ASoC: dt-bindings: nxp, tfa989x: Add rcv-gpios property for tfa9897

Add optional rcv-gpios property specific to tfa9897 receiver mode.
Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211031210956.812101-2-vincent.knecht@mailoo.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/nxp,tfa989x.yaml

@@ -24,11 +24,23 @@ properties:
   '#sound-dai-cells':
     const: 0
 
+  rcv-gpios:
+    description: optional GPIO to be asserted when receiver mode is enabled.
+
   sound-name-prefix: true
 
   vddd-supply:
     description: regulator phandle for the VDDD power supply.
 
+if:
+  not:
+    properties:
+      compatible:
+        const: nxp,tfa9897
+then:
+  properties:
+    rcv-gpios: false
+
 required:
   - compatible
   - reg
@@ -55,3 +67,32 @@ examples:
         #sound-dai-cells = <0>;
       };
     };
+
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      speaker_codec_top: audio-codec@34 {
+        compatible = "nxp,tfa9897";
+        reg = <0x34>;
+        vddd-supply = <&pm8916_l6>;
+        rcv-gpios = <&msmgpio 50 GPIO_ACTIVE_HIGH>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&speaker_top_default>;
+        sound-name-prefix = "Speaker Top";
+        #sound-dai-cells = <0>;
+      };
+
+      speaker_codec_bottom: audio-codec@36 {
+        compatible = "nxp,tfa9897";
+        reg = <0x36>;
+        vddd-supply = <&pm8916_l6>;
+        rcv-gpios = <&msmgpio 111 GPIO_ACTIVE_HIGH>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&speaker_bottom_default>;
+        sound-name-prefix = "Speaker Bottom";
+        #sound-dai-cells = <0>;
+      };
+    };