Kernel-4.18.0-80.el8_ti-lmu

TI LMU (Lighting Management Unit) device tree bindings

TI LMU driver supports lighting devices below.

Name Child nodes

---

LM3532 Backlight
LM3631 Backlight and regulator
LM3632 Backlight and regulator
LM3633 Backlight, LED and fault monitor
LM3695 Backlight
LM3697 Backlight and fault monitor

Required properties:

• compatible: Should be one of:

          "ti,lm3532"
          "ti,lm3631"
          "ti,lm3632"
          "ti,lm3633"
          "ti,lm3695"
          "ti,lm3697"
  

• reg: I2C slave address.

   0x11 for LM3632
   0x29 for LM3631
   0x36 for LM3633, LM3697
   0x38 for LM3532
   0x63 for LM3695
  

Optional property:

• enable-gpios: A GPIO specifier for hardware enable pin.

Required node:

• backlight: All LMU devices have backlight child nodes.

         For the properties, please refer to [1].
  

Optional nodes:

• fault-monitor: Hardware fault monitoring driver for LM3633 and LM3697.
  Required properties:
  • compatible: Should be one of:

            "ti,lm3633-fault-monitor"
            "ti,lm3697-fault-monitor"
    

• leds: LED properties for LM3633. Please refer to [2].
• regulators: Regulator properties for LM3631 and LM3632.

          Please refer to [3].
  

[1] ../leds/backlight/ti-lmu-backlight.txt
[2] ../leds/leds-lm3633.txt
[3] ../regulator/lm363x-regulator.txt

lm3532@38 {
compatible = “ti,lm3532”;
reg = <0x38>;

enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>;

backlight {
    compatible = "ti,lm3532-backlight";

    lcd {
        led-sources = <0 1 2>;
        ramp-up-msec = <30>;
        ramp-down-msec = <0>;
    };
};

};

lm3631@29 {
compatible = “ti,lm3631”;
reg = <0x29>;

regulators {
    compatible = "ti,lm363x-regulator";

    vboost {
        regulator-name = "lcd_boost";
        regulator-min-microvolt = <4500000>;
        regulator-max-microvolt = <6350000>;
        regulator-always-on;
    };

    vcont {
        regulator-name = "lcd_vcont";
        regulator-min-microvolt = <1800000>;
        regulator-max-microvolt = <3300000>;
    };

    voref {
        regulator-name = "lcd_voref";
        regulator-min-microvolt = <4000000>;
        regulator-max-microvolt = <6000000>;
    };

    vpos {
        regulator-name = "lcd_vpos";
        regulator-min-microvolt = <4000000>;
        regulator-max-microvolt = <6000000>;
        regulator-boot-on;
    };

    vneg {
        regulator-name = "lcd_vneg";
        regulator-min-microvolt = <4000000>;
        regulator-max-microvolt = <6000000>;
        regulator-boot-on;
    };
};

backlight {
    compatible = "ti,lm3631-backlight";

    lcd_bl {
        led-sources = <0 1>;
        ramp-up-msec = <300>;
    };
};

};

lm3632@11 {
compatible = “ti,lm3632”;
reg = <0x11>;

enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>; /* PC2 */

regulators {
    compatible = "ti,lm363x-regulator";

    ti,lcm-en1-gpio = <&pioC 0 GPIO_ACTIVE_HIGH>; /* PC0 */
    ti,lcm-en2-gpio = <&pioC 1 GPIO_ACTIVE_HIGH>; /* PC1 */

    vboost {
        regulator-name = "lcd_boost";
        regulator-min-microvolt = <4500000>;
        regulator-max-microvolt = <6400000>;
        regulator-always-on;
    };

    vpos {
        regulator-name = "lcd_vpos";
        regulator-min-microvolt = <4000000>;
        regulator-max-microvolt = <6000000>;
    };

    vneg {
        regulator-name = "lcd_vneg";
        regulator-min-microvolt = <4000000>;
        regulator-max-microvolt = <6000000>;
    };
};

backlight {
    compatible = "ti,lm3632-backlight";

    pwms = <&pwm0 0 10000 0>; /* pwm number, period, polarity */
    pwm-names = "lmu-backlight";

    lcd {
        led-sources = <0 1>;
        pwm-period = <10000>;
    };
};

};

lm3633@36 {
compatible = “ti,lm3633”;
reg = <0x36>;

enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>;

backlight {
    compatible = "ti,lm3633-backlight";

    main {
        label = "main_lcd";
        led-sources = <1 2>;
        ramp-up-msec = <500>;
        ramp-down-msec = <500>;
    };

    front {
        label = "front_lcd";
        led-sources = <0>;
        ramp-up-msec = <1000>;
        ramp-down-msec = <0>;
    };
};

leds {
    compatible = "ti,lm3633-leds";

    chan1 {
        label = "status";
        led-sources = <1>;
        led-max-microamp = <6000>;
    };

    chan345 {
        label = "rgb";
        led-sources = <3 4 5>;
        led-max-microamp = <10000>;
    };
};

fault-monitor {
    compatible = "ti,lm3633-fault-monitor";
};

};

lm3695@63 {
compatible = “ti,lm3695”;
reg = <0x63>;

enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>;

backlight {
    compatible = "ti,lm3695-backlight";

    lcd {
        label = "bl";
        led-sources = <0 1>;
    };
};

};

lm3697@36 {
compatible = “ti,lm3697”;
reg = <0x36>;

enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>;

backlight {
    compatible = "ti,lm3697-backlight";

    lcd {
        led-sources = <0 1 2>;
        ramp-up-msec = <200>;
        ramp-down-msec = <200>;
    };
};

fault-monitor {
    compatible = "ti,lm3697-fault-monitor";
};

};