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From: Janani Sunil <jan.sun97@gmail.com>
To: Marcelo Schmitt <marcelo.schmitt1@gmail.com>,
	Janani Sunil <janani.sunil@analog.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>,
	Michael Hennerich <Michael.Hennerich@analog.com>,
	Alexandru Ardelean <alexandru.ardelean@analog.com>,
	Jonathan Cameron <jic23@kernel.org>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Jonathan Corbet <corbet@lwn.net>,
	linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
	jan.sun97@gmail.com
Subject: Re: [PATCH v2 1/2] dt-bindings: iio: dac: Add max22007
Date: Fri, 9 Jan 2026 15:08:06 +0100	[thread overview]
Message-ID: <cd918f27-3939-4987-ab5c-3d88572e6e0e@gmail.com> (raw)
In-Reply-To: <aWD4LA7Y1fl3yvh-@debian-BULLSEYE-live-builder-AMD64>

Hi Marcelo,

Thank you for the suggestion.
However, reusing the output-range-microamp and output-range-microvolt properties might mislead the users into thinking that they can configure the DAC output range, which the device does not support. The adi,ch-func fits better here.

On 1/9/26 13:44, Marcelo Schmitt wrote:
> Hi Janani,
>
> One extra comment in addition to Krzysztof's.
>
> On 01/08, Janani Sunil wrote:
>> Devicetree bindings for MAX22007 4-channel 12-bit DAC that drives a
>> voltage or current output on each channel
>>
>> Signed-off-by: Janani Sunil <janani.sunil@analog.com>
>> ---
> ...
>> +
>> +patternProperties:
>> +  "^channel@[0-3]$":
>> +    $ref: /schemas/iio/dac/dac.yaml#
>> +    type: object
>> +    description:
>> +      Represents the external channels which are connected to the DAC.
>> +
>> +    properties:
>> +      reg:
>> +        description: Channel number
>> +        items:
>> +          minimum: 0
>> +          maximum: 3
>> +
>> +      adi,ch-func:
>> +        description:
>> +          Channel output type. Use CH_FUNC_VOLTAGE_OUTPUT for voltage
>> +          output or CH_FUNC_CURRENT_OUTPUT for current output.
>> +        $ref: /schemas/types.yaml#/definitions/uint32
>> +        enum: [1, 2]
> adi,ad74413r.yaml has many possibilities for the channel output type.
> max22007 is only either voltage or current.
> Can't we do this with output-range-microamp and output-range-microvolt from dac.yaml?
> Figure out the channel type from the output-range- property?
>
>> +
>> +    required:
>> +      - reg
>> +      - adi,ch-func
>> +
>> +    unevaluatedProperties: false
> With best regards,
> Marcelo

Best Regards,
Janani Sunil


  reply	other threads:[~2026-01-09 14:08 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-08 12:58 [PATCH v2 0/2] Subject: [PATCH v1 0/3] iio: dac: Add support for MAX22007 DAC Janani Sunil
2026-01-08 12:58 ` [PATCH v2 1/2] dt-bindings: iio: dac: Add max22007 Janani Sunil
2026-01-09  8:26   ` Krzysztof Kozlowski
2026-01-09 12:44   ` Marcelo Schmitt
2026-01-09 14:08     ` Janani Sunil [this message]
2026-01-08 12:58 ` [PATCH v2 2/2] iio: dac: Add MAX22007 DAC driver support Janani Sunil
2026-01-09 14:11   ` Marcelo Schmitt
2026-01-09 15:36     ` Janani Sunil
2026-01-11 15:56       ` Jonathan Cameron
2026-01-11 16:09   ` Jonathan Cameron
2026-01-12 20:26   ` Jonathan Cameron

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