Merge branch 'asoc-4.20' into asoc-next

Analog Devices ADAU1977/ADAU1978/ADAU1979

Datasheets:

http://www.analog.com/media/en/technical-documentation/data-sheets/ADAU1977.pdf

http://www.analog.com/media/en/technical-documentation/data-sheets/ADAU1978.pdf

http://www.analog.com/media/en/technical-documentation/data-sheets/ADAU1979.pdf

This driver supports both the I2C and SPI bus.

Required properties:

 - compatible: Should contain one of the following:

               "adi,adau1977"

               "adi,adau1978"

               "adi,adau1979"

 - AVDD-supply: analog power supply for the device, please consult

                Documentation/devicetree/bindings/regulator/regulator.txt

Optional properties:

 - reset-gpio:  the reset pin for the chip, for more details consult

                Documentation/devicetree/bindings/gpio/gpio.txt

 - DVDD-supply: supply voltage for the digital core, please consult

                Documentation/devicetree/bindings/regulator/regulator.txt

For required properties on SPI, please consult

Documentation/devicetree/bindings/spi/spi-bus.txt

Required properties on I2C:

 - reg:         The i2c address. Value depends on the state of ADDR0

                and ADDR1, as wired in hardware.

Examples:

	adau1977_spi: adau1977@0 {

		compatible = "adi,adau1977";

		spi-max-frequency = <600000>;

		AVDD-supply = <&regulator>;

		DVDD-supply = <&regulator_digital>;

		reset_gpio = <&gpio 10 GPIO_ACTIVE_LOW>;

	};

	adau1977_i2c: adau1977@11 {

		compatible = "adi,adau1977";

		reg = <0x11>;

		AVDD-supply = <&regulator>;

		DVDD-supply = <&regulator_digital>;

		reset_gpio = <&gpio 10 GPIO_ACTIVE_LOW>;

	};

* Amlogic Audio PDM input

Required properties:

- compatible: 'amlogic,axg-pdm'

- reg: physical base address of the controller and length of memory

       mapped region.

- clocks: list of clock phandle, one for each entry clock-names.

- clock-names: should contain the following:

  * "pclk"   : peripheral clock.

  * "dclk"   : pdm digital clock

  * "sysclk" : dsp system clock

- #sound-dai-cells: must be 0.

Example of PDM on the A113 SoC:

pdm: audio-controller@ff632000 {

	compatible = "amlogic,axg-pdm";

	reg = <0x0 0xff632000 0x0 0x34>;

	#sound-dai-cells = <0>;

	clocks = <&clkc_audio AUD_CLKID_PDM>,

		 <&clkc_audio AUD_CLKID_PDM_DCLK>,

		 <&clkc_audio AUD_CLKID_PDM_SYSCLK>;

	clock-names = "pclk", "dclk", "sysclk";

};

CS42L51 audio CODEC

Optional properties:

  - clocks : a list of phandles + clock-specifiers, one for each entry in

    clock-names

  - clock-names : must contain "MCLK"

Example:

cs42l51: cs42l51@4a {

	compatible = "cirrus,cs42l51";

	reg = <0x4a>;

	clocks = <&mclk_prov>;

	clock-names = "MCLK";

};

MAX98088 audio CODEC

This device supports I2C only.

Required properties:

- compatible: "maxim,max98088" or "maxim,max98089".

- reg: The I2C address of the device.

Optional properties:

- clocks: the clock provider of MCLK, see ../clock/clock-bindings.txt section

  "consumer" for more information.

- clock-names: must be set to "mclk"

Example:

max98089: codec@10 {

	compatible = "maxim,max98089";

	reg = <0x10>;

	clocks = <&clks IMX6QDL_CLK_CKO2>;

	clock-names = "mclk";

};

Mikroe-PROTO audio board

Required properties:

  - compatible: "mikroe,mikroe-proto"

  - dai-format: Must be "i2s".

  - i2s-controller: The phandle of the I2S controller.

  - audio-codec: The phandle of the WM8731 audio codec.

Optional properties:

  - model: The user-visible name of this sound complex.

  - bitclock-master: Indicates dai-link bit clock master; for details see simple-card.txt (1).

  - frame-master: Indicates dai-link frame master; for details see simple-card.txt (1).

(1) : There must be the same master for both bit and frame clocks.

Example:

	sound {

		compatible = "mikroe,mikroe-proto";

		model = "wm8731 @ sama5d2_xplained";

		i2s-controller = <&i2s0>;

		audio-codec = <&wm8731>;

		dai-format = "i2s";

        };

};