| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | Texas Instruments TAS5086 6-channel PWM Processor |
| 2 | |
| 3 | Required properties: |
| 4 | |
| 5 | - compatible: Should contain "ti,tas5086". |
| 6 | - reg: The i2c address. Should contain <0x1b>. |
| 7 | |
| 8 | Optional 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 | |
| 37 | Examples: |
| 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 | }; |