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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/cirrus,cs35l41.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Cirrus Logic CS35L41 Speaker Amplifier
maintainers:
- david.rhodes@cirrus.com
description: |
CS35L41 is a boosted mono Class D amplifier with DSP
speaker protection and equalization
properties:
compatible:
enum:
- cirrus,cs35l40
- cirrus,cs35l41
reg:
maxItems: 1
'#sound-dai-cells':
description:
The first cell indicating the audio interface.
const: 1
reset-gpios:
maxItems: 1
VA-supply:
description: voltage regulator phandle for the VA supply
VP-supply:
description: voltage regulator phandle for the VP supply
cirrus,boost-peak-milliamp:
description:
Boost-converter peak current limit in mA.
Configures the peak current by monitoring the current through the boost FET.
Range starts at 1600 mA and goes to a maximum of 4500 mA with increments
of 50 mA. See section 4.3.6 of the datasheet for details.
$ref: "/schemas/types.yaml#/definitions/uint32"
minimum: 1600
maximum: 4500
default: 4500
cirrus,boost-ind-nanohenry:
description:
Boost inductor value, expressed in nH. Valid
values include 1000, 1200, 1500 and 2200.
$ref: "/schemas/types.yaml#/definitions/uint32"
minimum: 1000
maximum: 2200
cirrus,boost-cap-microfarad:
description:
Total equivalent boost capacitance on the VBST
and VAMP pins, derated at 11 volts DC. The value must be rounded to the
nearest integer and expressed in uF.
$ref: "/schemas/types.yaml#/definitions/uint32"
cirrus,asp-sdout-hiz:
description:
Audio serial port SDOUT Hi-Z control. Sets the Hi-Z
configuration for SDOUT pin of amplifier.
0 = Logic 0 during unused slots, and while all transmit channels disabled
1 = Hi-Z during unused slots but logic 0 while all transmit channels disabled
2 = (Default) Logic 0 during unused slots, but Hi-Z while all transmit channels disabled
3 = Hi-Z during unused slots and while all transmit channels disabled
$ref: "/schemas/types.yaml#/definitions/uint32"
minimum: 0
maximum: 3
default: 2
cirrus,boost-type:
description:
Configures the type of Boost being used.
Internal boost requires boost-peak-milliamp, boost-ind-nanohenry and
boost-cap-microfarad.
External Boost must have GPIO1 as GPIO output. GPIO1 will be set high to
enable boost voltage.
0 = Internal Boost
1 = External Boost
$ref: "/schemas/types.yaml#/definitions/uint32"
minimum: 0
maximum: 1
cirrus,gpio1-polarity-invert:
description:
Boolean which specifies whether the GPIO1
level is inverted. If this property is not present the level is not inverted.
type: boolean
cirrus,gpio1-output-enable:
description:
Boolean which specifies whether the GPIO1 pin
is configured as an output. If this property is not present the
pin will be configured as an input.
type: boolean
cirrus,gpio1-src-select:
description:
Configures the function of the GPIO1 pin.
Note that the options are different from the GPIO2 pin
0 = High Impedance (Default)
1 = GPIO
2 = Sync
3 = MCLK input
$ref: "/schemas/types.yaml#/definitions/uint32"
minimum: 0
maximum: 3
cirrus,gpio2-polarity-invert:
description:
Boolean which specifies whether the GPIO2
level is inverted. If this property is not present the level is not inverted.
type: boolean
cirrus,gpio2-output-enable:
description:
Boolean which specifies whether the GPIO2 pin
is configured as an output. If this property is not present the
pin will be configured as an input.
type: boolean
cirrus,gpio2-src-select:
description:
Configures the function of the GPIO2 pin.
Note that the options are different from the GPIO1 pin.
0 = High Impedance (Default)
1 = GPIO
2 = Open Drain INTB
3 = MCLK input
4 = Push-pull INTB (active low)
5 = Push-pull INT (active high)
$ref: "/schemas/types.yaml#/definitions/uint32"
minimum: 0
maximum: 5
required:
- compatible
- reg
- "#sound-dai-cells"
allOf:
- if:
properties:
cirrus,boost-type:
const: 0
then:
required:
- cirrus,boost-peak-milliamp
- cirrus,boost-ind-nanohenry
- cirrus,boost-cap-microfarad
else:
if:
properties:
cirrus,boost-type:
const: 1
then:
required:
- cirrus,gpio1-output-enable
- cirrus,gpio1-src-select
properties:
cirrus,boost-peak-milliamp: false
cirrus,boost-ind-nanohenry: false
cirrus,boost-cap-microfarad: false
cirrus,gpio1-src-select:
enum: [1]
additionalProperties: false
examples:
- |
spi {
#address-cells = <1>;
#size-cells = <0>;
cs35l41: cs35l41@2 {
#sound-dai-cells = <1>;
compatible = "cirrus,cs35l41";
reg = <2>;
VA-supply = <&dummy_vreg>;
VP-supply = <&dummy_vreg>;
reset-gpios = <&gpio 110 0>;
cirrus,boost-type = <0>;
cirrus,boost-peak-milliamp = <4500>;
cirrus,boost-ind-nanohenry = <1000>;
cirrus,boost-cap-microfarad = <15>;
};
};
|
