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61 lines
1.7 KiB
61 lines
1.7 KiB
LEDs connected to is31fl319x LED controller chip |
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Required properties: |
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- compatible : Should be any of |
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"issi,is31fl3190" |
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"issi,is31fl3191" |
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"issi,is31fl3193" |
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"issi,is31fl3196" |
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"issi,is31fl3199" |
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"si-en,sn3199". |
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- #address-cells: Must be 1. |
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- #size-cells: Must be 0. |
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- reg: 0x64, 0x65, 0x66, or 0x67. |
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Optional properties: |
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- audio-gain-db : audio gain selection for external analog modulation input. |
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Valid values: 0 - 21, step by 3 (rounded down) |
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Default: 0 |
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- shutdown-gpios : Specifier of the GPIO connected to SDB pin of the chip. |
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Each led is represented as a sub-node of the issi,is31fl319x device. |
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There can be less leds subnodes than the chip can support but not more. |
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Required led sub-node properties: |
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- reg : number of LED line |
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Valid values: 1 - number of leds supported by the chip variant. |
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Optional led sub-node properties: |
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- label : see Documentation/devicetree/bindings/leds/common.txt. |
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- linux,default-trigger : |
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see Documentation/devicetree/bindings/leds/common.txt. |
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- led-max-microamp : (optional) |
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Valid values: 5000 - 40000, step by 5000 (rounded down) |
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Default: 20000 (20 mA) |
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Note: a driver will take the lowest of all led limits since the |
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chip has a single global setting. The lowest value will be chosen |
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due to the PWM specificity, where lower brightness is achieved |
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by reducing the dury-cycle of pulses and not the current, which |
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will always have its peak value equal to led-max-microamp. |
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Examples: |
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fancy_leds: leds@65 { |
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compatible = "issi,is31fl3196"; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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reg = <0x65>; |
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shutdown-gpios = <&gpio0 11 GPIO_ACTIVE_HIGH>; |
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red_aux: led@1 { |
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label = "red:aux"; |
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reg = <1>; |
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led-max-microamp = <10000>; |
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}; |
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green_power: led@5 { |
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label = "green:power"; |
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reg = <5>; |
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linux,default-trigger = "default-on"; |
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}; |
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};
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