Re: [PATCH 3/3] ASoC: cs42l43: Improve pop performance of the input power up

[Mark Brown]

> cs42l43's decimator is particularly susceptible to discontinuities
> during startup. To help reduce the pop noises adjust the high
> pass filter settings whilst powering up the microphones and add
> a sizable delay to let that filter settle, then restore the user
> settings.

>  struct decim_info cs42l43_decim_info[] = {
>  	{
> +		.freg = CS42L43_DECIM_HPF_WNF_CTRL1,
>  		.vreg = CS42L43_DECIM_VOL_CTRL_CH1_CH2,
>  		.vmask = CS42L43_DECIM1_VD_RAMP_MASK | CS42L43_DECIM1_MUTE_MASK,
>  	},
>  	{
> +		.freg = CS42L43_DECIM_HPF_WNF_CTRL1,
>  		.vreg = CS42L43_DECIM_VOL_CTRL_CH1_CH2,
>  		.vmask = CS42L43_DECIM2_VD_RAMP_MASK | CS42L43_DECIM2_MUTE_MASK,
>  	},
>  	{
> +		.freg = CS42L43_DECIM_HPF_WNF_CTRL2,
>  		.vreg = CS42L43_DECIM_VOL_CTRL_CH1_CH2,
>  		.vmask = CS42L43_DECIM1_VD_RAMP_MASK | CS42L43_DECIM1_MUTE_MASK,
>  	},

Sashiko is flagging a bunch of concerns about the accuracy of this
table:

   https://sashiko.dev/#/patchset/20261102155440.3995136-1-ckeepax%40opensource.cirrus.com

-- 
Mark Brown <broonie@xxxxxxxxxx>