1 Maxim MAX98504 class D mono speaker amplifier
3 This device supports I2C control interface and an IRQ output signal. It features
4 a PCM and PDM digital audio interface (DAI) and a differential analog input.
8 - compatible : "maxim,max98504"
9 - reg : should contain the I2C slave device address
10 - DVDD-supply, DIOVDD-supply, PVDD-supply: power supplies for the device,
11 as covered in ../regulator/regulator.txt
12 - interrupts : should specify the interrupt line the device is connected to,
13 as described in ../interrupt-controller/interrupts.txt
17 - maxim,brownout-threshold - the PVDD brownout threshold, the value must be
18 from 0, 1...21 range, corresponding to 2.6V, 2.65V...3.65V voltage range
19 - maxim,brownout-attenuation - the brownout attenuation to the speaker gain
20 applied during the "attack hold" and "timed hold" phase, the value must be
22 - maxim,brownout-attack-hold-ms - the brownout attack hold phase time in ms,
23 0...255 (VBATBROWN_ATTK_HOLD, register 0x0018)
24 - maxim,brownout-timed-hold-ms - the brownout timed hold phase time in ms,
25 0...255 (VBATBROWN_TIME_HOLD, register 0x0019)
26 - maxim,brownout-release-rate-ms - the brownout release phase step time in ms,
27 0...255 (VBATBROWN_RELEASE, register 0x001A)
29 The default value when the above properties are not specified is 0,
30 the maxim,brownout-threshold property must be specified to actually enable
31 the PVDD brownout protection.
36 compatible = "maxim,max98504";
38 interrupt-parent = <&gpio_bank_0>;
41 DVDD-supply = <®ulator>;
42 DIOVDD-supply = <®ulator>;
43 PVDD-supply = <®ulator>;