This patch adds device tree binding documentation for
the flash cell of the Maxim max77693 multifunctional device.
Signed-off-by: Jacek Anaszewski <j.anaszewski@xxxxxxxxxxx>
Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Cc: Lee Jones <lee.jones@xxxxxxxxxx>
Cc: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Cc: Bryan Wu <cooloney@xxxxxxxxx>
Cc: Richard Purdie <rpurdie@xxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
---
Documentation/devicetree/bindings/mfd/max77693.txt | 73 ++++++++++++++++++++
1 file changed, 73 insertions(+)
diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt b/Documentation/devicetree/bindings/mfd/max77693.txt
index 38e6440..cd94078 100644
--- a/Documentation/devicetree/bindings/mfd/max77693.txt
+++ b/Documentation/devicetree/bindings/mfd/max77693.txt
@@ -76,7 +76,66 @@ 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,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.
+ Valid values: 3300 - 5500, step by 25 (rounded down)
+ Default: 3300
+- 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.
+ Valid values: 2400 - 3400, step by 33 (rounded down)
+ Default: 2400
+
+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
+ * configuration with FLED outputs separated:
+ Valid values: 15625 - 250000, step by 15625 (rounded down)
+ Default: 250000
+ * configuration with FLED outputs soldered together:
+ Valid values: 15625 - 500000, step by 15625 (rounded down)
+ Default: 500000
+- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
+ Valid values in LEDS_BOOST_ADAPTIVE and LEDS_BOOST_FIXED modes:
+ * configuration with FLED outputs separated:
+ 15625 - 625000, step by 15625 (rounded down)
+ Default: 625000
+ * configuration with FLED outputs soldered together:
+ 15625 - 1250000, step by 15625 (rounded down)
+ Default: 1250000
+ Valid values in LEDS_BOOST_OFF mode (single FLED is used):
+ 15625 - 1000000, step by 15625 (rounded down)
+ Default: 1000000
+- flash-timeout-us : see Documentation/devicetree/bindings/leds/common.txt
+ Valid values: 62500 - 1000000, step by 62500 (rounded down)
+ Default: 1000000
+
Example:
+#include <dt-bindings/leds/common.h>
+
max77693@66 {
compatible = "maxim,max77693";
reg = <0x66>;
@@ -117,5 +176,19 @@ Example:
maxim,thermal-regulation-celsius = <75>;
maxim,battery-overcurrent-microamp = <3000000>;
maxim,charge-input-threshold-microvolt = <4300000>;
+
+ led {
+ compatible = "maxim,max77693-led";
+ 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>;
+ };
};
};
--
1.7.9.5
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