linux-kernel - Re: [PATCH v8 11/11] iio: adc: ad7768-1: add low pass -3dB cutoff attribute

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Message-ID: <aCcHlAE8LvO_fLxQ@smile.fi.intel.com>
Date: Fri, 16 May 2025 12:38:28 +0300
From: Andy Shevchenko <andy@...nel.org>
To: Jonathan Santos <Jonathan.Santos@...log.com>
Cc: linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
	nuno.sa@...log.com, Michael.Hennerich@...log.com,
	marcelo.schmitt@...log.com, jic23@...nel.org, robh@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, marcelo.schmitt1@...il.com,
	linus.walleij@...aro.org, brgl@...ev.pl, lgirdwood@...il.com,
	broonie@...nel.org, jonath4nns@...il.com, dlechner@...libre.com
Subject: Re: [PATCH v8 11/11] iio: adc: ad7768-1: add low pass -3dB cutoff
 attribute

On Thu, May 15, 2025 at 06:14:33PM -0300, Jonathan Santos wrote:
> Ad7768-1 has a different -3db frequency multiplier depending on
> the filter type configured. The cutoff frequency also varies according
> to the current ODR.
> 
> Add a readonly low pass -3dB frequency cutoff attribute to clarify to
> the user which bandwidth is being allowed depending on the filter
> configurations.

...

>  		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
>  		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |
> -					    BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
> +					    BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO) |
> +					    BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),

You can make the diff looking better and easier to review if squeeze the new
bit in between of the existing one, this will remove +- LoC here.

-- 
With Best Regards,
Andy Shevchenko