Re: [PATCH v2] ASoC: qcom: SC7280: Add support for external DMIC bias supply

From: Mark Brown
Date: Thu Jul 28 2022 - 10:22:47 EST


On Thu, Jul 28, 2022 at 07:29:49PM +0530, Srinivasa Rao Mandadapu wrote:
> Update SC7280 machine driver for enabling external dmic bias supply,
> which is required for villager evt boards.

> +++ b/sound/soc/qcom/sc7280.c
> @@ -356,6 +356,7 @@ static const struct snd_soc_ops sc7280_ops = {
> static const struct snd_soc_dapm_widget sc7280_snd_widgets[] = {
> SND_SOC_DAPM_HP("Headphone Jack", NULL),
> SND_SOC_DAPM_MIC("Headset Mic", NULL),
> + SND_SOC_DAPM_REGULATOR_SUPPLY("DMICVDD", 0, 0),
> };
>
> static int sc7280_snd_platform_probe(struct platform_device *pdev)

Don't you want to connect this to something? This won't do anything
as-is. I can't see any references to DMICVDD which might be failing to
resolve in the current sound/soc/qcom.

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