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- Arctic Sand ARC2C0608 LED Backlight
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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
This commit is contained in:
Linus Torvalds 2017-05-03 12:11:44 -07:00
commit e897f267c5
4 changed files with 460 additions and 0 deletions
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33
Documentation/devicetree/bindings/leds/backlight/arcxcnn_bl.txt Normal file
View file

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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>;
};