dt-bindings: usb: amlogic,meson-g12a-usb-ctrl: add the Amlogic GXL and GXM...

dt-bindings: usb: amlogic,meson-g12a-usb-ctrl: add the Amlogic GXL and GXM Families USB Glue Bindings

The Amlogic GXL and GXM is slightly different from the Amlogic G12A Glue.

The GXL SoCs only embeds 2 USB2 PHYs and no USB3 PHYs, and the GXM SoCs
embeds 3 USB2 PHYs.
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

Documentation/devicetree/bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml

@@ -25,9 +25,13 @@ description: |
   The Amlogic A1 embeds a DWC3 USB IP Core configured for USB2 in
   host-only mode.
 
+  The Amlogic GXL & GXM SoCs doesn't embed an USB3 PHY.
+
 properties:
   compatible:
     enum:
+      - amlogic,meson-gxl-usb-ctrl
+      - amlogic,meson-gxm-usb-ctrl
       - amlogic,meson-g12a-usb-ctrl
       - amlogic,meson-a1-usb-ctrl
 
@@ -41,6 +45,11 @@ properties:
 
   clocks:
     minItems: 1
+    maxItems: 3
+
+  clock-names:
+    minItems: 1
+    maxItems: 3
 
   resets:
     minItems: 1
@@ -52,10 +61,8 @@ properties:
     maxItems: 1
 
   phy-names:
-    items:
-      - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
-      - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
-      - const: usb3-phy0 # USB3 PHY if USB3_0 is used
+    minItems: 1
+    maxItems: 3
 
   phys:
     minItems: 1
@@ -89,6 +96,61 @@ required:
   - dr_mode
 
 allOf:
+  - if:
+      properties:
+        compatible:
+          enum:
+            - amlogic,meson-g12a-usb-ctrl
+
+    then:
+      properties:
+        phy-names:
+          items:
+            - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
+            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
+            - const: usb3-phy0 # USB3 PHY if USB3_0 is used
+  - if:
+      properties:
+        compatible:
+          enum:
+            - amlogic,meson-gxl-usb-ctrl
+
+    then:
+      properties:
+        clocks:
+          minItems: 2
+        clock-names:
+          items:
+            - const: usb_ctrl
+            - const: ddr
+        phy-names:
+          items:
+            - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
+            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
+      required:
+        - clock-names
+  - if:
+      properties:
+        compatible:
+          enum:
+            - amlogic,meson-gxm-usb-ctrl
+
+    then:
+      properties:
+        clocks:
+          minItems: 2
+        clock-names:
+          items:
+            - const: usb_ctrl
+            - const: ddr
+        phy-names:
+          items:
+            - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
+            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
+            - const: usb2-phy2 # USB2 PHY2 if USBOTG_C port is used
+
+      required:
+        - clock-names
   - if:
       properties:
         compatible:
@@ -97,6 +159,9 @@ allOf:
 
     then:
       properties:
+        phy-names:
+          items:
+            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
         clocks:
           minItems: 3
         clock-names: