[alsa-devel] [PATCH] ASoC: rt1308: Add RT1308 amplifier driver

[Derek [方德義]]

> Subject: Re: [PATCH] ASoC: rt1308: Add RT1308 amplifier driver
> 
> On Wed, May 08, 2019 at 01:17:54PM +0000, Derek wrote:
> 
> > > The maximum volume can be limited with snd_soc_limit_volume() but if the
> > >  limit is for the speaker then that's machine dependent anyway.
> 
> > The maximum volume setting is temporarily not machine dependent.
> > It avoids harming if any machine doesn't set the limit volume.
> 
> I'm confused about what this limit is - is it just some arbatrary limit
> imposed in case some board has problems or is it an actual limit that
> comes from the chip?  If it's a "just in case" limit then the board
> should be the one doing the limiting, yes people can break things but
> it's difficult to get decision like that done sensibly in the CODEC
> driver in a way that works for everything and the general expectation is
> that this is all for use by system integrators rather than end users.

It is an actual limit that comes from the chip.

> 
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