Based on kernel version 6.8
. Page generated on 2024-03-11 21:26 EST
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | * Texas Instruments LM36274 4-Channel LCD Backlight Driver w/Integrated Bias The LM36274 is an integrated four-channel WLED driver and LCD bias supply. The backlight boost provides the power to bias four parallel LED strings with up to 29V total output voltage. The 11-bit LED current is programmable via the I2C bus and/or controlled via a logic level PWM input from 60 uA to 30 mA. Parent device properties are documented in Documentation/devicetree/bindings/mfd/ti-lmu.txt Regulator properties are documented in Documentation/devicetree/bindings/regulator/lm363x-regulator.txt Required backlight properties: - compatible: "ti,lm36274-backlight" - reg : 0 - #address-cells : 1 - #size-cells : 0 - led-sources : Indicates which LED strings will be enabled. Values from 0-3, sources is 0 based so strings will be source value + 1. Optional backlight properties: - label : see Documentation/devicetree/bindings/leds/common.txt - linux,default-trigger : see Documentation/devicetree/bindings/leds/common.txt Example: HVLED string 1 and 3 are controlled by control bank A and HVLED 2 string is controlled by control bank B. lm36274@11 { compatible = "ti,lm36274"; #address-cells = <1>; #size-cells = <0>; reg = <0x11>; enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>; regulators { #address-cells = <1>; #size-cells = <0>; compatible = "ti,lm363x-regulator"; enable-gpios = <&pioC 0 GPIO_ACTIVE_HIGH>, <&pioC 1 GPIO_ACTIVE_HIGH>; vboost { regulator-name = "lcd_boost"; regulator-min-microvolt = <4000000>; regulator-max-microvolt = <7150000>; regulator-always-on; }; vpos { regulator-name = "lcd_vpos"; regulator-min-microvolt = <4000000>; regulator-max-microvolt = <6500000>; }; vneg { regulator-name = "lcd_vneg"; regulator-min-microvolt = <4000000>; regulator-max-microvolt = <6500000>; }; }; backlight { #address-cells = <1>; #size-cells = <0>; compatible = "ti,lm36274-backlight"; led@0 { reg = <0>; led-sources = <0 2>; label = "white:backlight_cluster"; linux,default-trigger = "backlight"; }; }; }; For more product information please see the link below: https://www.ti.com/lit/ds/symlink/lm36274.pdf |