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authorSascha Hauer <s.hauer@pengutronix.de>2015-03-03 08:11:01 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2015-03-03 08:11:01 +0100
commiteaa819409db6ac80fbd7c3d36450b2d1bec93576 (patch)
tree6cd5e0c7f8abe121af237b701ee9e0e1b6f7e40d /dts/Bindings/leds
parent0c9aadb6185e1d84746b632284bc89e4e4c80cd3 (diff)
downloadbarebox-eaa819409db6ac80fbd7c3d36450b2d1bec93576.tar.gz
barebox-eaa819409db6ac80fbd7c3d36450b2d1bec93576.tar.xz
dts: update to v4.0-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/leds')
-rw-r--r--dts/Bindings/leds/common.txt30
1 files changed, 30 insertions, 0 deletions
diff --git a/dts/Bindings/leds/common.txt b/dts/Bindings/leds/common.txt
index 2d88816dd..34811c57d 100644
--- a/dts/Bindings/leds/common.txt
+++ b/dts/Bindings/leds/common.txt
@@ -1,6 +1,19 @@
Common leds properties.
+LED and flash LED devices provide the same basic functionality as current
+regulators, but extended with LED and flash LED specific features like
+blinking patterns, flash timeout, flash faults and external flash strobe mode.
+
+Many LED devices expose more than one current output that can be connected
+to one or more discrete LED component. Since the arrangement of connections
+can influence the way of the LED device initialization, the LED components
+have to be tightly coupled with the LED device binding. They are represented
+by child nodes of the parent LED device binding.
+
Optional properties for child nodes:
+- led-sources : List of device current outputs the LED is connected to. The
+ outputs are identified by the numbers that must be defined
+ in the LED device binding documentation.
- label : The label for this LED. If omitted, the label is
taken from the node name (excluding the unit address).
@@ -14,6 +27,15 @@ Optional properties for child nodes:
"ide-disk" - LED indicates disk activity
"timer" - LED flashes at a fixed, configurable rate
+- max-microamp : maximum intensity in microamperes of the LED
+ (torch LED for flash devices)
+- flash-max-microamp : maximum intensity in microamperes of the
+ flash LED; it is mandatory if the LED should
+ support the flash mode
+- flash-timeout-us : timeout in microseconds after which the flash
+ LED is turned off
+
+
Examples:
system-status {
@@ -21,3 +43,11 @@ system-status {
linux,default-trigger = "heartbeat";
...
};
+
+camera-flash {
+ label = "Flash";
+ led-sources = <0>, <1>;
+ max-microamp = <50000>;
+ flash-max-microamp = <320000>;
+ flash-timeout-us = <500000>;
+};