64.aarch64/sys/GENERIC-VCHIQ arm64
root@Fred_RasPi4B:~ # freebsd-version -kru
14.0-CURRENT
14.0-CURRENT
14.0-CURRENT
root@Fred_RasPi4B:~ #

root@Fred_RasPi4B:~ # dmesg | grep -i vchiq
fred@Fred_RasPi4B:/usr/obj/usr/src/arm64.aarch64/sys/GENERIC-VCHIQ arm64
vchiq0: <BCM2835 VCHIQ> mem 0x7e00b840-0x7e00b87b irq 72 on simplebus0
vchiq: local ver 8 (min 3), remote ver 8.
pcm0: <VCHIQ audio> on vchiq0
root@Fred_RasPi4B:~ # uname -a
FreeBSD Fred_RasPi4B 14.0-CURRENT FreeBSD 14.0-CURRENT #0 
main-n257130-c0665d5c824-dirty: Tue Sep  6 23:52:55 PDT 2022 
fred@Fred_RasPi4B:/usr/obj/usr/src/arm64.aarch64/sys/GENERIC-VCHIQ arm64

I hope this little bit of feedback helps you.  I need to go to work, now 
for 12 hours.  Thanks ago so very much.   This FreeBSD has come alive on 
the Raspberry Pi 4B with 8 GB of dram memory, to be able to play video 
and HEAR SOUND!!.  Youtube.com comes alive!


I can share more test data if you need, Marco.  Just ask and I will 
test.  https://www.frankspeech.com is a good site to test video hardware

Fred L. Finster  probably missing something here, Marcos.

fred@thegalacticzoo.com

971-718-9144

https://ghostbsd-arm64.blogspot.com

ps.  Looking forward to this VCHIQ code patch being included in the tree 
and in a new snapshot FreeBSD 14.0 arm64 image.
  https://freebsd.org/where