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| -rw-r--r-- | Documentation/devicetree/bindings/mfd/cirrus,lochnagar.yaml | 360 |
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diff --git a/Documentation/devicetree/bindings/mfd/cirrus,lochnagar.yaml b/Documentation/devicetree/bindings/mfd/cirrus,lochnagar.yaml new file mode 100644 index 000000000..c00ad3e21 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/cirrus,lochnagar.yaml @@ -0,0 +1,360 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/cirrus,lochnagar.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Cirrus Logic Lochnagar Audio Development Board + +maintainers: + - patches@opensource.cirrus.com + +description: | + Lochnagar is an evaluation and development board for Cirrus Logic + Smart CODEC and Amp devices. It allows the connection of most Cirrus + Logic devices on mini-cards, as well as allowing connection of + various application processor systems to provide a full evaluation + platform. Audio system topology, clocking and power can all be + controlled through the Lochnagar, allowing the device under test + to be used in a variety of possible use cases. + + Also see these documents for generic binding information: + [1] GPIO : ../gpio/gpio.txt + + And these for relevant defines: + [2] include/dt-bindings/pinctrl/lochnagar.h + [3] include/dt-bindings/clock/lochnagar.h + + And these documents for the required sub-node binding details: + [4] Clock: ../clock/cirrus,lochnagar.yaml + [5] Pinctrl: ../pinctrl/cirrus,lochnagar.yaml + [6] Sound: ../sound/cirrus,lochnagar.yaml + [7] Hardware Monitor: ../hwmon/cirrus,lochnagar.yaml + +allOf: + - if: + properties: + compatible: + enum: + - cirrus,lochnagar2 + then: + properties: + lochnagar-hwmon: + type: object + $ref: /schemas/hwmon/cirrus,lochnagar.yaml# + + lochnagar-sc: + type: object + $ref: /schemas/sound/cirrus,lochnagar.yaml# + +properties: + compatible: + enum: + - cirrus,lochnagar1 + - cirrus,lochnagar2 + + reg: + const: 0x22 + + reset-gpios: + maxItems: 1 + + present-gpios: + description: | + Host present line, indicating the presence of a + host system, see [1]. This can be omitted if the present line is + tied in hardware. + maxItems: 1 + + lochnagar-clk: + type: object + $ref: /schemas/clock/cirrus,lochnagar.yaml# + + lochnagar-pmic32k: + type: object + $ref: /schemas/clock/fixed-clock.yaml# + properties: + clock-frequency: + const: 32768 + + lochnagar-clk12m: + type: object + $ref: /schemas/clock/fixed-clock.yaml# + properties: + clock-frequency: + const: 12288000 + + lochnagar-clk11m: + type: object + $ref: /schemas/clock/fixed-clock.yaml# + properties: + clock-frequency: + const: 11298600 + + lochnagar-clk24m: + type: object + $ref: /schemas/clock/fixed-clock.yaml# + properties: + clock-frequency: + const: 24576000 + + lochnagar-clk22m: + type: object + $ref: /schemas/clock/fixed-clock.yaml# + properties: + clock-frequency: + const: 22579200 + + lochnagar-clk8m: + type: object + $ref: /schemas/clock/fixed-clock.yaml# + properties: + clock-frequency: + const: 8192000 + + lochnagar-usb24m: + type: object + $ref: /schemas/clock/fixed-clock.yaml# + properties: + clock-frequency: + const: 24576000 + + lochnagar-usb12m: + type: object + $ref: /schemas/clock/fixed-clock.yaml# + properties: + clock-frequency: + const: 12288000 + + lochnagar-pinctrl: + type: object + $ref: /schemas/pinctrl/cirrus,lochnagar.yaml# + + lochnagar-hwmon: + type: object + $ref: /schemas/hwmon/cirrus,lochnagar.yaml# + + lochnagar-sc: + type: object + $ref: /schemas/sound/cirrus,lochnagar.yaml# + + VDDCORE: + description: + Initialisation data for the VDDCORE regulator, which supplies the + CODECs digital core if not being provided by an internal regulator. + type: object + $ref: /schemas/regulator/regulator.yaml# + properties: + compatible: + enum: + - cirrus,lochnagar2-vddcore + + SYSVDD-supply: + description: + Primary power supply for the Lochnagar. + required: + - compatible + + MICVDD: + description: + Initialisation data for the MICVDD regulator, which supplies the + CODECs MICVDD. + type: object + $ref: /schemas/regulator/regulator.yaml# + properties: + compatible: + enum: + - cirrus,lochnagar2-micvdd + + SYSVDD-supply: + description: + Primary power supply for the Lochnagar. + required: + - compatible + + MIC1VDD: + description: + Initialisation data for the MIC1VDD supplies. + type: object + $ref: /schemas/regulator/regulator.yaml# + properties: + compatible: + enum: + - cirrus,lochnagar2-mic1vdd + + cirrus,micbias-input: + description: + A property selecting which of the CODEC minicard micbias outputs + should be used. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 1 + maximum: 4 + + MICBIAS1-supply: + description: + Regulator supplies for the MIC1VDD outputs, supplying the digital + microphones, normally supplied from the attached CODEC. + required: + - compatible + + MIC2VDD: + description: + Initialisation data for the MIC2VDD supplies. + type: object + $ref: /schemas/regulator/regulator.yaml# + properties: + compatible: + enum: + - cirrus,lochnagar2-mic2vdd + + cirrus,micbias-input: + description: + A property selecting which of the CODEC minicard micbias outputs + should be used. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 1 + maximum: 4 + + MICBIAS2-supply: + description: + Regulator supplies for the MIC2VDD outputs, supplying the digital + microphones, normally supplied from the attached CODEC. + required: + - compatible + + VDD1V8: + description: + Recommended fixed regulator for the VDD1V8 regulator, which supplies + the CODECs analog and 1.8V digital supplies. + type: object + $ref: /schemas/regulator/regulator.yaml# + properties: + compatible: + enum: + - regulator-fixed + + regulator-min-microvolt: + const: 1800000 + + regulator-max-microvolt: + const: 1800000 + + vin-supply: + description: + Should be set to same supply as SYSVDD + required: + - compatible + - regulator-min-microvolt + - regulator-max-microvolt + - regulator-boot-on + - regulator-always-on + - vin-supply + +required: + - compatible + - reg + - reset-gpios + - lochnagar-clk + - lochnagar-pinctrl + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clk/lochnagar.h> + #include <dt-bindings/pinctrl/lochnagar.h> + i2c@e0004000 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0xe0004000 0x1000>; + + lochnagar: lochnagar@22 { + compatible = "cirrus,lochnagar2"; + reg = <0x22>; + + reset-gpios = <&gpio0 55 0>; + present-gpios = <&gpio0 60 0>; + + lochnagarclk: lochnagar-clk { + compatible = "cirrus,lochnagar2-clk"; + + #clock-cells = <1>; + clocks = <&clkaudio>, <&clkpmic>; + clock-names = "ln-gf-mclk2", "ln-pmic-32k"; + + assigned-clocks = <&lochnagarclk LOCHNAGAR_CDC_MCLK1>, + <&lochnagarclk LOCHNAGAR_CDC_MCLK2>; + assigned-clock-parents = <&clkaudio>, <&clkpmic>; + }; + + clkpmic: lochnagar-pmic32k { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <32768>; + }; + + lochnagar-pinctrl { + compatible = "cirrus,lochnagar-pinctrl"; + + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&lochnagar 0 0 LOCHNAGAR2_PIN_NUM_GPIOS>; + + pinctrl-names = "default"; + pinctrl-0 = <&pinsettings>; + + pinsettings: pin-settings { + ap2aif-pins { + input-enable; + groups = "gf-aif1"; + function = "codec-aif3"; + }; + codec2aif-pins { + output-enable; + groups = "codec-aif3"; + function = "gf-aif1"; + }; + }; + }; + + lochnagar-sc { + compatible = "cirrus,lochnagar2-soundcard"; + + #sound-dai-cells = <1>; + + clocks = <&lochnagarclk LOCHNAGAR_SOUNDCARD_MCLK>; + clock-names = "mclk"; + }; + + lochnagar-hwmon { + compatible = "cirrus,lochnagar2-hwmon"; + }; + + MIC1VDD { + compatible = "cirrus,lochnagar2-mic1vdd"; + + cirrus,micbias-input = <3>; + }; + + MICVDD { + compatible = "cirrus,lochnagar2-micvdd"; + + SYSVDD-supply = <&wallvdd>; + + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + }; + + VDD1V8 { + compatible = "regulator-fixed"; + + regulator-name = "VDD1V8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-boot-on; + regulator-always-on; + + vin-supply = <&wallvdd>; + }; + }; + }; |