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1TI/National Semiconductor LP3943 PWM controller2 3Required properties:4 - compatible: "ti,lp3943-pwm"5 - #pwm-cells: Should be 2. See pwm.yaml in this directory for a6 description of the cells format.7 Note that this hardware limits the period length to the8 range 6250~1600000.9 - ti,pwm0 or ti,pwm1: Output pin number(s) for PWM channel 0 or 1.10 0 = output 011 1 = output 112 .13 .14 15 = output 1515 16Example:17PWM 0 is for RGB LED brightness control18PWM 1 is for brightness control of LP8557 backlight device19 20&i2c3 {21 lp3943@60 {22 compatible = "ti,lp3943";23 reg = <0x60>;24 25 /*26 * PWM 0 : output 8, 9 and 1027 * PWM 1 : output 1528 */29 pwm3943: pwm {30 compatible = "ti,lp3943-pwm";31 #pwm-cells = <2>;32 ti,pwm0 = <8 9 10>;33 ti,pwm1 = <15>;34 };35 };36 37};38 39/* LEDs control with PWM 0 of LP3943 */40pwmleds {41 compatible = "pwm-leds";42 rgb {43 label = "indi::rgb";44 pwms = <&pwm3943 0 10000>;45 max-brightness = <255>;46 };47};48 49&i2c4 {50 /* Backlight control with PWM 1 of LP3943 */51 backlight@2c {52 compatible = "ti,lp8557";53 reg = <0x2c>;54 55 pwms = <&pwm3943 1 10000>;56 pwm-names = "lp8557";57 };58};59