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media: dt: bindings: Document DT bindings for Analog devices as3645a 

Document DT bindings for Analog Devices as3645a flash LED controller which
also supports an indicator LED.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Sakari Ailus 2015-06-06 07:10:59 -04:00 committed by Mauro Carvalho Chehab
parent 40cefffd35
commit 535a218d26
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Documentation/devicetree/bindings/leds/ams,as3645a.txt Normal file
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Analog devices AS3645A device tree bindings
The AS3645A flash LED controller can drive two LEDs, one high current
flash LED and one indicator LED. The high current flash LED can be
used in torch mode as well.
Ranges below noted as [a, b] are closed ranges between a and b, i.e. a
and b are included in the range.
Please also see common.txt in the same directory.
Required properties
===================
compatible : Must be "ams,as3645a".
reg : The I2C address of the device. Typically 0x30.
Required properties of the "flash" child node
=============================================
flash-timeout-us: Flash timeout in microseconds. The value must be in
the range [100000, 850000] and divisible by 50000.
flash-max-microamp: Maximum flash current in microamperes. Has to be
in the range between [200000, 500000] and
divisible by 20000.
led-max-microamp: Maximum torch (assist) current in microamperes. The
value must be in the range between [20000, 160000] and
divisible by 20000.
ams,input-max-microamp: Maximum flash controller input current. The
value must be in the range [1250000, 2000000]
and divisible by 50000.
Optional properties of the "flash" child node
=============================================
label : The label of the flash LED.
Required properties of the "indicator" child node
=================================================
led-max-microamp: Maximum indicator current. The allowed values are
2500, 5000, 7500 and 10000.
Optional properties of the "indicator" child node
=================================================
label : The label of the indicator LED.
Example
=======
as3645a@30 {
reg = <0x30>;
compatible = "ams,as3645a";
flash {
flash-timeout-us = <150000>;
flash-max-microamp = <320000>;
led-max-microamp = <60000>;
ams,input-max-microamp = <1750000>;
label = "as3645a:flash";
};
indicator {
led-max-microamp = <10000>;
label = "as3645a:indicator";
};
};