lp855x bindings Required properties: - compatible: "ti,lp8550", "ti,lp8551", "ti,lp8552", "ti,lp8553", "ti,lp8555", "ti,lp8556", "ti,lp8557" - reg: I2C slave address (u8) - dev-ctrl: Value of DEVICE CONTROL register (u8). It depends on the device. Optional properties: - bl-name: Backlight device name (string) - init-brt: Initial value of backlight brightness (u8) - pwm-period: PWM period value. Set only PWM input mode used (u32) - rom-addr: Register address of ROM area to be updated (u8) - rom-val: Register value to be updated (u8) - power-supply: Regulator which controls the 3V rail - enable-supply: Regulator which controls the EN/VDDIO input Example: /* LP8555 */ backlight@2c { compatible = "ti,lp8555"; reg = <0x2c>; dev-ctrl = /bits/ 8 <0x00>; pwm-period = <10000>; /* 4V OV, 4 output LED0 string enabled */ rom_14h { rom-addr = /bits/ 8 <0x14>; rom-val = /bits/ 8 <0xcf>; }; /* Heavy smoothing, 24ms ramp time step */ rom_15h { rom-addr = /bits/ 8 <0x15>; rom-val = /bits/ 8 <0xc7>; }; /* 4 output LED1 string enabled */ rom_19h { rom-addr = /bits/ 8 <0x19>; rom-val = /bits/ 8 <0x0f>; }; }; /* LP8556 */ backlight@2c { compatible = "ti,lp8556"; reg = <0x2c>; bl-name = "lcd-bl"; dev-ctrl = /bits/ 8 <0x85>; init-brt = /bits/ 8 <0x10>; }; /* LP8557 */ backlight@2c { compatible = "ti,lp8557"; reg = <0x2c>; enable-supply = <&backlight_vddio>; power-supply = <&backlight_vdd>; dev-ctrl = /bits/ 8 <0x41>; init-brt = /bits/ 8 <0x0a>; /* 4V OV, 4 output LED string enabled */ rom_14h { rom-addr = /bits/ 8 <0x14>; rom-val = /bits/ 8 <0xcf>; }; };