| # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/leds/backlight/arc,arc2c0608.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: ArcticSand arc2c0608 LED driver |
| |
| description: | |
| The ArcticSand arc2c0608 LED driver provides ultra |
| efficient notebook backlighting. Optional properties not |
| specified will default to values in IC EPROM. |
| |
| Datasheet: |
| https://www.murata.com/-/media/webrenewal/products/power/power-semiconductor/overview/lineup/led-boost/arc2/arc2c0608.ashx. |
| |
| maintainers: |
| - Brian Dodge <bdodge@arcticsand.com> |
| |
| allOf: |
| - $ref: /schemas/leds/common.yaml |
| |
| properties: |
| compatible: |
| const: arc,arc2c0608 |
| |
| reg: |
| maxItems: 1 |
| |
| default-brightness: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| minimum: 0 |
| maximum: 4095 |
| |
| led-sources: |
| $ref: /schemas/types.yaml#/definitions/uint32-array |
| description: List of enabled channels |
| items: |
| enum: [0, 1, 2, 3, 4, 5] |
| minItems: 1 |
| uniqueItems: true |
| |
| arc,led-config-0: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| description: Fading speed (period between intensity |
| steps) |
| |
| arc,led-config-1: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| description: If set, sets ILED_CONFIG register. Used for |
| fine tuning the maximum LED current. |
| |
| arc,dim-freq: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| description: PWM mode frequency setting (bits [3:0] used) |
| |
| arc,comp-config: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| description: Setting for register CONFIG_COMP which |
| controls internal resitances, feed forward freqs, |
| and initial VOUT at startup. Consult the datasheet. |
| |
| arc,filter-config: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| description: RC and PWM Filter settings. |
| Bit Assignment |
| 7654 3 2 1 0 |
| xxxx RCF1 RCF0 PWM1 PWM0 |
| RCF statuses PWM Filter Statues |
| 00 = OFF (default) 00 = OFF (default) |
| 01 = LOW 01 = 2 STEPS |
| 10 - MEDIUM 10 = 4 STEPS |
| 11 = HIGH 11 = 8 STEPS |
| |
| arc,trim-config: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| description: Sets percentage increase of Maximum LED |
| Current. |
| 0x00 = 0% increase. |
| 0x20 = 20.2%. |
| 0x3F = 41.5% |
| |
| label: true |
| |
| linux,default-trigger: true |
| |
| additionalProperties: false |
| |
| required: |
| - compatible |
| - reg |
| |
| examples: |
| - | |
| i2c { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| led-controller@30 { |
| compatible = "arc,arc2c0608"; |
| reg = <0x30>; |
| default-brightness = <500>; |
| label = "lcd-backlight"; |
| linux,default-trigger = "backlight"; |
| led-sources = <0 1 2 5>; |
| }; |
| }; |
| ... |
