On Tue, 28 Apr 2015, Jacek Anaszewski wrote:
This patch adds device tree binding documentation for
the flash cell of the Maxim max77693 multifunctional device.
Signed-off-by: Jacek Anaszewski j.anaszew...@samsung.com
Signed-off-by: Andrzej Hajda a.ha...@samsung.com
Acked-by: Kyungmin Park kyungmin.p...@samsung.com
Acked-by: Sakari Ailus sakari.ai...@linux.intel.com
Cc: Lee Jones lee.jo...@linaro.org
Cc: Chanwoo Choi cw00.c...@samsung.com
Cc: Bryan Wu coolo...@gmail.com
Cc: Richard Purdie rpur...@rpsys.net
Cc: devicet...@vger.kernel.org
---
Documentation/devicetree/bindings/mfd/max77693.txt | 67
1 file changed, 67 insertions(+)
Applied with Bryan's Ack.
diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt
b/Documentation/devicetree/bindings/mfd/max77693.txt
index 38e6440..d342584 100644
--- a/Documentation/devicetree/bindings/mfd/max77693.txt
+++ b/Documentation/devicetree/bindings/mfd/max77693.txt
@@ -76,7 +76,60 @@ Optional properties:
Valid values: 430, 470, 480, 490
Default: 430
+- 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 for the LED child node:
+- led-sources : see Documentation/devicetree/bindings/leds/common.txt;
+ device current output identifiers: 0 - FLED1, 1 - FLED2
+- led-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
+ Valid values for a LED connected to one FLED output:
+ 15625 - 25, step by 15625 (rounded down)
+ Valid values for a LED connected to both FLED outputs:
+ 15625 - 50, step by 15625 (rounded down)
+- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
+ Valid values for a single LED connected to one FLED output
+ (boost mode must be turned off):
+ 15625 - 100, step by 15625 (rounded down)
+ Valid values for a single LED connected to both FLED outputs:
+ 15625 - 125, step by 15625 (rounded down)
+ Valid values for two LEDs case:
+ 15625 - 625000, step by 15625 (rounded down)
+- flash-max-timeout-us : see
Documentation/devicetree/bindings/leds/common.txt
+ Valid values: 62500 - 100, step by 62500 (rounded down)
+
+Optional properties for the LED child node:
+- label : see Documentation/devicetree/bindings/leds/common.txt
+
Example:
+#include dt-bindings/leds/common.h
+
max77693@66 {
compatible = maxim,max77693;
reg = 0x66;
@@ -117,5 +170,19 @@ Example:
maxim,thermal-regulation-celsius = 75;
maxim,battery-overcurrent-microamp = 300;
maxim,charge-input-threshold-microvolt = 430;
+
+ 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;
+ led-max-microamp = 50;
+ flash-max-microamp = 125;
+ flash-max-timeout-us = 100;
+ };
};
};
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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