projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 4add0664 KM |
1 | lp855x bindings |
| 2 | ||
| 3 | Required properties: | |
| 4 | - compatible: "ti,lp8550", "ti,lp8551", "ti,lp8552", "ti,lp8553", | |
| 5812c13a | 5 | "ti,lp8555", "ti,lp8556", "ti,lp8557" |
| 4add0664 KM |
6 | - reg: I2C slave address (u8) |
| 7 | - dev-ctrl: Value of DEVICE CONTROL register (u8). It depends on the device. | |
| 8 | ||
| 9 | Optional properties: | |
| 10 | - bl-name: Backlight device name (string) | |
| 11 | - init-brt: Initial value of backlight brightness (u8) | |
| 12 | - pwm-period: PWM period value. Set only PWM input mode used (u32) | |
| 13 | - rom-addr: Register address of ROM area to be updated (u8) | |
| 14 | - rom-val: Register value to be updated (u8) | |
| 829b030e | 15 | - power-supply: Regulator which controls the 3V rail |
| 4add0664 KM |
16 | |
| 17 | Example: | |
| 18 | ||
| 5812c13a MK |
19 | /* LP8555 */ |
| 20 | backlight@2c { | |
| 21 | compatible = "ti,lp8555"; | |
| 22 | reg = <0x2c>; | |
| 23 | ||
| 24 | dev-ctrl = /bits/ 8 <0x00>; | |
| 25 | pwm-period = <10000>; | |
| 26 | ||
| 27 | /* 4V OV, 4 output LED0 string enabled */ | |
| 28 | rom_14h { | |
| 29 | rom-addr = /bits/ 8 <0x14>; | |
| 30 | rom-val = /bits/ 8 <0xcf>; | |
| 31 | }; | |
| 32 | ||
| 33 | /* Heavy smoothing, 24ms ramp time step */ | |
| 34 | rom_15h { | |
| 35 | rom-addr = /bits/ 8 <0x15>; | |
| 36 | rom-val = /bits/ 8 <0xc7>; | |
| 37 | }; | |
| 38 | ||
| 39 | /* 4 output LED1 string enabled */ | |
| 40 | rom_19h { | |
| 41 | rom-addr = /bits/ 8 <0x19>; | |
| 42 | rom-val = /bits/ 8 <0x0f>; | |
| 43 | }; | |
| 44 | }; | |
| 45 | ||
| 4add0664 KM |
46 | /* LP8556 */ |
| 47 | backlight@2c { | |
| 48 | compatible = "ti,lp8556"; | |
| 49 | reg = <0x2c>; | |
| 50 | ||
| 51 | bl-name = "lcd-bl"; | |
| 52 | dev-ctrl = /bits/ 8 <0x85>; | |
| 53 | init-brt = /bits/ 8 <0x10>; | |
| 54 | }; | |
| 55 | ||
| 56 | /* LP8557 */ | |
| 57 | backlight@2c { | |
| 58 | compatible = "ti,lp8557"; | |
| 59 | reg = <0x2c>; | |
| 829b030e | 60 | power-supply = <&backlight_vdd>; |
| 4add0664 KM |
61 | |
| 62 | dev-ctrl = /bits/ 8 <0x41>; | |
| 63 | init-brt = /bits/ 8 <0x0a>; | |
| 64 | ||
| 65 | /* 4V OV, 4 output LED string enabled */ | |
| 66 | rom_14h { | |
| 67 | rom-addr = /bits/ 8 <0x14>; | |
| 68 | rom-val = /bits/ 8 <0xcf>; | |
| 69 | }; | |
| 70 | }; |