Re: [PATCH] conf/ucm: bytcr-rt5651: Document mono speaker wiring

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On Tue, 01 Jan 2019 12:32:46 +0100,
Hans de Goede wrote:
> 
> During my recent work on the bytcht-es8316 UCM profile I realized that the
> bytcr-rt5651 devices with a single speaker use a differential setup just
> like the es8316 does. The tell-tale here is the speaker going quiet when
> playing the exact same sound on both channels when things are configured
> for stereo speakers.
> 
> I've run some tests and the rt5651 does have a special mono balanced out
> mode for its line-out but using this results in the same sound (and the
> same loudness / volume of the sound) as our current solution, so adding
> support for this to the kernel buys us nothing.
> 
> This commit makes no changes, it just documents my findings in a big
> comment for future reference.
> 
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>

Applied, thanks.


Takashi
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