dt-bindings: usb: dwc3: Add support for rk3562

The USB dwc3 core on Rockchip's RK3562 is the same as the one already
included in generic snps,dwc3. Extend the binding accordingly to allow

	compatible = "rockchip,rk3562-dwc3", "snps,dwc3";

There are 4 clocks with different name sequency, add schema for it.

Signed-off-by: Kever Yang <[email protected]>
Reviewed-by: Rob Herring (Arm) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: keveryang

Documentation/devicetree/bindings/usb/rockchip,dwc3.yaml

@@ -26,6 +26,7 @@ select:
       contains:
         enum:
           - rockchip,rk3328-dwc3
+          - rockchip,rk3562-dwc3
           - rockchip,rk3568-dwc3
           - rockchip,rk3576-dwc3
           - rockchip,rk3588-dwc3
@@ -37,6 +38,7 @@ properties:
     items:
       - enum:
           - rockchip,rk3328-dwc3
+          - rockchip,rk3562-dwc3
           - rockchip,rk3568-dwc3
           - rockchip,rk3576-dwc3
           - rockchip,rk3588-dwc3
@@ -72,6 +74,7 @@ properties:
       - enum:
           - grf_clk
           - utmi
+          - pipe
       - const: pipe
 
   power-domains:
@@ -111,6 +114,22 @@ allOf:
             - const: suspend_clk
             - const: bus_clk
             - const: grf_clk
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: rockchip,rk3562-dwc3
+    then:
+      properties:
+        clocks:
+          minItems: 4
+          maxItems: 4
+        clock-names:
+          items:
+            - const: ref_clk
+            - const: suspend_clk
+            - const: bus_clk
+            - const: pipe
   - if:
       properties:
         compatible: