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Message-ID: <20200218172140.23740-2-dmurphy@ti.com>
Date: Tue, 18 Feb 2020 11:21:39 -0600
From: Dan Murphy <dmurphy@...com>
To: <lgirdwood@...il.com>, <broonie@...nel.org>, <perex@...ex.cz>,
<tiwai@...e.com>
CC: <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>,
Dan Murphy <dmurphy@...com>
Subject: [PATCH v2 1/2] dt-bindings: sound: Add TLV320ADCx140 dt bindings
Add dt bindings for the TLV320ADCx140 Burr-Brown ADC.
The initial support is for the following:
TLV320ADC3140 - http://www.ti.com/lit/gpn/tlv320adc3140
TLV320ADC5140 - http://www.ti.com/lit/gpn/tlv320adc5140
TLV320ADC6140 - http://www.ti.com/lit/gpn/tlv320adc6140
Signed-off-by: Dan Murphy <dmurphy@...com>
---
v2 - added areg-supply to determine to use internal or external regulator.
.../bindings/sound/tlv320adcx140.yaml | 83 +++++++++++++++++++
1 file changed, 83 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/tlv320adcx140.yaml
diff --git a/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml b/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml
new file mode 100644
index 000000000000..1433ff62b14f
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml
@@ -0,0 +1,83 @@
+# 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@...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
+ allOf:
+ - $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
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ - enum: [0, 1, 2]
+
+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,use-internal-areg;
+ ti,mic-bias-source = <6>;
+ reset-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
+ };
+ };
--
2.25.0
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