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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
interrupts:
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.
Shared boost allows two amplifiers to share a single boost circuit by
communicating on the MDSYNC bus. The active amplifier controls the boost
circuit using combined data from both amplifiers. GPIO1 should be
configured for Sync when shared boost is used. Shared boost is not
compatible with External boost. Active amplifier requires
boost-peak-milliamp, boost-ind-nanohenry and boost-cap-microfarad.
0 = Internal Boost
1 = External Boost
2 = Shared Boost Active
3 = Shared Boost Passive
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 3
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:
- $ref: dai-common.yaml#
- 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]
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
spi {
#address-cells = <1>;
#size-cells = <0>;
cs35l41: speaker-amp@2 {
#sound-dai-cells = <1>;
compatible = "cirrus,cs35l41";
reg = <2>;
VA-supply = <&dummy_vreg>;
VP-supply = <&dummy_vreg>;
reset-gpios = <&gpio 110 GPIO_ACTIVE_HIGH>;
cirrus,boost-type = <0>;
cirrus,boost-peak-milliamp = <4500>;
cirrus,boost-ind-nanohenry = <1000>;
cirrus,boost-cap-microfarad = <15>;
};
};
|
