linux-kernel - Re: [PATCH v2 6/8] arm64: dts: mediatek: cherry: Enable DSP, audio codec and sound card

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 26 Jul 2022 12:02:48 +0800
From:   Chen-Yu Tsai <wenst@...omium.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     matthias.bgg@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 6/8] arm64: dts: mediatek: cherry: Enable DSP, audio
 codec and sound card

On Mon, Jul 25, 2022 at 6:49 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com> wrote:
>
> Il 25/07/22 12:44, Chen-Yu Tsai ha scritto:
> > On Thu, Jul 21, 2022 at 10:53 PM AngeloGioacchino Del Regno
> > <angelogioacchino.delregno@...labora.com> wrote:
> >>
> >> All machines of the Cherry platform have a working DSP (integrated
> >> into the MT8195 SoC), and audio support, some with a different audio
> >> codec: specifically, some using Realtek's RT5682I and some RT5682S.
> >>
> >> Write a configuration for all the audio bits to enable functionality.
> >
> > I think we're still missing some code for SOF that implements the
> > machine_select() callback, plus the firmware has to be fetched from
> > the ChromeOS rootfs.
> >
> > It might make sense to have SOF disabled for now. Removing the adsp
> > reference and the overriding dai-link entry from the sound node
> > should do the trick.
> >
>
> Uhm... I think that we should either have audio, with DSP, or not have it
> at all... the userspace configurations will differ, so we'd end up with
> two different confs of which one will get unused and cluttering the ucm2
> conf git.

You're right. I haven't even figured out which ones to pull in.

> At this point, I think that the most sensible option is to either omit
> this commit, or keep audio disabled until the machine_select() callback
> gets in...

Agreed.

ChenYu