# 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 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>; }; };