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