| Message ID | 1427809965-25540-5-git-send-email-j.anaszewski@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
I've just pushed PATCH v5 - it adds more precise description of current settings constraints. On 03/31/2015 03:52 PM, 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.anaszewski@samsung.com> > Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> > Acked-by: Kyungmin Park <kyungmin.park@samsung.com> > Cc: Lee Jones <lee.jones@linaro.org> > Cc: Chanwoo Choi <cw00.choi@samsung.com> > Cc: Bryan Wu <cooloney@gmail.com> > Cc: Richard Purdie <rpurdie@rpsys.net> > Cc: devicetree@vger.kernel.org > --- > Documentation/devicetree/bindings/mfd/max77693.txt | 61 ++++++++++++++++++++ > 1 file changed, 61 insertions(+) > > diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt b/Documentation/devicetree/bindings/mfd/max77693.txt > index 38e6440..deb832f 100644 > --- a/Documentation/devicetree/bindings/mfd/max77693.txt > +++ b/Documentation/devicetree/bindings/mfd/max77693.txt > @@ -76,7 +76,54 @@ 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 > + Valid values: 15625 - 250000, step by 15625 (rounded down) > + Default: 250000 > +- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt > + Valid values: 15625 - 1000000, step by 15625 (rounded down) > + Default: 1000000 when boost mode is off and 625000 otherwise > +- 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 +164,19 @@ 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>; > + }; > }; > }; >
diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt b/Documentation/devicetree/bindings/mfd/max77693.txt index 38e6440..deb832f 100644 --- a/Documentation/devicetree/bindings/mfd/max77693.txt +++ b/Documentation/devicetree/bindings/mfd/max77693.txt @@ -76,7 +76,54 @@ 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 + Valid values: 15625 - 250000, step by 15625 (rounded down) + Default: 250000 +- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt + Valid values: 15625 - 1000000, step by 15625 (rounded down) + Default: 1000000 when boost mode is off and 625000 otherwise +- 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 +164,19 @@ 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>; + }; }; };