mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
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f8673e4069
Add new property: cirrus,subsystem-id This new property is used to uniquely identify the system if device tree is used, to allow the driver to select the correct firmware and tuning for the system. The DSP driver searches for a compatible firmware (and tuning) based on what it is able to read from the hardware. However, the SSID is based on the system, and cannot be read from the hardware, therefore it needs to be read from the Device Tree. On ACPI-based systems, it is able to read this from the ACPI _SUB property, and to maintain compatibility with the driver between ACPI and Device Tree systems we need an equivalent property. Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com> Link: https://patch.msgid.link/20250917153722.94978-2-sbinding@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
216 lines
6.2 KiB
YAML
216 lines
6.2 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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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 5
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cirrus,subsystem-id:
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$ref: /schemas/types.yaml#/definitions/string
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description:
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Subsystem ID. If this property is present, it sets the system name,
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used to identify the firmware and tuning to load.
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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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