Re: [PATCH] ASoC: qcom: sm8250: Limit RX digital gain to 0 dB

[Prasad Kumpatla]

On 10/27/2026 7:03 AM, Filippo Falezza wrote:
> The RX macro interpolator gains ("RX_RXn Digital Volume") run from
> -84 dB to +40 dB. PipeWire and PulseAudio map full volume to the top of
> a hardware control's range, so a UCM device that uses one of them as
> its volume control plays 40 dB hot at 100% and clips.
>
> Set a platform limit of 84 (0 dB) on the RX0, RX1 and RX2 interpolator
> gains when the RX codec DMA link is initialised, the way the sc8280xp
> and x1e80100 machine drivers limit their WSA gains. 0 dB is the default
> of these controls and the value alsa-ucm-conf's rx-macro init sets, so
> existing configurations are unaffected. A control that does not exist
> on a board is skipped.
>
> Signed-off-by: Filippo Falezza <effeffe99@xxxxxxxxx>
> ---


LGTM.

Reviewed-by: Prasad Kumpatla<prasad.kumpatla@xxxxxxxxxxxxxxxx>

Thanks,
Prasad