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]
Message-ID: <20230927101948.GA27975@linuxcarl2.richtek.com>
Date:   Wed, 27 Sep 2023 18:19:48 +0800
From:   ChiYuan Huang <cy_huang@...htek.com>
To:     Mark Brown <broonie@...nel.org>
CC:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        Allen Lin <allen_lin@...htek.com>,
        <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC: codecs: rtq9128: Add TDM data source selection

On Wed, Sep 27, 2023 at 11:59:31AM +0200, Mark Brown wrote:
> On Wed, Sep 27, 2023 at 05:46:37PM +0800, ChiYuan Huang wrote:
> > On Wed, Sep 27, 2023 at 11:13:22AM +0200, Mark Brown wrote:
> 
> > > Is this something that's going to be changing dynamically at runtime or
> > > should this be a device property that's set either by firmware or when
> > > we're doing the TDM setup?  This sounds like something I'd expect to be
> > > fixed by the board design.
> 
> > I may think one case if ASoC platform support multiple data source outputs
> > that share the same bck/lcrk on different data pin. If it can be dynamically
> > adjusted for the scenarios, this will keep the flexibility for the differet
> > platform design.
> 
> Sure, but is that actually a practical design - or if someone is doing
> this shouldn't it be joined up with the TDM configuration since with
> just the control it'd only be possible to switch the pins but not change
> the TDM layout?  I'm not sure that this control works as a standalone
> thing.

I think if two data source input for different scenarios, then the data source
switch will become practical. For the standalone usage, keep a device property
to decide this may be enough. But consider the future application, to keep this
in general mixer control is still usable to meet the complex design.

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ