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Date: Sun, 25 Nov 2018 12:28:57 +0000
From: Jonathan Cameron <jic23@kernel.org>
Subject: Re: [PATCH v3 1/2] dt-bindings: iio: potentiometer: Add Microchip
 MCP41xxx/42xxx
Message-ID: <20181125122857.129b91b2@archlinux>
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To: Chris Coffey <cmc@babblebit.net>
Cc: Hartmut Knaack <knaack.h@gmx.de>, Lars-Peter Clausen <lars@metafoo.de>, Peter Meerwald-Stadler <pmeerw@pmeerw.net>, Peter Rosin <peda@axentia.se>, Slawomir Stepien <sst@poczta.fm>, Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, linux-iio@vger.kernel.org, devicetree@vger.kernel.org
List-ID: <devicetree@vger.kernel.org>

On Tue, 20 Nov 2018 14:17:12 +0000
Chris Coffey <cmc@babblebit.net> wrote:

> This patch adds device tree documentation for the Microchip
> MCP41xxx/42xxx family of digital potentiometers.
> 
> Signed-off-by: Chris Coffey <cmc@babblebit.net>
> ---
>  .../bindings/iio/potentiometer/mcp41010.txt        | 29 ++++++++++++++++++++++
>  1 file changed, 29 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/potentiometer/mcp41010.txt
> 
> diff --git a/Documentation/devicetree/bindings/iio/potentiometer/mcp41010.txt b/Documentation/devicetree/bindings/iio/potentiometer/mcp41010.txt
> new file mode 100644
> index 0000000000..7dcf2071b7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/potentiometer/mcp41010.txt
> @@ -0,0 +1,29 @@
> +* Microchip MCP41010/41050/41100/42010/42050/42100 Digital Potentiometer
> +  driver
I'll channel my inner Rob ;)  Bindings are for devices, not drivers
(basically don't mention driver anywhere)

It's trivial (and common) so I just tidied it up whilst applying.

Applied to the togreg branch of iio.git and pushed out as testing for
the autobuilders to play with it.

Thanks,

Jonathan

> +
> +Datasheet publicly available at:
> +http://ww1.microchip.com/downloads/en/devicedoc/11195c.pdf
> +
> +The node for this driver must be a child node of a SPI controller, hence
> +all mandatory properties described in
> +
> +        Documentation/devicetree/bindings/spi/spi-bus.txt
> +
> +must be specified.
> +
> +Required properties:
> +	- compatible:  	Must be one of the following, depending on the
> +			model:
> +			"microchip,mcp41010"
> +			"microchip,mcp41050"
> +			"microchip,mcp41100"
> +			"microchip,mcp42010"
> +			"microchip,mcp42050"
> +			"microchip,mcp42100"
> +
> +Example:
> +potentiometer@0 {
> +	compatible = "microchip,mcp41010";
> +	reg = <0>;
> +	spi-max-frequency = <500000>;
> +};