linux-kernel - Re: [PATCH v3 4/4] iio: adc: ad4000: Add support for PulSAR devices

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Message-ID: <20241124131910.0b2a2d8d@jic23-huawei>
Date: Sun, 24 Nov 2024 13:19:10 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Marcelo Schmitt <marcelo.schmitt@...log.com>
Cc: <lars@...afoo.de>, <Michael.Hennerich@...log.com>, <robh@...nel.org>,
 <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <marcelo.schmitt1@...il.com>,
 <linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>,
 <linux-kernel@...r.kernel.org>, David Lechner <dlechner@...libre.com>
Subject: Re: [PATCH v3 4/4] iio: adc: ad4000: Add support for PulSAR devices

On Tue, 19 Nov 2024 09:54:39 -0300
Marcelo Schmitt <marcelo.schmitt@...log.com> wrote:

> The ADI PulSAR series of single-channel devices comprises differential and
> pseudo-differential ADCs that don't require any input data from the host
> controller. By not requiring a data input line, PulSAR devices can operate
> with a 3-wire only data bus in some setups.
> 
> The AD4000 series and the single-channel PulSAR series of devices have
> similar SPI transfer specifications and wiring configurations.
> Single-channel PulSAR devices are slower than AD4000 and don't have a
> configuration register. That taken into account, single-channel PulSARs can
> be supported by the ad4000 driver without any increase in code complexity.
> 
> Extend the AD4000 driver to also support single-channel PulSAR devices.
> 
> Reviewed-by: David Lechner <dlechner@...libre.com>
> Signed-off-by: Marcelo Schmitt <marcelo.schmitt@...log.com>
The series looks fine to be other than the remaining DT discussion.
Fingers crossed for v4 :)

Jonathan