[alsa-devel] [PATCH 4/5] ASoC: simple-card: Support setting mclk via a fixed factor

Mark Brown broonie at kernel.org
Fri Apr 18 18:38:49 CEST 2014


On Thu, Apr 17, 2014 at 05:53:13PM +0200, Andrew Lunn wrote:

> +- simple-audio-card,mclk-factor		: Multiplication factor between stream rate and codec
> +					  mclk.

The normal name for this is fs rather than factor.

> +	if (priv->mclk_factor) {
> +		mclk = params_rate(params) * priv->mclk_factor;
> +		ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
> +					     SND_SOC_CLOCK_IN);
> +	}

We also need to consider what happens in cases where a clock is
specified via the clocks property.  I would expect this to be used to
set the rate for that clock as well.
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