dt-bindings: usb: generic-ehci: fix schema structure and add at91sam9g45 constraints

Add clock and phy constraints for atmel,at91sam9g45-ehci and reorganize
the allOf section to fix dtbs_check warnings.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Charan Pedumuru <charan.pedumuru@gmail.com>
Link: https://patch.msgid.link/20260327-atmel-usb-v4-3-eb8b6e49b29d@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Charan-Pedumuru

Documentation/devicetree/bindings/usb/atmel-usb.txt

@@ -1,29 +1,5 @@
 Atmel SOC USB controllers
 
-EHCI
-
-Required properties:
- - compatible: Should be "atmel,at91sam9g45-ehci" for USB controllers
-   used in host mode.
- - reg: Address and length of the register set for the device
- - interrupts: Should contain ehci interrupt
- - clocks: Should reference the peripheral and the UTMI clocks
- - clock-names: Should contain two strings
-		"ehci_clk" for the peripheral clock
-		"usb_clk" for the UTMI clock
-
-Optional properties:
- - phy_type : For multi port host USB controllers, should be one of
-   "utmi", or "hsic".
-
-usb1: ehci@800000 {
-	compatible = "atmel,at91sam9g45-ehci", "usb-ehci";
-	reg = <0x00800000 0x100000>;
-	interrupts = <22 4>;
-	clocks = <&utmi>, <&uhphs_clk>;
-	clock-names = "usb_clk", "ehci_clk";
-};
-
 AT91 USB device controller
 
 Required properties:

Documentation/devicetree/bindings/usb/generic-ehci.yaml

@@ -9,19 +9,6 @@ title: USB EHCI Controller
 maintainers:
   - Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 
-allOf:
-  - $ref: usb-hcd.yaml
-  - if:
-      properties:
-        compatible:
-          not:
-            contains:
-              const: ibm,usb-ehci-440epx
-    then:
-      properties:
-        reg:
-          maxItems: 1
-
 properties:
   compatible:
     oneOf:
@@ -167,6 +154,39 @@ required:
   - reg
   - interrupts
 
+allOf:
+  - $ref: usb-hcd.yaml
+  - if:
+      properties:
+        compatible:
+          not:
+            contains:
+              const: ibm,usb-ehci-440epx
+    then:
+      properties:
+        reg:
+          maxItems: 1
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: atmel,at91sam9g45-ehci
+    then:
+      properties:
+        clock-names:
+          items:
+            - const: usb_clk
+            - const: ehci_clk
+
+        phy_type:
+          enum:
+            - utmi
+            - hsic
+
+      required:
+        - clocks
+        - clock-names
+
 unevaluatedProperties: false
 
 examples: