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TI LMU (Lighting Management Unit) device tree bindings
TI LMU driver supports lighting devices below.
Name Child nodes
------ ---------------------------------
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,lm3631"
"ti,lm3632"
"ti,lm3633"
"ti,lm3695"
"ti,lm3697"
- reg: I2C slave address.
0x11 for LM3632
0x29 for LM3631
0x36 for LM3633, LM3697
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
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";
enable-gpios = <&pioC 0 GPIO_ACTIVE_HIGH>,
<&pioC 1 GPIO_ACTIVE_HIGH>;
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";
};
};
|
