Kernel-4.18.0-80.el8_leds-bcm6358

LEDs connected to Broadcom BCM6358 controller

This controller is present on BCM6358 and BCM6368.
In these SoCs there are Serial LEDs (LEDs connected to a 74x164 controller),
which can either be controlled by software (exporting the 74x164 as spi-gpio.
See Documentation/devicetree/bindings/gpio/gpio-74x164.txt), or
by hardware using this driver.

Required properties:

• compatible : should be “brcm,bcm6358-leds”.
• #address-cells : must be 1.
• #size-cells : must be 0.
• reg : BCM6358 LED controller address and size.

Optional properties:

• brcm,clk-div : SCK signal divider. Possible values are 1, 2, 4 and 8.
  Default : 1
• brcm,clk-dat-low : Boolean, makes clock and data signals active low.
  Default : false

Each LED is represented as a sub-node of the brcm,bcm6358-leds device.

LED sub-node required properties:

• reg : LED pin number (only LEDs 0 to 31 are valid).

LED sub-node optional properties:

• label : see Documentation/devicetree/bindings/leds/common.txt
• active-low : Boolean, makes LED active low.
  Default : false
• default-state : see
  Documentation/devicetree/bindings/leds/common.txt
• linux,default-trigger : see
  Documentation/devicetree/bindings/leds/common.txt

Examples:
Scenario 1 : BCM6358
leds0: led-controller@fffe00d0 {
compatible = “brcm,bcm6358-leds”;
#address-cells = <1>;
#size-cells = <0>;
reg = <0xfffe00d0 0x8>;

    alarm_white {
        reg = <0>;
        active-low;
        label = "white:alarm";
    };
    tv_white {
        reg = <2>;
        active-low;
        label = "white:tv";
    };
    tel_white {
        reg = <3>;
        active-low;
        label = "white:tel";
    };
    adsl_white {
        reg = <4>;
        active-low;
        label = "white:adsl";
    };
};

Scenario 2 : BCM6368
leds0: led-controller@100000d0 {
compatible = “brcm,bcm6358-leds”;
#address-cells = <1>;
#size-cells = <0>;
reg = <0x100000d0 0x8>;
brcm,pol-low;
brcm,clk-div = <4>;

    power_red {
        reg = <0>;
        active-low;
        label = "red:power";
    };
    power_green {
        reg = <1>;
        active-low;
        label = "green:power";
        default-state = "on";
    };
    power_blue {
        reg = <2>;
        label = "blue:power";
    };
    broadband_red {
        reg = <3>;
        active-low;
        label = "red:broadband";
    };
    broadband_green {
        reg = <4>;
        label = "green:broadband";
    };
    broadband_blue {
        reg = <5>;
        active-low;
        label = "blue:broadband";
    };
    wireless_red {
        reg = <6>;
        active-low;
        label = "red:wireless";
    };
    wireless_green {
        reg = <7>;
        active-low;
        label = "green:wireless";
    };
    wireless_blue {
        reg = <8>;
        label = "blue:wireless";
    };
    phone_red {
        reg = <9>;
        active-low;
        label = "red:phone";
    };
    phone_green {
        reg = <10>;
        active-low;
        label = "green:phone";
    };
    phone_blue {
        reg = <11>;
        label = "blue:phone";
    };
    upgrading_red {
        reg = <12>;
        active-low;
        label = "red:upgrading";
    };
    upgrading_green {
        reg = <13>;
        active-low;
        label = "green:upgrading";
    };
    upgrading_blue {
        reg = <14>;
        label = "blue:upgrading";
    };
};