dt-bindings: net: bluetooth: Add device tree bindings for QTI chip wcn6750

This patch enables regulators and gpios for the Qualcomm Bluetooth wcn6750
controller.
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Documentation/devicetree/bindings/net/qualcomm-bluetooth.yaml

@@ -22,11 +22,17 @@ properties:
       - qcom,wcn3991-bt
       - qcom,wcn3998-bt
       - qcom,qca6390-bt
+      - qcom,wcn6750-bt
 
   enable-gpios:
     maxItems: 1
     description: gpio specifier used to enable chip
 
+  swctrl-gpios:
+    maxItems: 1
+    description: gpio specifier is used to find status
+                 of clock supply to SoC
+
   clocks:
     maxItems: 1
     description: clock provided to the controller (SUSCLK_32KHZ)
@@ -43,6 +49,30 @@ properties:
   vddch0-supply:
     description: VDD_CH0 supply regulator handle
 
+  vddaon-supply:
+    description: VDD_AON supply regulator handle
+
+  vddbtcxmx-supply:
+    description: VDD_BT_CXMX supply regulator handle
+
+  vddrfacmn-supply:
+    description: VDD_RFA_CMN supply regulator handle
+
+  vddrfa0p8-supply:
+    description: VDD_RFA_0P8 suppply regulator handle
+
+  vddrfa1p7-supply:
+    description: VDD_RFA_1P7 supply regulator handle
+
+  vddrfa1p2-supply:
+    description: VDD_RFA_1P2 supply regulator handle
+
+  vddrfa2p2-supply:
+    description: VDD_RFA_2P2 supply regulator handle
+
+  vddasd-supply:
+    description: VDD_ASD supply regulator handle
+
   max-speed:
     description: see Documentation/devicetree/bindings/serial/serial.yaml
 
@@ -85,6 +115,25 @@ allOf:
         - vddrf-supply
         - vddch0-supply
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,wcn6750-bt
+    then:
+      required:
+        - enable-gpios
+        - swctrl-gpios
+        - vddio-supply
+        - vddaon-supply
+        - vddbtcxmx-supply
+        - vddrfacmn-supply
+        - vddrfa0p8-supply
+        - vddrfa1p7-supply
+        - vddrfa1p2-supply
+        - vddasd-supply
+
 examples:
   - |
     #include <dt-bindings/gpio/gpio.h>
@@ -110,3 +159,25 @@ examples:
             firmware-name = "crnv21.bin";
         };
     };
+  - |
+    serial {
+
+        bluetooth {
+            compatible = "qcom,wcn6750-bt";
+            pinctrl-names = "default";
+            pinctrl-0 = <&bt_en_default>;
+            enable-gpios = <&tlmm 85 GPIO_ACTIVE_HIGH>;
+            swctrl-gpios = <&tlmm 86 GPIO_ACTIVE_HIGH>;
+            vddio-supply = <&vreg_l19b_1p8>;
+            vddaon-supply = <&vreg_s7b_0p9>;
+            vddbtcxmx-supply = <&vreg_s7b_0p9>;
+            vddrfacmn-supply = <&vreg_s7b_0p9>;
+            vddrfa0p8-supply = <&vreg_s7b_0p9>;
+            vddrfa1p7-supply = <&vreg_s1b_1p8>;
+            vddrfa1p2-supply = <&vreg_s8b_1p2>;
+            vddrfa2p2-supply = <&vreg_s1c_2p2>;
+            vddasd-supply = <&vreg_l11c_2p8>;
+            max-speed = <3200000>;
+            firmware-name = "msnv11.bin";
+        };
+    };