Re: [alsa-devel] [PATCH] ASoC: bdw-rt5677: enable runtime channel merge

Subject: [PATCH] ASoC: bdw-rt5677: enable runtime channel merge

In the DAI link "Capture PCM", the FE DAI "Capture Pin" supports 4-channel capture but the BE DAI supports only 2-channel capture. To fix the channel mismatch, we need to enable the runtime channel merge for this DAI link.

Hi Pierre,

This patch is for the same issue discussed in the following thread: https://patchwork.kernel.org/patch/11134167/

We enable the runtime channel merge for the DMIC DAI instead of adding a machine driver constraint. It's working good on chrome's 3.14 branch (which requires some backport for the runtime channel merge feature). Please let me know if this implementation is correct for the FE/BE mismatch problem. Thanks.

Regards, Brent