linux-kernel - Re: [PATCH v3 2/2] iio: addac: add AD74115 driver

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Message-ID: <20221117162238.0000224a@Huawei.com>
Date:   Thu, 17 Nov 2022 16:22:38 +0000
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Cosmin Tanislav <demonsingur@...il.com>
CC:     Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Cosmin Tanislav <cosmin.tanislav@...log.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        "William Breathitt Gray" <william.gray@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        <linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2/2] iio: addac: add AD74115 driver

On Thu, 17 Nov 2022 10:09:16 +0200
Cosmin Tanislav <demonsingur@...il.com> wrote:

> The AD74115H is a single-channel, software-configurable, input and
> output device for industrial control applications. The AD74115H
> provides a wide range of use cases, integrated on a single chip.
> 
> These use cases include analog output, analog input, digital output,
> digital input, resistance temperature detector (RTD), and thermocouple
> measurement capability. The AD74115H also has an integrated HART modem.
> 
> A serial peripheral interface (SPI) is used to handle all communications
> to the device, including communications with the HART modem. The digital
> input and digital outputs can be accessed via the SPI or the
> general-purpose input and output (GPIO) pins to support higher
> speed data rates.
> 
> The device features a 16-bit, sigma-delta analog-to-digital converter
> (ADC) and a 14-bit digital-to-analog converter (DAC).
> The AD74115H contains a high accuracy 2.5 V on-chip reference that can
> be used as the DAC and ADC reference.
> 
> Signed-off-by: Cosmin Tanislav <cosmin.tanislav@...log.com>
LGTM

Not sure if Linus W wants to take a look at the GPIO chip stuff, but
we should leave a few days to give him the opportunity + DT review
needed before I pick this up.

Thanks,

Jonathan