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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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ac03495d73
The CS48L32 is an Audio DSP with microphone inputs and SPI control interface. It has a programmable DSP and a variety of power-efficient fixed-function audio processors, with configurable digital mixing and routing. Most properties are core properties: supply regulators, gpios, clocks, interrupt parent and SPI interface. The custom properties define the configuration of the microphone inputs to match what is physically attached to them. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: "Rob Herring (Arm)" <robh@kernel.org> Link: https://patch.msgid.link/20250415115016.505777-2-rf@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
196 lines
4.7 KiB
YAML
196 lines
4.7 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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$id: http://devicetree.org/schemas/sound/cirrus,cs48l32.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Cirrus Logic CS48L32 audio DSP.
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maintainers:
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- patches@opensource.cirrus.com
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description: |
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The CS48L32 is a high-performance low-power audio DSP for smartphones and
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other portable audio devices. The CS48L32 combines a programmable Halo Core
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DSP with a variety of power-efficient fixed-function audio processors.
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See also the binding headers:
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include/dt-bindings/sound/cs48l32.yaml
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allOf:
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- $ref: /schemas/spi/spi-peripheral-props.yaml#
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- $ref: dai-common.yaml#
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properties:
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compatible:
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enum:
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- cirrus,cs48l32
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reg:
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description: SPI chip-select number.
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maxItems: 1
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spi-max-frequency:
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maximum: 25000000
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vdd-a-supply:
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description: Regulator supplying VDD_A
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vdd-d-supply:
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description: Regulator supplying VDD_D
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vdd-io-supply:
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description: Regulator supplying VDD_IO
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vdd-cp-supply:
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description: Regulator supplying VDD_CP
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reset-gpios:
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description:
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One entry specifying the GPIO controlling /RESET. Although optional,
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it is strongly recommended to use a hardware reset.
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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items:
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- description: The clock supplied on MCLK1
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clock-names:
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const: mclk1
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'#sound-dai-cells':
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const: 1
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cirrus,in-type:
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description: |
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A list of input type settings for each ADC input.
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Inputs are one of these types:
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CS48L32_IN_TYPE_DIFF : analog differential (default)
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CS48L32_IN_TYPE_SE : analog single-ended
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The type of the left (L) and right (R) channel on each input is
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independently configured, as are the two groups of pins muxable to
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the input (referred to in the datasheet as "1" and "2").
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$ref: /schemas/types.yaml#/definitions/uint32-array
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items:
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- description:
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IN1L_1 analog input type. One of the CS48L32_IN_TYPE_xxx.
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minimum: 0
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maximum: 1
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default: 0
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- description:
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IN1R_1 analog input type. One of the CS48L32_IN_TYPE_xxx.
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minimum: 0
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maximum: 1
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default: 0
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- description:
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IN1L_2 analog input type. One of the CS48L32_IN_TYPE_xxx.
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minimum: 0
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maximum: 1
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default: 0
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- description:
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IN1R_2 analog input type. One of the CS48L32_IN_TYPE_xxx.
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minimum: 0
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maximum: 1
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default: 0
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cirrus,pdm-sup:
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description: |
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Indicate which MICBIAS output supplies bias to the microphone.
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There is one cell per input (IN1, IN2, ...).
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One of the CS48L32_MICBIAS_xxx values.
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CS48L32_PDM_SUP_VOUT_MIC : mic biased from VOUT_MIC
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CS48L32_PDM_SUP_MICBIAS1 : mic biased from MICBIAS1
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Also see the INn_PDM_SUP field in the datasheet.
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$ref: /schemas/types.yaml#/definitions/uint32-array
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items:
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- description: IN1 PDM supply source
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minimum: 0
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maximum: 1
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default: 0
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- description: IN2 PDM supply source
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minimum: 0
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maximum: 1
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default: 0
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required:
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- compatible
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- reg
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- vdd-a-supply
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- vdd-d-supply
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- vdd-io-supply
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- vdd-cp-supply
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/sound/cs48l32.h>
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spi@e0006000 {
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0xe0006000 0x1000>;
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codec@1 {
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compatible = "cirrus,cs48l32";
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reg = <0x1>;
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spi-max-frequency = <2500000>;
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vdd-a-supply = <®ulator_1v8>;
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vdd-d-supply = <®ulator_1v2>;
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vdd-io-supply = <®ulator_1v8>;
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vdd-cp-supply = <®ulator_1v8>;
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reset-gpios = <&gpio 0 0>;
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clocks = <&clks 0>;
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clock-names = "mclk1";
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interrupt-parent = <&gpio0>;
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interrupts = <56 8>;
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#sound-dai-cells = <1>;
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cirrus,in-type = <
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CS48L32_IN_TYPE_DIFF CS48L32_IN_TYPE_DIFF
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CS48L32_IN_TYPE_SE CS48L32_IN_TYPE_SE
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>;
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cirrus,pdm-sup = <
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CS48L32_PDM_SUP_MICBIAS1 CS48L32_PDM_SUP_MICBIAS1
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>;
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};
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};
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#
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# Minimal config
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#
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- |
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#include <dt-bindings/sound/cs48l32.h>
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spi@e0006000 {
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0xe0006000 0x1000>;
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codec@1 {
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compatible = "cirrus,cs48l32";
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reg = <0x1>;
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vdd-a-supply = <®ulator_1v8>;
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vdd-d-supply = <®ulator_1v2>;
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vdd-io-supply = <®ulator_1v8>;
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vdd-cp-supply = <®ulator_1v8>;
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};
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};
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