Device tree bindings for the ESS ES9218P codec, which uses an I2C control interface.
Signed-off-by: Aidan MacDonald aidanmacdonald.0x0@gmail.com --- .../bindings/sound/ess,es9218p.yaml | 104 ++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/ess,es9218p.yaml
diff --git a/Documentation/devicetree/bindings/sound/ess,es9218p.yaml b/Documentation/devicetree/bindings/sound/ess,es9218p.yaml new file mode 100644 index 000000000000..d205b6a8bbb2 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/ess,es9218p.yaml @@ -0,0 +1,104 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/ess,es9218p.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ESS ES9218P audio codec + +maintainers: + - Aidan MacDonald aidanmacdonald.0x0@gmail.com + +properties: + compatible: + const: ess,es9218p + + reg: + maxItems: 1 + + "#sound-dai-cells": + const: 0 + + avdd-supply: + description: + Definition of the regulator used for digital core power supply. + + vcca-supply: + description: + Definition of the regulator used for oscillator and DAC power supply. + + avcc3v3-supply: + description: + Definition of the 3.3V regulator for amplifier, switch, and charge pumps. + + avcc1v8-supply: + description: + Definition of the 1.8V regulator for amplifier, switch, and charge pumps. + + clocks: + items: + - description: clock for master clock (MCLK) + + clock-names: + items: + - const: mclk + + reset-gpios: + maxItems: 1 + description: + Pin used for codec hardware reset, corresponds to the RESETB pin. + + ess,max-clock-div: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Sets the maximum MCLK divider for generating the internal CLK. + CLK must be at least 20x the I2C bus speed or I2C transactions + will fail. The maximum divider should be chosen to ensure that + CLK will not fall below the limit. + enum: + - 1 + - 2 + - 4 + - 8 + default: 1 + + ess,oscillator-pad-bias: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Sets the oscillator pad drive bias. 0 - full bias, 15 - disabled. + minimum: 0 + maximum: 15 + default: 0 + +required: + - compatible + - reg + - "#sound-dai-cells" + - avdd-supply + - vcca-supply + - avcc3v3-supply + - avcc1v8-supply + - clocks + - clock-names + - reset-gpios + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + codec@48 { + compatible = "ess,es9218p"; + reg = <0x48>; + #sound-dai-cells = <0>; + avdd-supply = <&avdd>; + vcca-supply = <&vcca>; + avcc3v3-supply = <&avcc3v3>; + avcc1v8-supply = <&avcc1v8>; + clocks = <&xtal_clock>; + clock-names = "mclk"; + reset-gpios = <&gpio 1 GPIO_ACTIVE_LOW>; + }; + };