linux-kernel - Re: [PATCH v7 3/6] iio: adc: ad7192: Add aincom supply

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Date: Tue, 30 Apr 2024 23:28:08 +0300
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: Alisa-Dariana Roman <alisadariana@...il.com>
Cc: michael.hennerich@...log.com, linux-iio@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	alexandru.tachici@...log.com, lars@...afoo.de, jic23@...nel.org, 
	robh@...nel.org, krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org, 
	lgirdwood@...il.com, broonie@...nel.org, andy@...nel.org, nuno.sa@...log.com, 
	marcelo.schmitt@...log.com, bigunclemax@...il.com, dlechner@...libre.com, 
	okan.sahin@...log.com, fr0st61te@...il.com, alisa.roman@...log.com, 
	marcus.folkesson@...il.com, schnelle@...ux.ibm.com, liambeguin@...il.com
Subject: Re: [PATCH v7 3/6] iio: adc: ad7192: Add aincom supply

On Tue, Apr 30, 2024 at 7:30 PM Alisa-Dariana Roman
<alisadariana@...il.com> wrote:
>
> AINCOM should actually be a supply. AINx inputs are referenced to AINCOM
> in pseudo-differential operation mode. AINCOM voltage represents the
> offset of corresponding channels.

..

> +               ret = regulator_enable(aincom);
> +               if (ret)
> +                       return dev_err_probe(&spi->dev, ret,
> +                                            "Failed to enable specified AINCOM supply\n");
> +
> +               ret = devm_add_action_or_reset(&spi->dev, ad7192_reg_disable, aincom);
> +               if (ret)
> +                       return ret;
> +
> +               ret = regulator_get_voltage(aincom);
> +               if (ret < 0)
> +                       return dev_err_probe(&spi->dev, ret,
> +                                            "Device tree error, AINCOM voltage undefined\n");
> +               st->aincom_mv = ret / 1000;

MILLI ?

-- 
With Best Regards,
Andy Shevchenko