This patch adds device tree binding documentation for
the flash cell of the Maxim max77693 multifunctional device.
Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Pawel Moll <pawel.moll@xxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Ian Campbell <ijc+devicetree@xxxxxxxxxxxxxx>
Cc: Kumar Gala <galak@xxxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/mfd/max77693.txt | 62 ++++++++++++++++++++
1 file changed, 62 insertions(+)
diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt b/Documentation/devicetree/bindings/mfd/max77693.txt
index 11921cc..0c3db3d 100644
--- a/Documentation/devicetree/bindings/mfd/max77693.txt
+++ b/Documentation/devicetree/bindings/mfd/max77693.txt
@@ -27,6 +27,55 @@ Optional properties:
[*] refer Documentation/devicetree/bindings/regulator/regulator.txt
+Optional node:
+- led-flash : the LED submodule device node
+
+Required properties of "led-flash" node:
+- compatible : must be "maxim,max77693-flash"
+- maxim,num-leds : number of connected leds
+ Possible values: 1 or 2.
+- maxim,fleds : array of current outputs in order: fled1, fled2
+ Note: both current outputs can be connected to a single led
+ Possible values:
+ 0 - the output is left disconnected,
+ 1 - a diode is connected to the output.
+
+Optional properties of "led-flash" node:
+- 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 maxim,num-leds == <2> boost must be enabled
+ (it defaults to 1 if not set):
+ Possible values:
+ 0 - no boost,
+ 1 - adaptive mode,
+ 2 - fixed mode.
+- iout-torch : Array of maximum intensities in microamperes of the torch
+ led currents in order: fled1, fled2.
+ 15625 - 250000
+- iout-flash : Array of maximum intensities in microamperes of the flash
+ led currents in order: fled1, fled2.
+ Range:
+ 15625 - 1000000 (max 625000 if boost mode is enabled)
+- flash-timeout : timeout in microseconds after which flash led
+ is turned off
+ Range:
+ 62500 - 1000000
+- maxim,trigger : Array of flags indicating which trigger can activate given led
+ in order: fled1, fled2
+ Possible flag values (can be combined):
+ 1 - FLASH pin of the chip,
+ 2 - TORCH pin of the chip,
+ 4 - software via I2C command.
+- maxim,trigger-type : Array of trigger types in order: flash, torch.
+ Possible trigger types:
+ 0 - Rising edge of the signal triggers the flash/torch,
+ 1 - Signal level controls duration of the flash/torch.
+- maxim,boost-vout : Output voltage of the boost module in millivolts.
+- maxim,vsys-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.
+
Example:
max77693@66 {
compatible = "maxim,max77693";
@@ -52,4 +101,17 @@ Example:
regulator-boot-on;
};
};
+ led_flash: led-flash {
+ compatible = "maxim,max77693-flash";
+ iout-torch = <500000 0>;
+ iout-flash = <1250000 0>;
+ flash-timeout = <1000000 1000000>;
+ maxim,num-leds = <1>;
+ maxim,fleds = <1 1>;
+ maxim,trigger = <7 7>;
+ maxim,trigger-type = <0 1>;
+ maxim,boost-mode = <1>;
+ maxim,boost-vout = <5000>;
+ maxim,vsys-min = <2400>;
+ };
};
--
1.7.9.5
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