linux-kernel - Re: [PATCH 3/4] dt-bindings: iio: dac: add mcp4822

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Message-ID: <748c4391-1c8c-8fc2-cef9-6091512c77ef@linaro.org>
Date:   Wed, 5 Apr 2023 16:10:10 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Nicolas Frattaroli <frattaroli.nicolas@...il.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] dt-bindings: iio: dac: add mcp4822

On 05/04/2023 16:01, Nicolas Frattaroli wrote:
> The MCP4801, MCP4802, MCP4811, MCP4812, MCP4821, and MCP4822 are
> SPI digital-to-analog converters by Microchip, which have an
> internal voltage reference, in contrast to the MCP49xx series
> of DACs which use an external voltage reference.
> 
> Thus, these need a separate binding, as to not overcomplicate
> the mcp4922 binding.

The difference is just one property which is very easy to handle - one
allOf:if:then: with
    vref-supply: false

Are there any other differences?

Best regards,
Krzysztof