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