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"; }; };