210 lines
7.1 KiB
YAML
210 lines
7.1 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
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# Copyright (C) 2019 Texas Instruments Incorporated
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/tlv320adcx140.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Texas Instruments TLV320ADCX140 Quad Channel Analog-to-Digital Converter
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maintainers:
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- Andrew Davis <afd@ti.com>
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description: |
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The TLV320ADCX140 are multichannel (4-ch analog recording or 8-ch digital
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PDM microphones recording), high-performance audio, analog-to-digital
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converter (ADC) with analog inputs supporting up to 2V RMS. The TLV320ADCX140
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family supports line and microphone Inputs, and offers a programmable
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microphone bias or supply voltage generation.
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Specifications can be found at:
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https://www.ti.com/lit/ds/symlink/tlv320adc3140.pdf
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https://www.ti.com/lit/ds/symlink/tlv320adc5140.pdf
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https://www.ti.com/lit/ds/symlink/tlv320adc6140.pdf
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properties:
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compatible:
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enum:
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- ti,tlv320adc3140
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- ti,tlv320adc5140
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- ti,tlv320adc6140
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reg:
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maxItems: 1
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description: |
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I2C address of the device can be one of these 0x4c, 0x4d, 0x4e or 0x4f
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reset-gpios:
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maxItems: 1
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description: |
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GPIO used for hardware reset.
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areg-supply:
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description: |
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Regulator with AVDD at 3.3V. If not defined then the internal regulator
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is enabled.
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ti,mic-bias-source:
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description: |
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Indicates the source for MIC Bias.
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0 - Mic bias is set to VREF
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1 - Mic bias is set to VREF × 1.096
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6 - Mic bias is set to AVDD
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 1, 6]
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ti,vref-source:
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description: |
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Indicates the source for MIC Bias.
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0 - Set VREF to 2.75V
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1 - Set VREF to 2.5V
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2 - Set VREF to 1.375V
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 1, 2]
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ti,pdm-edge-select:
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description: |
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Defines the PDMCLK sampling edge configuration for the PDM inputs. This
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array is defined as <PDMIN1 PDMIN2 PDMIN3 PDMIN4>.
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0 - (default) Odd channel is latched on the negative edge and even
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channel is latched on the positive edge.
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1 - Odd channel is latched on the positive edge and even channel is
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latched on the negative edge.
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PDMIN1 - PDMCLK latching edge used for channel 1 and 2 data
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PDMIN2 - PDMCLK latching edge used for channel 3 and 4 data
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PDMIN3 - PDMCLK latching edge used for channel 5 and 6 data
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PDMIN4 - PDMCLK latching edge used for channel 7 and 8 data
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 1
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maxItems: 4
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items:
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maximum: 1
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default: [0, 0, 0, 0]
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ti,gpi-config:
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description: |
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Defines the configuration for the general purpose input pins (GPI).
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The array is defined as <GPI1 GPI2 GPI3 GPI4>.
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0 - (default) disabled
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1 - GPIX is configured as a general-purpose input (GPI)
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2 - GPIX is configured as a master clock input (MCLK)
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3 - GPIX is configured as an ASI input for daisy-chain (SDIN)
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4 - GPIX is configured as a PDM data input for channel 1 and channel
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(PDMDIN1)
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5 - GPIX is configured as a PDM data input for channel 3 and channel
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(PDMDIN2)
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6 - GPIX is configured as a PDM data input for channel 5 and channel
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(PDMDIN3)
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7 - GPIX is configured as a PDM data input for channel 7 and channel
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(PDMDIN4)
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 1
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maxItems: 4
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items:
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maximum: 7
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default: [0, 0, 0, 0]
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ti,gpio-config:
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description: |
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Defines the configuration and output drive for the General Purpose
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Input and Output pin (GPIO1). Its value is a pair, the first value is for
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the configuration type and the second value is for the output drive
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type. The array is defined as <GPIO1_CFG GPIO1_DRV>
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configuration for the GPIO pin can be one of the following:
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0 - disabled
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1 - GPIO1 is configured as a general-purpose output (GPO)
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2 - (default) GPIO1 is configured as a device interrupt output (IRQ)
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3 - GPIO1 is configured as a secondary ASI output (SDOUT2)
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4 - GPIO1 is configured as a PDM clock output (PDMCLK)
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8 - GPIO1 is configured as an input to control when MICBIAS turns on or
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off (MICBIAS_EN)
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9 - GPIO1 is configured as a general-purpose input (GPI)
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10 - GPIO1 is configured as a master clock input (MCLK)
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11 - GPIO1 is configured as an ASI input for daisy-chain (SDIN)
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12 - GPIO1 is configured as a PDM data input for channel 1 and channel 2
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(PDMDIN1)
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13 - GPIO1 is configured as a PDM data input for channel 3 and channel 4
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(PDMDIN2)
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14 - GPIO1 is configured as a PDM data input for channel 5 and channel 6
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(PDMDIN3)
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15 - GPIO1 is configured as a PDM data input for channel 7 and channel 8
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(PDMDIN4)
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output drive type for the GPIO pin can be one of the following:
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0 - Hi-Z output
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1 - Drive active low and active high
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2 - (default) Drive active low and weak high
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3 - Drive active low and Hi-Z
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4 - Drive weak low and active high
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5 - Drive Hi-Z and active high
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 2
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maxItems: 2
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items:
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maximum: 15
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default: [2, 2]
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ti,asi-tx-drive:
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type: boolean
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description: |
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When set the device will set the Tx ASI output to a Hi-Z state for unused
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data cycles. Default is to drive the output low on unused ASI cycles.
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patternProperties:
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'^ti,gpo-config-[1-4]$':
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$ref: /schemas/types.yaml#/definitions/uint32-array
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description: |
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Defines the configuration and output driver for the general purpose
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output pins (GPO). These values are pairs, the first value is for the
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configuration type and the second value is for the output drive type.
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The array is defined as <GPO_CFG GPO_DRV>
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GPO output configuration can be one of the following:
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0 - (default) disabled
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1 - GPOX is configured as a general-purpose output (GPO)
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2 - GPOX is configured as a device interrupt output (IRQ)
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3 - GPOX is configured as a secondary ASI output (SDOUT2)
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4 - GPOX is configured as a PDM clock output (PDMCLK)
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GPO output drive configuration for the GPO pins can be one of the following:
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0d - (default) Hi-Z output
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1d - Drive active low and active high
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2d - Drive active low and weak high
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3d - Drive active low and Hi-Z
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4d - Drive weak low and active high
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5d - Drive Hi-Z and active high
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required:
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- compatible
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- reg
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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codec: codec@4c {
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compatible = "ti,tlv320adc5140";
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reg = <0x4c>;
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ti,mic-bias-source = <6>;
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ti,pdm-edge-select = <0 1 0 1>;
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ti,gpi-config = <4 5 6 7>;
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ti,gpio-config = <10 2>;
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ti,gpo-config-1 = <0 0>;
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ti,gpo-config-2 = <0 0>;
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reset-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
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};
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};
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