Date: Mon, 17 Oct 2022 19:27:26 +0100 From: Marco Devesas Campos <devesas.campos@gmail.com> To: Valery Seys <valery@vslash.com>, freebsd-arm@freebsd.org Cc: Odhiambo Washington <odhiambo@gmail.com> Subject: Re: sound on raspberry pi 4 Message-ID: <14F9CA06-C2B1-4E9C-B370-9561F49FA7C9@gmail.com> In-Reply-To: <fd77cbe9-87db-c19c-a75a-53c377e4a42d@vslash.com> References: <Yw%2Bf4FlUSBRiG7Fm@void.f-m.fm> <fd10cb99-d703-6b67-85c5-ed0d2df58952@klop.ws> <1e9994f4-39f9-5adf-2cb7-03c9981b424e@selasky.org> <e4db8912-8b91-e9b7-74fd-518dc0f0ec75@klop.ws> <fb725e00-213c-fd93-c275-31f31ba53e5e@klop.ws> <9C8C18F4-43BA-4F1E-B683-7BD5AC513C8C@gmail.com> <948CD3ED-F501-431F-BE66-3DD51A8C9EF5@gmail.com> <D004B365-569D-4776-A7A0-BF00E559BD82@gmail.com> <CAAdA2WMZnb86_JicibXcXqNbktT1y_A2FZSmi_W2YwcccWd0CA@mail.gmail.com> <cdc18522-975f-800f-d8cf-ff01a33e296b@vslash.com> <CAAdA2WOsD9gPsBK39_0jC5R_pz7C8b3Pd%2BfKdk1ZwDFE7ZyXLg@mail.gmail.com> <fd77cbe9-87db-c19c-a75a-53c377e4a42d@vslash.com>
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For clarity: - the patch should work on all 32 and 64 bit pis and has been tested on zero, zero2 (same as a 3b), and 4 boards; - the sound subsystem the driver talks to outputs to both hdmi and pwm (can be individually targeted), and you can get bit-perfect audio = through hdmi (then it=E2=80=99s a matter of what kind of DAC your = screen/tv/amp-with-hdmi-input has) - i have the pwm output hooked up to an amp and proper speakers and, while I can hear a difference, output quality is actually pretty decent, = certainly if you=E2=80=99re listening to compressed audio. And certainly fine for = what I use it for which is as a sharplay-sync receiver from my mac. Also, if I understand correctly, boards such as the hifiberry connect = via =E2=80=9Ci2s over pcm output", and, while there are drivers for some = boards (eg sys/arm64/rockchip/rk_i2s.c) I can=E2=80=99t find the = equivalent for the pi's bcm283*. (Happy to hear otherwise, here.) Marco > On 17 Oct 2022, at 15:11, Valery Seys <valery@vslash.com> wrote: >=20 > * Raspberry Pi 4: > Broadcom BCM2711, Quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz >=20 > =46rom what I found on the net: > A: The Pi4 still uses a PWM sound output similar to previous = models. Therefore, don=E2=80=99t expect high quality sound from the = onboard sound. A HiFiBerry sound card is still the right choice for = optimal sound quality. >=20 >=20 > * Raspberry Pi 3B+: > Broadcom BCM2837B0, Quad-core Cortex-A53 (ARMv8) 64-bit SoC @ = 1.4GHz >=20 > https://forums.freebsd.org/threads/rpi-3b-sound-and-wifi.69297/ > Sound: sdio > https://reviews.freebsd.org/D12467 >=20 >=20 > Q: could you run MacOS-X.0 on an MacBookPro 2022 ? Still the same OS = ... > A: ;o) >=20 > Do you need sound on a Rpi or any other SFF board ? Get a simple = external USB sound system, really the better and easiest choice I think, >=20 > BR >=20 > V/ >=20 >=20 >=20 > On 17/10/2022 15:24, Odhiambo Washington wrote: >> Oops! >> But still, I thought that the same OS is used for Pi3B+, no? >> On Mon, Oct 17, 2022 at 4:17 PM Valery Seys <valery@vslash.com = <mailto:valery@vslash.com>> wrote: >> Perhaps just look at the subject : "sound on raspberry pi 4", = which is not a >> Pi3B+ I think, >> BR, >> VS >> On 17/10/2022 14:50, Odhiambo Washington wrote: >> > >> > >> > On Mon, Oct 17, 2022 at 3:29 PM Marco Devesas Campos >> <devesas.campos@gmail.com <mailto:devesas.campos@gmail.com> >> > <mailto:devesas.campos@gmail.com = <mailto:devesas.campos@gmail.com>>> wrote: >> > >> > Peeps, >> > >> > Have yet to receive any comments =E2=80=94 let alone = reviews =E2=80=94 on >> > >> > https://reviews.freebsd.org/D36431 = <https://reviews.freebsd.org/D36431>; >> <https://reviews.freebsd.org/D36431 = <https://reviews.freebsd.org/D36431>>; >> > >> > The patch adds sound, and accel video support to 64bit = pi-s; >> > it implements 32 bit compat; and fixes system stalls in the >> > existing code. Useful stuff, methinks, and a few people >> > on this list have atested to that. >> > >> > So, please, anyone? Any =E2=80=94 any! =E2=80=94 feedback = appreciated. >> > >> > Marco >> > >> > >> > Just curious. How do I test this? >> > I have a Pi3B+ which I have always wanted to run FreeBSD on, = but then >> getting >> > FreeBSD Desktop is so much pain. >> > How would I test accel video and sound on a Pi without getting = stressed >> out? :-) >> > >> > -- >> > Best regards, >> > Odhiambo WASHINGTON, >> > Nairobi,KE >> > +254 7 3200 0004/+254 7 2274 3223 >> > "Oh, the cruft.", egrep -v '^$|^.*#' =C2=AF\_(=E3=83=84)_/=C2=AF = :-) >> --=20 >> Best regards, >> Odhiambo WASHINGTON, >> Nairobi,KE >> +254 7 3200 0004/+254 7 2274 3223 >> "Oh, the cruft.", egrep -v '^$|^.*#' =C2=AF\_(=E3=83=84)_/=C2=AF :-) >=20
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