[alsa-devel] [RFC PATCH 1/2] ASoC: simple-card: add support for bclk_ratio

[Mark Brown]

On Tue, Feb 26, 2019 at 09:53:22AM -0500, Sven Van Asbroeck wrote:
> On Tue, Feb 26, 2019 at 4:11 AM Russell King - ARM Linux admin

> > If the signal continues toggling, what does it do for the inactive
> > channel - is that just one BCLK period long or does it assume there
> > is still the second channel?  If the former, it means we could end
> > up with bclk_ratios of 17, 25, 33 which imho is unlikely, and
> > would mess up TDA998x's CTS measurement.

> Good point. i2s with a single channel makes no sense.

As with every bad idea you can think of that never stopped anyone making
such hardware.  Mono is usually implemented by either leaving the right
channel idle or playing the same signal on both channels.
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