ASoC: dt-bindings: max98388: add amplifier driver

Add dt-bindings information for Analog Devices MAX98388 I2S Amplifier

Signed-off-by: Ryan Lee <ryans.lee@analog.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230613060945.183128-1-ryan.lee.analog@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/sound/adi,max98388.yaml b/Documentation/devicetree/bindings/sound/adi,max98388.yaml
new file mode 100644 (file)
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+++ b/Documentation/devicetree/bindings/sound/adi,max98388.yaml
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/adi,max98388.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices MAX98388 Speaker Amplifier
+
+maintainers:
+  - Ryan Lee <ryans.lee@analog.com>
+
+description:
+  The MAX98388 is a mono Class-D speaker amplifier with I/V feedback.
+  The device provides a PCM interface for audio data and a standard
+  I2C interface for control data communication.
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - adi,max98388
+
+  reg:
+    maxItems: 1
+
+  '#sound-dai-cells':
+    const: 0
+
+  adi,vmon-slot-no:
+    description: slot number of the voltage feedback monitor
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 15
+    default: 0
+
+  adi,imon-slot-no:
+    description: slot number of the current feedback monitor
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 15
+    default: 1
+
+  adi,interleave-mode:
+    description:
+      For cases where a single combined channel for the I/V feedback data
+      is not sufficient, the device can also be configured to share
+      a single data output channel on alternating frames.
+      In this configuration, the current and voltage data will be frame
+      interleaved on a single output channel.
+    type: boolean
+
+  reset-gpios:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - '#sound-dai-cells'
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        max98388: amplifier@39 {
+            compatible = "adi,max98388";
+            reg = <0x39>;
+            #sound-dai-cells = <0>;
+            adi,vmon-slot-no = <0>;
+            adi,imon-slot-no = <1>;
+            adi,interleave-mode;
+            reset-gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+        };
+    };