summaryrefslogtreecommitdiff
path: root/Documentation/devicetree
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-03 12:11:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-03 12:11:44 -0700
commite897f267c51812bfecec45771a2d835c1a2bdacf (patch)
tree5a612f852ac0f34835f1afc592a68b67a848e97f /Documentation/devicetree
parent221656e7c4ce342b99c31eca96c1cbb6d1dce45f (diff)
parente739c5bb20bebb74028d9262255dc1e470b60fcf (diff)
Merge tag 'backlight-next-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight update from Lee Jones: "New Arctic Sand ARC2C0608 LED Backlight driver" * tag 'backlight-next-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: backlight: Add support for Arctic Sand LED backlight driver chips dt-bindings: backlight: arcxcnn: Supply bindings for Arctic Sand backlight
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/leds/backlight/arcxcnn_bl.txt33
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/backlight/arcxcnn_bl.txt b/Documentation/devicetree/bindings/leds/backlight/arcxcnn_bl.txt
new file mode 100644
index 000000000000..230abdefd6e7
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/backlight/arcxcnn_bl.txt
@@ -0,0 +1,33 @@
+Binding for ArcticSand arc2c0608 LED driver
+
+Required properties:
+- compatible: should be "arc,arc2c0608"
+- reg: slave address
+
+Optional properties:
+- default-brightness: brightness value on boot, value from: 0-4095
+- label: The name of the backlight device
+ See Documentation/devicetree/bindings/leds/common.txt
+- led-sources: List of enabled channels from 0 to 5.
+ See Documentation/devicetree/bindings/leds/common.txt
+
+- arc,led-config-0: setting for register ILED_CONFIG_0
+- arc,led-config-1: setting for register ILED_CONFIG_1
+- arc,dim-freq: PWM mode frequence setting (bits [3:0] used)
+- arc,comp-config: setting for register CONFIG_COMP
+- arc,filter-config: setting for register FILTER_CONFIG
+- arc,trim-config: setting for register IMAXTUNE
+
+Note: Optional properties not specified will default to values in IC EPROM
+
+Example:
+
+arc2c0608@30 {
+ compatible = "arc,arc2c0608";
+ reg = <0x30>;
+ default-brightness = <500>;
+ label = "lcd-backlight";
+ linux,default-trigger = "backlight";
+ led-sources = <0 1 2 5>;
+};
+