[alsa-devel] [PATCH 1/2] ASoC: Intel: sof-rt5682: add MCLK support for BYT platform

[Pierre-Louis Bossart]

On 6/18/19 2:23 AM, Bard liao wrote:
> From: Xun Zhang <xun2.zhang at intel.com>
> 
> The sof-rt5682 machine driver currently uses BCLK on BYT/Minnowboard
> platform. The MCLK signal is available since the Turbot revision, so
> enable MCLK on BYT/Minnowboard Turbot platform.

The commit message is not wrong but for more context the MCLK is enabled 
on all known BYT/CHT platforms except early MinnowBoards and Up where 
the MCLK is not available on the low-speed/HAT connector.

> 
> Signed-off-by: Xun Zhang <xun2.zhang at intel.com>
> Signed-off-by: Bard liao <yung-chuan.liao at linux.intel.com>


>   	if (sof_rt5682_quirk & SOF_RT5682_MCLK_EN) {
> +		if (sof_rt5682_quirk & SOF_RT5682_MCLK_BYTCHT_EN) {
> +			ret = clk_prepare_enable(ctx->mclk);
> +			if (ret < 0) {
> +				dev_err(rtd->dev,
> +					"could not configure MCLK state");
> +				return ret;
> +			}
> +		}

Note that we could technically fallback to using the BCLK only in the 
error case but it's an unlikely scenario which we've never seen, so

Patch 1 and 2

Acked-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>