210 lines
6.0 KiB
YAML
210 lines
6.0 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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$id: http://devicetree.org/schemas/sound/cirrus,cs35l41.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Cirrus Logic CS35L41 Speaker Amplifier
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maintainers:
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- david.rhodes@cirrus.com
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description: |
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CS35L41 is a boosted mono Class D amplifier with DSP
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speaker protection and equalization
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properties:
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compatible:
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enum:
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- cirrus,cs35l40
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- cirrus,cs35l41
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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'#sound-dai-cells':
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description:
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The first cell indicating the audio interface.
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const: 1
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reset-gpios:
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maxItems: 1
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VA-supply:
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description: voltage regulator phandle for the VA supply
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VP-supply:
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description: voltage regulator phandle for the VP supply
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cirrus,boost-peak-milliamp:
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description:
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Boost-converter peak current limit in mA.
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Configures the peak current by monitoring the current through the boost FET.
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Range starts at 1600 mA and goes to a maximum of 4500 mA with increments
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of 50 mA. See section 4.3.6 of the datasheet for details.
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 1600
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maximum: 4500
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default: 4500
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cirrus,boost-ind-nanohenry:
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description:
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Boost inductor value, expressed in nH. Valid
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values include 1000, 1200, 1500 and 2200.
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 1000
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maximum: 2200
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cirrus,boost-cap-microfarad:
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description:
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Total equivalent boost capacitance on the VBST
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and VAMP pins, derated at 11 volts DC. The value must be rounded to the
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nearest integer and expressed in uF.
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$ref: /schemas/types.yaml#/definitions/uint32
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cirrus,asp-sdout-hiz:
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description:
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Audio serial port SDOUT Hi-Z control. Sets the Hi-Z
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configuration for SDOUT pin of amplifier.
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0 = Logic 0 during unused slots, and while all transmit channels disabled
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1 = Hi-Z during unused slots but logic 0 while all transmit channels disabled
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2 = (Default) Logic 0 during unused slots, but Hi-Z while all transmit channels disabled
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3 = Hi-Z during unused slots and while all transmit channels disabled
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 3
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default: 2
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cirrus,boost-type:
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description:
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Configures the type of Boost being used.
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Internal boost requires boost-peak-milliamp, boost-ind-nanohenry and
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boost-cap-microfarad.
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External Boost must have GPIO1 as GPIO output. GPIO1 will be set high to
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enable boost voltage.
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Shared boost allows two amplifiers to share a single boost circuit by
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communicating on the MDSYNC bus. The active amplifier controls the boost
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circuit using combined data from both amplifiers. GPIO1 should be
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configured for Sync when shared boost is used. Shared boost is not
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compatible with External boost. Active amplifier requires
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boost-peak-milliamp, boost-ind-nanohenry and boost-cap-microfarad.
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0 = Internal Boost
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1 = External Boost
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2 = Shared Boost Active
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3 = Shared Boost Passive
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 3
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cirrus,gpio1-polarity-invert:
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description:
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Boolean which specifies whether the GPIO1
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level is inverted. If this property is not present the level is not inverted.
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type: boolean
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cirrus,gpio1-output-enable:
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description:
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Boolean which specifies whether the GPIO1 pin
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is configured as an output. If this property is not present the
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pin will be configured as an input.
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type: boolean
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cirrus,gpio1-src-select:
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description:
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Configures the function of the GPIO1 pin.
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Note that the options are different from the GPIO2 pin
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0 = High Impedance (Default)
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1 = GPIO
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2 = Sync
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3 = MCLK input
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 3
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cirrus,gpio2-polarity-invert:
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description:
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Boolean which specifies whether the GPIO2
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level is inverted. If this property is not present the level is not inverted.
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type: boolean
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cirrus,gpio2-output-enable:
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description:
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Boolean which specifies whether the GPIO2 pin
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is configured as an output. If this property is not present the
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pin will be configured as an input.
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type: boolean
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cirrus,gpio2-src-select:
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description:
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Configures the function of the GPIO2 pin.
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Note that the options are different from the GPIO1 pin.
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0 = High Impedance (Default)
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1 = GPIO
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2 = Open Drain INTB
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3 = MCLK input
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4 = Push-pull INTB (active low)
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5 = Push-pull INT (active high)
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 5
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required:
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- compatible
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- reg
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- "#sound-dai-cells"
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allOf:
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- $ref: dai-common.yaml#
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- if:
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properties:
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cirrus,boost-type:
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const: 0
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then:
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required:
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- cirrus,boost-peak-milliamp
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- cirrus,boost-ind-nanohenry
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- cirrus,boost-cap-microfarad
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else:
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if:
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properties:
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cirrus,boost-type:
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const: 1
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then:
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required:
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- cirrus,gpio1-output-enable
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- cirrus,gpio1-src-select
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properties:
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cirrus,boost-peak-milliamp: false
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cirrus,boost-ind-nanohenry: false
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cirrus,boost-cap-microfarad: false
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cirrus,gpio1-src-select:
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enum: [1]
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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cs35l41: speaker-amp@2 {
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#sound-dai-cells = <1>;
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compatible = "cirrus,cs35l41";
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reg = <2>;
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VA-supply = <&dummy_vreg>;
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VP-supply = <&dummy_vreg>;
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reset-gpios = <&gpio 110 GPIO_ACTIVE_HIGH>;
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cirrus,boost-type = <0>;
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cirrus,boost-peak-milliamp = <4500>;
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cirrus,boost-ind-nanohenry = <1000>;
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cirrus,boost-cap-microfarad = <15>;
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};
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};
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