linux-kernel - Re: [PATCH v6 1/4] hwmon: ltc2978: device tree bindings documentation

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Date:	Thu, 16 Oct 2014 12:46:07 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	atull@...nsource.altera.com
Cc:	jdelvare@...e.de, lm-sensors@...sensors.org, lgirdwood@...il.com,
	broonie@...nel.org, robh+dt@...nel.org, pawel.moll@....com,
	mark.rutland@....com, ijc+devicetree@...lion.org.uk,
	galak@...eaurora.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, delicious.quinoa@...il.com,
	dinguyen@...nsource.altera.com, yvanderv@...nsource.altera.com
Subject: Re: [PATCH v6 1/4] hwmon: ltc2978: device tree bindings documentation

On Wed, Oct 15, 2014 at 01:55:07PM -0500, atull@...nsource.altera.com wrote:
> From: Alan Tull <atull@...nsource.altera.com>
> 
> Add device tree bindings documentation for ltc2978.
> 
> Signed-off-by: Alan Tull <atull@...nsource.altera.com>
> Cc: Guenter Roeck <linux@...ck-us.net>
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: Mark Brown <broonie@...nel.org>
> ---
> v2: clean whitespace
> 
> v3: list compatible strings in single column
>     add vendor as lltc
>     mention regulators.txt instead of documenting regulator-name
>     s/vout_en/vout/
>     remove size_cells, address-cells
>     use node name to identify regulators
> ---
>  .../devicetree/bindings/hwmon/ltc2978.txt          |   39 ++++++++++++++++++++
>  1 file changed, 39 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/hwmon/ltc2978.txt
> 
> diff --git a/Documentation/devicetree/bindings/hwmon/ltc2978.txt b/Documentation/devicetree/bindings/hwmon/ltc2978.txt
> new file mode 100644
> index 0000000..16c1227
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/ltc2978.txt
> @@ -0,0 +1,39 @@
> +ltc2978
> +
> +Required properties:
> +- compatible: should contain one of:
> +  * "lltc,ltc2974"
> +  * "lltc,ltc2977"
> +  * "lltc,ltc2978"
> +  * "lltc,ltc3880"
> +  * "lltc,ltc3883"
> +  * "lltc,ltm4676"
> +- reg: I2C slave address
> +
> +Optional properties:
> +- regulators: A node that houses a sub-node for each regulator controlled by
> +  the device. Each sub-node is identified using the node's name, with valid
> +  values listed below. The content of each sub-node is defined by the
> +  standard binding for regulators; see regulator.txt.
> +
> +Valid names of regulators depend on number of supplies supported per device:
> +  * ltc2974 : vout0 - vout3
> +  * ltc2977 : vout0 - vout7
> +  * ltc2978 : vout0 - vout7
> +  * ltc3880 : vout0 - vout1
> +  * ltc3883 : vout0
> +  * ltm4676 : vout0 - vout1
> +
> +Example:
> +ltc2978@5e {
> +	compatible = "ltc2978";

Nitpick, but still:

		"lltc,ltc2978"

> +	reg = <0x5e>;
> +	regulators {
> +		vout0 {
> +			regulator-name = "FPGA-2.5V";
> +		};
> +		vout2 {
> +			regulator-name = "FPGA-1.5V";
> +		};
> +	};
> +};
> -- 
> 1.7.9.5
> 
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