cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

leds-lm36274.txt (2228B)


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