diff options
Diffstat (limited to 'Documentation/devicetree/bindings/leds/backlight/arc,arc2c0608.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/leds/backlight/arc,arc2c0608.yaml | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/backlight/arc,arc2c0608.yaml b/Documentation/devicetree/bindings/leds/backlight/arc,arc2c0608.yaml new file mode 100644 index 000000000000..786beced5590 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/arc,arc2c0608.yaml @@ -0,0 +1,108 @@ +# 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>; + }; + }; +... |
