linux-kernel - Re: [PATCH v3 4/8] MFD: ti_am335x_tscadc: add device tree binding information

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Date:	Sat, 19 Jan 2013 23:28:14 +0100
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	"Patil, Rachna" <rachna@...com>
CC:	linux-doc@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
	linux-iio@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Dmitry Torokhov <dtor@...l.ru>,
	Rob Herring <rob.herring@...xeda.com>,
	Jonathan Cameron <jic23@....ac.uk>,
	Tony Lindgren <tony@...mide.com>,
	Benit Cousson <b-cousson@...com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Landley <rob@...dley.net>,
	Russell King <linux@....linux.org.uk>
Subject: Re: [PATCH v3 4/8] MFD: ti_am335x_tscadc: add device tree binding
 information

Hi,

On 01/18/2013 11:48 AM, Patil, Rachna wrote:
> From: "Patil, Rachna" <rachna@...com>
> 
> Signed-off-by: Patil, Rachna <rachna@...com>
> ---
>  .../devicetree/bindings/mfd/ti_am335x_tscadc.txt   |   35 ++++++++++++++++++++
>  1 file changed, 35 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/ti_am335x_tscadc.txt
> 
> diff --git a/Documentation/devicetree/bindings/mfd/ti_am335x_tscadc.txt b/Documentation/devicetree/bindings/mfd/ti_am335x_tscadc.txt
> new file mode 100644
> index 0000000..c13c492
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/ti_am335x_tscadc.txt
> @@ -0,0 +1,35 @@
> +Texas Instruments - TSC / ADC multi-functional device
> +
> +ti_tscadc is a multi-function device with touchscreen and ADC on chip.
> +This document describes the binding for mfd device.
> +
> +Required properties:
> +- compatible: "ti,ti-tscadc"
> +- reg: Specifies the address of MFD block
> +- interrupts: IRQ line connected to the main SoC
> +- interrupt-parent: The parent interrupt controller

The subnodes and their properties also need documentation.

> +
> +Optional properties:
> +- ti,hwmods: Hardware information related to TSC/ADC MFD device
> +
> +Example:
> +
> +	tscadc: tscadc@...0d000 {
> +		compatible = "ti,ti-tscadc";
> +		reg = <0x44e0d000 0x1000>;
> +
> +		interrupt-parent = <&intc>;
> +		interrupts = <16>;
> +		ti,hwmods = "adc_tsc";
> +
> +		tsc {
> +			wires = <4>;
> +			x-plate-resistance = <200>;
> +			steps-to-configure = <5>;
> +			wire-config = <0x00 0x11 0x22 0x33>;

Non-standard properties should have a vendor prefix.

> +		};
> +
> +		adc {
> +			adc-channels = <4>;
> +		};
> +	};

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