linux-kernel - Re: [PATCH 3/3] dt: Document Holt descrete ADC bindings

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Date:	Sun, 07 Jun 2015 16:43:47 +0100
From:	Jonathan Cameron <jic23@...nel.org>
To:	Vladimir Barinov <vladimir.barinov@...entembedded.com>
CC:	Hartmut Knaack <knaack.h@....de>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Peter Meerwald <pmeerw@...erw.net>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH 3/3] dt: Document Holt descrete ADC bindings

On 01/06/15 13:20, Vladimir Barinov wrote:
> These bindings can be used to register Holt HI-8435/8436/8437 descrete ADC
> 
> Signed-off-by: Vladimir Barinov <vladimir.barinov@...entembedded.com>
> ---
>  .../devicetree/bindings/iio/adc/hi-843x.txt        | 27 ++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/adc/hi-843x.txt
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/hi-843x.txt b/Documentation/devicetree/bindings/iio/adc/hi-843x.txt
> new file mode 100644
> index 0000000..872e801
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/hi-843x.txt
> @@ -0,0 +1,27 @@
> +Holt Integrated Circuits HI-8435/8436/8437 discrete ADC bindings
> +
> +Required properties:
> + - compatible: Should be "holt,hi-8435" or "holt,hi-8436" or "holt,hi-8437"
> + - reg: spi chip select number for the device
> +
> +Recommended properties:
> + - spi-max-frequency: Definition as per
> +		Documentation/devicetree/bindings/spi/spi-bus.txt
> +
> +Optional properties:
> + - holt,mr-gpio: GPIO used for controlling the MR (chip reset) pin
Unless there is anything unusual about the chip reset line, I'd 
be tempted to go with reset-gpios which seems to be somewhat
of a convention based on a quick grep of existing bindings.
> + - holt,debounce-soft: enable software debounce at startup
> + - holt,debounce-soft-delay: software debounce interval in milliseconds
> +
> +Example:
> +adc@0 {
> +	compatible = "holt,hi-8435";
> +	reg = <0>;
> +
> +	holt,mr-gpio = <&gpio6 1 0>;
> +
> +	holt,debounce-soft;
> +	holt,debounce-soft-delay = <100>;
> +
> +	spi-max-frequency = <1000000>;
> +};
> 

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