[PATCH v3 1/2] ASoC: cs35l41: CS35L41 Boosted Smart Amplifier

[Mark Brown]

On Fri, Jul 09, 2021 at 06:11:28PM -0500, David Rhodes wrote:
> On 7/5/21 2:20 PM, Mark Brown wrote:

> > > +	case SND_SOC_DAPM_POST_PMD:
> > > +		regmap_read(cs35l41->regmap, CS35L41_PWR_CTRL1, &val);
> > > +		if (val & CS35L41_GLOBAL_EN_MASK) {
> > > +			regmap_update_bits(cs35l41->regmap, CS35L41_PWR_CTRL1,
> > > +					CS35L41_GLOBAL_EN_MASK, 0);

> > I can't see any references to GLOBAL_EN outside this function, why might
> > it not be set?

> This check prevents an incorrect 'PDN Failed' message if DAPM initializes
> and turns the widget off at boot (with no prior power-up).

In what way does it prevent this message and why is this a good approach
to the issue?
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