linux-kernel - Re: [PATCH v2 2/5] mux: gpio: add optional regulator support

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Message-ID: <d9ac99e2-1933-420f-81e3-c3a2946b99fb@kernel.org>
Date: Fri, 21 Mar 2025 10:27:06 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: srinivas.kandagatla@...aro.org, peda@...ntia.se, broonie@...nel.org,
 andersson@...nel.org, krzk+dt@...nel.org
Cc: ivprusov@...utedevices.com, luca.ceresoli@...tlin.com,
 zhoubinbin@...ngson.cn, paulha@...nsource.cirrus.com, lgirdwood@...il.com,
 robh@...nel.org, conor+dt@...nel.org, konradybcio@...nel.org,
 perex@...ex.cz, tiwai@...e.com, dmitry.baryshkov@....qualcomm.com,
 linux-sound@...r.kernel.org, linux-arm-msm@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 johan+linaro@...nel.org
Subject: Re: [PATCH v2 2/5] mux: gpio: add optional regulator support

On 20/03/2025 12:56, srinivas.kandagatla@...aro.org wrote:
>  struct mux_gpio {
>  	struct gpio_descs *gpios;
> @@ -82,6 +83,13 @@ static int mux_gpio_probe(struct platform_device *pdev)
>  		mux_chip->mux->idle_state = idle_state;
>  	}
>  
> +	ret = devm_regulator_get_enable_optional(dev, "mux");
> +	if (ret && ret != -ENODEV) {
> +		if (ret != -EPROBE_DEFER)
> +			dev_err(dev, "Couldn't retrieve/enable gpio mux supply\n");

return dev_err_probe



Best regards,
Krzysztof