1*4882a593SmuzhiyunAnalog Devices ADAU1977/ADAU1978/ADAU1979 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunDatasheets: 4*4882a593Smuzhiyunhttps://www.analog.com/media/en/technical-documentation/data-sheets/ADAU1977.pdf 5*4882a593Smuzhiyunhttps://www.analog.com/media/en/technical-documentation/data-sheets/ADAU1978.pdf 6*4882a593Smuzhiyunhttps://www.analog.com/media/en/technical-documentation/data-sheets/ADAU1979.pdf 7*4882a593Smuzhiyun 8*4882a593SmuzhiyunThis driver supports both the I2C and SPI bus. 9*4882a593Smuzhiyun 10*4882a593SmuzhiyunRequired properties: 11*4882a593Smuzhiyun - compatible: Should contain one of the following: 12*4882a593Smuzhiyun "adi,adau1977" 13*4882a593Smuzhiyun "adi,adau1978" 14*4882a593Smuzhiyun "adi,adau1979" 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun - AVDD-supply: analog power supply for the device, please consult 17*4882a593Smuzhiyun Documentation/devicetree/bindings/regulator/regulator.txt 18*4882a593Smuzhiyun 19*4882a593SmuzhiyunOptional properties: 20*4882a593Smuzhiyun - reset-gpios: the reset pin for the chip, for more details consult 21*4882a593Smuzhiyun Documentation/devicetree/bindings/gpio/gpio.txt 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun - DVDD-supply: supply voltage for the digital core, please consult 24*4882a593Smuzhiyun Documentation/devicetree/bindings/regulator/regulator.txt 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun- adi,micbias: configures the voltage setting for the MICBIAS pin. 27*4882a593Smuzhiyun Select 0/1/2/3/4/5/6/7/8 to specify MICBIAS voltage 28*4882a593Smuzhiyun 5V/5.5V/6V/6.5V/7V/7.5V/8V/8.5V/9V 29*4882a593Smuzhiyun If not specified the default value will be "7" meaning 8.5 Volts. 30*4882a593Smuzhiyun This property is only valid for the ADAU1977 31*4882a593Smuzhiyun 32*4882a593SmuzhiyunFor required properties on SPI, please consult 33*4882a593SmuzhiyunDocumentation/devicetree/bindings/spi/spi-bus.txt 34*4882a593Smuzhiyun 35*4882a593SmuzhiyunRequired properties on I2C: 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun - reg: The i2c address. Value depends on the state of ADDR0 38*4882a593Smuzhiyun and ADDR1, as wired in hardware. 39*4882a593Smuzhiyun 40*4882a593SmuzhiyunExamples: 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun adau1977_spi: adau1977@0 { 43*4882a593Smuzhiyun compatible = "adi,adau1977"; 44*4882a593Smuzhiyun spi-max-frequency = <600000>; 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun AVDD-supply = <®ulator>; 47*4882a593Smuzhiyun DVDD-supply = <®ulator_digital>; 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun adi,micbias = <3>; 50*4882a593Smuzhiyun reset-gpios = <&gpio 10 GPIO_ACTIVE_LOW>; 51*4882a593Smuzhiyun }; 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun adau1977_i2c: adau1977@11 { 54*4882a593Smuzhiyun compatible = "adi,adau1977"; 55*4882a593Smuzhiyun reg = <0x11>; 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun AVDD-supply = <®ulator>; 58*4882a593Smuzhiyun DVDD-supply = <®ulator_digital>; 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun reset-gpios = <&gpio 10 GPIO_ACTIVE_LOW>; 61*4882a593Smuzhiyun }; 62