Re: [PATCH 2/3] arm64: dts: qcom: nord-rrd: Add sound support

[Konrad Dybcio]

On 9/14/26 4:40 AM, Shawn Guo wrote:
> From: Mohammad Rafi Shaik <mohammad.rafi.shaik@xxxxxxxxxxxxxxxx>
> 
> Enable audio on the nord RRD board. Add a soundcard node using the
> qcom,nord-ride-sndcard compatible with two DAI links:
> 
>   - PCM1681 playback over Tertiary MI2S RX
>   - ADAU1979 capture over Tertiary MI2S TX
> 
> Add MI2S pin mux states (data, SCLK, WS on GPIO 73-76) and the MCLK0
> pin state (GPIO 99) to nord-embedded.dtsi so they can be shared with
> other nord board variants.
> 
> Add PCM1681/ADAU1979 codec nodes on I2C18, with the PCM1681 system
> clock supplied via MCLK0. The DAC control lines come off a TCA6408 I/O
> expander on the same bus, so add that too and hog its dac_enable and
> click-pop-mute-n outputs, both of which have to be asserted before the
> DAC produces sound.

Sounds like something a driver should ensure?

Konrad