Re: [alsa-devel] [PATCH v2 11/14] ASoC: sun4i-codec: Add support for A31 board level audio routing

On Thu, Nov 03, 2016 at 03:55:53PM +0800, Chen-Yu Tsai wrote:

The A31 SoC's codec has various inputs, outputs and microphone bias supplies. These can be routed on the board in different ways, such as:

• HPCOM may be connected to have the headphone DC coupled.

• Microphones all use the MBIAS main microphone supply or one mic may use the HBIAS supply, which supports headset detection and buttons.

• Line Out may be routed to an audio jack, or an onboard speaker amp with power controls.

Add support for specifying the audio routes in the device tree.

Signed-off-by: Chen-Yu Tsai wens@csie.org

Acked-by: Maxime Ripard maxime.ripard@free-electrons.com

Thanks, Maxime