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 | 57 ++++++++++++++++++++
1 file changed, 57 insertions(+)
diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt b/Documentation/devicetree/bindings/mfd/max77693.txt
index 11921cc..f58d192 100644
--- a/Documentation/devicetree/bindings/mfd/max77693.txt
+++ b/Documentation/devicetree/bindings/mfd/max77693.txt
@@ -27,6 +27,53 @@ 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"
+
+Optional properties of "led-flash" node:
+- maxim,iout : Array of four maximum intensities in microamperes of the current
+ in order: flash1, flash2, torch1, torch2.
+ Range:
+ flash - 15625 - 1000000 (max 625000 if boost mode
+ is enabled for both outputs),
+ torch - 15625 - 250000.
+- maxim,trigger : Array of flags indicating which trigger can activate given led
+ in order: flash1, flash2, torch1, torch2.
+ 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,timeout : Array of timeouts in microseconds after which leds are
+ turned off in order: flash, torch.
+ Range:
+ flash: 62500 - 1000000,
+ torch: 0 (no timeout) - 15728000.
+- maxim,boost-mode : Array of the flash boost modes in order: flash1, flash2.
+ If both current outputs are connected then the same non-zero value
+ has to be set for them. This setting influences also maximum
+ current value for torch and flash modes:
+ flash1 and flash2 set to 1 or 2:
+ - max flash current: 1250 mA (625 mA on each output)
+ - max torch current: 500 mA (250 mA on each output)
+ flash1 or flash2 set to 0:
+ - max flash current: 1000 mA
+ - max torch current: 250 mA
+ Possible values:
+ 0 - no boost,
+ 1 - adaptive mode,
+ 2 - fixed mode.
+- 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 +99,14 @@ Example:
regulator-boot-on;
};
};
+ led_flash: led-flash {
+ compatible = "maxim,max77693-flash";
+ maxim,iout = <625000 625000 250000 250000>;
+ maxim,trigger = <5 5 6 6>;
+ maxim,trigger-type = <0 1>;
+ maxim,timeout = <500000 0>;
+ maxim,boost-mode = <1 1>;
+ maxim,boost-vout = <5000>;
+ maxim,vsys-min = <2400>;
+ };
};
--
1.7.9.5
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