ASoc: dt-bindings: PCM6240: Add initial DT binding

PCM6240 family chips are popular among audio customers, in spite of only a
portion of the functionality of codec, such as ADC or DAC, and so on, for
different Specifications, range from Personal Electric to Automotive
Electric, even some professional fields. Yet their audio performance is far
superior to the codec's, and cost is lower than codec, and much easier to
program than codec.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shenghao Ding <shenghao-ding@ti.com>
Link: https://lore.kernel.org/r/20240407091846.1299-5-shenghao-ding@ti.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/ti,pcm6240.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2022 - 2024 Texas Instruments Incorporated
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/ti,pcm6240.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments PCM6240 Family Audio ADC/DAC
+
+maintainers:
+  - Shenghao Ding <shenghao-ding@ti.com>
+
+description: |
+  The PCM6240 Family is a big family of Audio ADC/DAC for
+  different Specifications, range from Personal Electric
+  to Automotive Electric, even some professional fields.
+
+  Specifications about the audio chip can be found at:
+    https://www.ti.com/lit/gpn/tlv320adc3120
+    https://www.ti.com/lit/gpn/tlv320adc5120
+    https://www.ti.com/lit/gpn/tlv320adc6120
+    https://www.ti.com/lit/gpn/dix4192
+    https://www.ti.com/lit/gpn/pcm1690
+    https://www.ti.com/lit/gpn/pcm3120-q1
+    https://www.ti.com/lit/gpn/pcm3140-q1
+    https://www.ti.com/lit/gpn/pcm5120-q1
+    https://www.ti.com/lit/gpn/pcm6120-q1
+    https://www.ti.com/lit/gpn/pcm6260-q1
+    https://www.ti.com/lit/gpn/pcm9211
+    https://www.ti.com/lit/gpn/pcmd3140
+    https://www.ti.com/lit/gpn/pcmd3180
+    https://www.ti.com/lit/gpn/taa5212
+    https://www.ti.com/lit/gpn/tad5212
+
+properties:
+  compatible:
+    description: |
+      ti,adc3120: Stereo-channel, 768-kHz, Burr-Brown™ audio analog-to-
+      digital converter (ADC) with 106-dB SNR.
+
+      ti,adc5120: 2-Channel, 768-kHz, Burr-Brown™ Audio ADC with 120-dB SNR.
+
+      ti,adc6120: Stereo-channel, 768-kHz, Burr-Brown™ audio analog-to-
+      digital converter (ADC) with 123-dB SNR.
+
+      ti,dix4192: 216-kHz digital audio converter with Quad-Channel In
+      and One-Channel Out.
+
+      ti,pcm1690: Automotive Catalog 113dB SNR 8-Channel Audio DAC with
+      Differential Outputs.
+
+      ti,pcm3120: Automotive, stereo, 106-dB SNR, 768-kHz, low-power
+      software-controlled audio ADC.
+
+      ti,pcm3140: Automotive, Quad-Channel, 768-kHz, Burr-Brown™ Audio ADC
+      with 106-dB SNR.
+
+      ti,pcm5120: Automotive, stereo, 120-dB SNR, 768-kHz, low-power
+      software-controlled audio ADC.
+
+      ti,pcm5140: Automotive, Quad-Channel, 768-kHz, Burr-Brown™ Audio ADC
+      with 120-dB SNR.
+
+      ti,pcm6120: Automotive, stereo, 123-dB SNR, 768-kHz, low-power
+      software-controlled audio ADC.
+
+      ti,pcm6140: Automotive, Quad-Channel, 768-kHz, Burr-Brown™ Audio ADC
+      with 123-dB SNR.
+
+      ti,pcm6240: Automotive 4-ch audio ADC with integrated programmable mic
+      bias, boost and input diagnostics.
+
+      ti,pcm6260: Automotive 6-ch audio ADC with integrated programmable mic
+      bias, boost and input diagnostics.
+
+      ti,pcm9211: 216-kHz digital audio converter With Stereo ADC and
+      Routing.
+
+      ti,pcmd3140: Four-channel PDM-input to TDM or I2S output converter.
+
+      ti,pcmd3180: Eight-channel pulse-density-modulation input to TDM or
+      I2S output converter.
+
+      ti,taa5212: Low-power high-performance stereo audio ADC with 118-dB
+      dynamic range.
+
+      ti,tad5212: Low-power stereo audio DAC with 120-dB dynamic range.
+    oneOf:
+      - items:
+          - enum:
+              - ti,adc3120
+              - ti,adc5120
+              - ti,pcm3120
+              - ti,pcm5120
+              - ti,pcm6120
+          - const: ti,adc6120
+      - items:
+          - enum:
+              - ti,pcmd512x
+              - ti,pcm9211
+              - ti,taa5212
+              - ti,tad5212
+          - const: ti,adc6120
+      - items:
+          - enum:
+              - ti,pcm3140
+              - ti,pcm5140
+              - ti,dix4192
+              - ti,pcm6140
+              - ti,pcm6260
+          - const: ti,pcm6240
+      - items:
+          - enum:
+              - ti,pcmd3140
+              - ti,pcmd3180
+              - ti,pcm1690
+              - ti,taa5412
+              - ti,tad5412
+          - const: ti,pcm6240
+      - enum:
+          - ti,adc6120
+          - ti,pcm6240
+
+  reg:
+    description:
+      I2C address, in multiple pcmdevices case, all the i2c address
+      aggregate as one Audio Device to support multiple audio slots.
+    minItems: 1
+    maxItems: 4
+
+  reset-gpios:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+    description:
+      Invalid only for ti,pcm1690 because of no INT pin.
+
+  '#sound-dai-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+
+allOf:
+  - $ref: dai-common.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - ti,pcm1690
+    then:
+      properties:
+        interrupts: false
+
+additionalProperties: false
+
+examples:
+  - |
+   #include <dt-bindings/gpio/gpio.h>
+   i2c {
+     /* example for two devices with interrupt support */
+     #address-cells = <1>;
+     #size-cells = <0>;
+     pcm6240: audio-codec@48 {
+       compatible = "ti,pcm6240";
+       reg = <0x48>, /* primary-device */
+             <0x4b>; /* secondary-device */
+       #sound-dai-cells = <0>;
+       reset-gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
+       interrupt-parent = <&gpio1>;
+       interrupts = <15>;
+     };
+   };
+...