[PATCH RFC 1/3] dt-bindings: sound: Add NXP TFA98XX TFA2 amplifier binding

From: David Heidelberg <[email protected]>

Add a YAML devicetree binding schema for the NXP/Goodix TFA98XX TFA2
family of I2C-controlled smart speaker amplifiers with on-chip DSP.

The binding covers supported chip variants (TFA9872 through
TFA9912) and documents the optional reset and IRQ GPIO properties.

Signed-off-by: David Heidelberg <[email protected]>
---
 .../devicetree/bindings/sound/nxp,tfa98xx.yaml     | 54 ++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/nxp,tfa98xx.yaml b/Documentation/devicetree/bindings/sound/nxp,tfa98xx.yaml
new file mode 100644
index 0000000000000..e80c046894454
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nxp,tfa98xx.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: (GPL-2.0-only)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nxp,tfa98xx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP/Goodix TFA98xx (TFA2) smart speaker amplifiers
+
+maintainers:
+  - David Heidelberg <[email protected]>
+
+description:
+  The TFA98xx (TFA2) family are I2C-controlled class-D speaker amplifiers
+  with an integrated CoolFlux DSP.
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - nxp,tfa9894
+
+  reg:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+
+  '#sound-dai-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - '#sound-dai-cells'
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        audio-codec@34 {
+            compatible = "nxp,tfa9894";
+            reg = <0x34>;
+            reset-gpios = <&tlmm 69 GPIO_ACTIVE_HIGH>;
+            #sound-dai-cells = <0>;
+        };
+    };

-- 
2.53.0