linux-kernel - Re: [PATCH v4 09/11] dt-bindings: iio: adc: ad7476: Add ROHM bd79105

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Message-ID: <20250814-hilarious-nonchalant-bat-b205cf@kuoka>
Date: Thu, 14 Aug 2025 09:29:04 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Matti Vaittinen <mazziesaccount@...il.com>
Cc: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>, 
	Lars-Peter Clausen <lars@...afoo.de>, Michael Hennerich <Michael.Hennerich@...log.com>, 
	Jonathan Cameron <jic23@...nel.org>, David Lechner <dlechner@...libre.com>, 
	Nuno Sá <nuno.sa@...log.com>, Andy Shevchenko <andy@...nel.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, linux-iio@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 09/11] dt-bindings: iio: adc: ad7476: Add ROHM bd79105

On Mon, Aug 11, 2025 at 11:52:04AM +0300, Matti Vaittinen wrote:
> The ROHM BD79105 is a simple, 16-bit, 1-channel ADC with a 'CONVSTART'
> pin used to start the ADC conversion. Other than the 'CONVSTART', there
> are 3 supply pins (one used as a reference), analog inputs, ground and
> communication pins. It's worth noting that the pin somewhat confusingly
> labeled as 'DIN', is a pin which should be used as a chip-select. The IC
> does not have any writable registers.
> 
> The device is designed so that the output pin can, in addition to
> outputting the data, be used as a 'data-ready'-IRQ. There are cases
> where the IRQ can't be used (because it is delivered via SPI data-line).
> Hence, some systems may use a GPIO for polling the data readiness.
> 
> Add a compatible for the bd79105 and add the data-ready GPIO to the
> binding.
> 
> Signed-off-by: Matti Vaittinen <mazziesaccount@...il.com>
> 

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof