Kernel-4.18.0-80.el8_leds-is31fl319x

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

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>;

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";
};

};