linux-kernel - Re: [PATCH/RFC v13 04/13] DT: Add documentation for the mfd Maxim max77693

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Date:	Mon, 23 Mar 2015 12:07:43 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Jacek Anaszewski <j.anaszewski@...sung.com>
Cc:	linux-leds@...r.kernel.org, linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	kyungmin.park@...sung.com, pavel@....cz, cooloney@...il.com,
	rpurdie@...ys.net, sakari.ailus@....fi, s.nawrocki@...sung.com,
	Andrzej Hajda <a.hajda@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>
Subject: Re: [PATCH/RFC v13 04/13] DT: Add documentation for the mfd Maxim
 max77693

This patch requires a DT Ack.

> This patch adds device tree binding documentation for
> the flash cell of the Maxim max77693 multifunctional device.
> 
> Signed-off-by: Jacek Anaszewski <j.anaszewski@...sung.com>
> Signed-off-by: Andrzej Hajda <a.hajda@...sung.com>
> Acked-by: Kyungmin Park <kyungmin.park@...sung.com>
> Cc: Lee Jones <lee.jones@...aro.org>
> Cc: Chanwoo Choi <cw00.choi@...sung.com>
> Cc: Bryan Wu <cooloney@...il.com>
> Cc: Richard Purdie <rpurdie@...ys.net>
> ---
>  Documentation/devicetree/bindings/mfd/max77693.txt |   61 ++++++++++++++++++++
>  1 file changed, 61 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt b/Documentation/devicetree/bindings/mfd/max77693.txt
> index 38e6440..15c546e 100644
> --- a/Documentation/devicetree/bindings/mfd/max77693.txt
> +++ b/Documentation/devicetree/bindings/mfd/max77693.txt
> @@ -76,7 +76,53 @@ Optional properties:
>      Valid values: 4300000, 4700000, 4800000, 4900000
>      Default: 4300000
>  
> +- led : the LED submodule device node
> +
> +There are two LED outputs available - FLED1 and FLED2. Each of them can
> +control a separate LED or they can be connected together to double
> +the maximum current for a single connected LED. One LED is represented
> +by one child node.
> +
> +Required properties:
> +- compatible : Must be "maxim,max77693-led".
> +
> +Optional properties:
> +- maxim,trigger-type : Flash trigger type.
> +	Possible trigger types:
> +		LEDS_TRIG_TYPE_EDGE (0) - Rising edge of the signal triggers
> +			the flash,
> +		LEDS_TRIG_TYPE_LEVEL (1) - Strobe pulse length controls duration
> +			of the flash.
> +- maxim,boost-mode :
> +	In boost mode the device can produce up to 1.2A of total current
> +	on both outputs. The maximum current on each output is reduced
> +	to 625mA then. If not enabled explicitly, boost setting defaults to
> +	LEDS_BOOST_FIXED in case both current sources are used.
> +	Possible values:
> +		LEDS_BOOST_OFF (0) - no boost,
> +		LEDS_BOOST_ADAPTIVE (1) - adaptive mode,
> +		LEDS_BOOST_FIXED (2) - fixed mode.
> +- maxim,boost-mvout : Output voltage of the boost module in millivolts.
> +- maxim,mvsys-min : Low input voltage level in millivolts. Flash is not fired
> +	if chip estimates that system voltage could drop below this level due
> +	to flash power consumption.
> +
> +Required properties of the LED child node:
> +- led-sources : see Documentation/devicetree/bindings/leds/common.txt;
> +		device current output identifiers: 0 - FLED1, 1 - FLED2
> +
> +Optional properties of the LED child node:
> +- label : see Documentation/devicetree/bindings/leds/common.txt
> +- max-microamp : see Documentation/devicetree/bindings/leds/common.txt
> +		Range: 15625 - 250000
> +- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
> +		Range: 15625 - 1000000
> +- flash-timeout-us : see Documentation/devicetree/bindings/leds/common.txt
> +		Range: 62500 - 1000000
> +
>  Example:
> +#include <dt-bindings/leds/common.h>
> +
>  	max77693@66 {
>  		compatible = "maxim,max77693";
>  		reg = <0x66>;
> @@ -117,5 +163,20 @@ Example:
>  			maxim,thermal-regulation-celsius = <75>;
>  			maxim,battery-overcurrent-microamp = <3000000>;
>  			maxim,charge-input-threshold-microvolt = <4300000>;
> +
> +		led {
> +			compatible = "maxim,max77693-led";
> +			maxim,trigger-type = <LEDS_TRIG_TYPE_LEVEL>;
> +			maxim,boost-mode = <LEDS_BOOST_FIXED>;
> +			maxim,boost-mvout = <5000>;
> +			maxim,mvsys-min = <2400>;
> +
> +			camera_flash: flash-led {
> +				label = "max77693-flash";
> +				led-sources = <0>, <1>;
> +				max-microamp = <500000>;
> +				flash-max-microamp = <1250000>;
> +				flash-timeout-us = <1000000>;
> +			};
>  		};
>  	};


-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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