| # SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause) |
| # Copyright (C) 2019 Texas Instruments Incorporated |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/sound/tlv320adcx140.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Texas Instruments TLV320ADCX140 Quad Channel Analog-to-Digital Converter |
| |
| maintainers: |
| - Dan Murphy <dmurphy@ti.com> |
| |
| description: | |
| The TLV320ADCX140 are multichannel (4-ch analog recording or 8-ch digital |
| PDM microphones recording), high-performance audio, analog-to-digital |
| converter (ADC) with analog inputs supporting up to 2V RMS. The TLV320ADCX140 |
| family supports line and microphone Inputs, and offers a programmable |
| microphone bias or supply voltage generation. |
| |
| Specifications can be found at: |
| http://www.ti.com/lit/ds/symlink/tlv320adc3140.pdf |
| http://www.ti.com/lit/ds/symlink/tlv320adc5140.pdf |
| http://www.ti.com/lit/ds/symlink/tlv320adc6140.pdf |
| |
| properties: |
| compatible: |
| oneOf: |
| - const: ti,tlv320adc3140 |
| - const: ti,tlv320adc5140 |
| - const: ti,tlv320adc6140 |
| |
| reg: |
| maxItems: 1 |
| description: | |
| I2C addresss of the device can be one of these 0x4c, 0x4d, 0x4e or 0x4f |
| |
| reset-gpios: |
| description: | |
| GPIO used for hardware reset. |
| |
| areg-supply: |
| description: | |
| Regulator with AVDD at 3.3V. If not defined then the internal regulator |
| is enabled. |
| |
| ti,mic-bias-source: |
| description: | |
| Indicates the source for MIC Bias. |
| 0 - Mic bias is set to VREF |
| 1 - Mic bias is set to VREF × 1.096 |
| 6 - Mic bias is set to AVDD |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| enum: [0, 1, 6] |
| |
| ti,vref-source: |
| description: | |
| Indicates the source for MIC Bias. |
| 0 - Set VREF to 2.75V |
| 1 - Set VREF to 2.5V |
| 2 - Set VREF to 1.375V |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| enum: [0, 1, 2] |
| |
| ti,pdm-edge-select: |
| description: | |
| Defines the PDMCLK sampling edge configuration for the PDM inputs. This |
| array is defined as <PDMIN1 PDMIN2 PDMIN3 PDMIN4>. |
| |
| 0 - (default) Odd channel is latched on the negative edge and even |
| channel is latched on the the positive edge. |
| 1 - Odd channel is latched on the positive edge and even channel is |
| latched on the the negative edge. |
| |
| PDMIN1 - PDMCLK latching edge used for channel 1 and 2 data |
| PDMIN2 - PDMCLK latching edge used for channel 3 and 4 data |
| PDMIN3 - PDMCLK latching edge used for channel 5 and 6 data |
| PDMIN4 - PDMCLK latching edge used for channel 7 and 8 data |
| |
| allOf: |
| - $ref: /schemas/types.yaml#/definitions/uint32-array |
| - minItems: 1 |
| maxItems: 4 |
| items: |
| maximum: 1 |
| default: [0, 0, 0, 0] |
| |
| ti,gpi-config: |
| description: | |
| Defines the configuration for the general purpose input pins (GPI). |
| The array is defined as <GPI1 GPI2 GPI3 GPI4>. |
| |
| 0 - (default) disabled |
| 1 - GPIX is configured as a general-purpose input (GPI) |
| 2 - GPIX is configured as a master clock input (MCLK) |
| 3 - GPIX is configured as an ASI input for daisy-chain (SDIN) |
| 4 - GPIX is configured as a PDM data input for channel 1 and channel |
| (PDMDIN1) |
| 5 - GPIX is configured as a PDM data input for channel 3 and channel |
| (PDMDIN2) |
| 6 - GPIX is configured as a PDM data input for channel 5 and channel |
| (PDMDIN3) |
| 7 - GPIX is configured as a PDM data input for channel 7 and channel |
| (PDMDIN4) |
| |
| allOf: |
| - $ref: /schemas/types.yaml#/definitions/uint32-array |
| - minItems: 1 |
| maxItems: 4 |
| items: |
| maximum: 7 |
| default: [0, 0, 0, 0] |
| |
| required: |
| - compatible |
| - reg |
| |
| examples: |
| - | |
| #include <dt-bindings/gpio/gpio.h> |
| i2c0 { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| codec: codec@4c { |
| compatible = "ti,tlv320adc5140"; |
| reg = <0x4c>; |
| ti,mic-bias-source = <6>; |
| ti,pdm-edge-select = <0 1 0 1>; |
| ti,gpi-config = <4 5 6 7>; |
| reset-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>; |
| }; |
| }; |
