1Texas Instruments TAS5086 6-channel PWM Processor 2 3Required properties: 4 5 - compatible: Should contain "ti,tas5086". 6 - reg: The i2c address. Should contain <0x1b>. 7 8Optional properties: 9 10 - reset-gpio: A GPIO spec to define which pin is connected to the 11 chip's !RESET pin. If specified, the driver will 12 assert a hardware reset at probe time. 13 14 - ti,charge-period: This property should contain the time in microseconds 15 that closely matches the external single-ended 16 split-capacitor charge period. The hardware chip 17 waits for this period of time before starting the 18 PWM signals. This helps reduce pops and clicks. 19 20 When not specified, the hardware default of 1300ms 21 is retained. 22 23 - ti,mid-z-channel-X: Boolean properties, X being a number from 1 to 6. 24 If given, channel X will start with the Mid-Z start 25 sequence, otherwise the default Low-Z scheme is used. 26 27 The correct configuration depends on how the power 28 stages connected to the PWM output pins work. Not all 29 power stages are compatible to Mid-Z - please refer 30 to the datasheets for more details. 31 32 Most systems should not set any of these properties. 33 34 - avdd-supply: Power supply for AVDD, providing 3.3V 35 - dvdd-supply: Power supply for DVDD, providing 3.3V 36 37Examples: 38 39 i2c_bus { 40 tas5086@1b { 41 compatible = "ti,tas5086"; 42 reg = <0x1b>; 43 reset-gpio = <&gpio 23 0>; 44 ti,charge-period = <156000>; 45 avdd-supply = <&vdd_3v3_reg>; 46 dvdd-supply = <&vdd_3v3_reg>; 47 }; 48 }; 49