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