dt-bindings: microchip: atmel,at91rm9200-tcb: add sama5d2 compatible

The sama5d2 TC block TIMER_CLOCK1 is different from the at91sam9x5 one.
Instead of being MCK / 2, it is the TCB GCLK.

Reviewed-by: Rob Herring <[e-mail]>
Signed-off-by: Alexandre Belloni <[e-mail]>
Signed-off-by: Daniel Lezcano <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml

···
       - enum:
           - atmel,at91rm9200-tcb
           - atmel,at91sam9x5-tcb
+          - atmel,sama5d2-tcb
       - const: simple-mfd
       - const: syscon
 
···
     description:
       List of clock names. Always includes t0_clk and slow clk. Also includes
       t1_clk and t2_clk if a clock per channel is available.
-    oneOf:
-      - items:
-        - const: t0_clk
-        - const: slow_clk
-      - items:
-        - const: t0_clk
-        - const: t1_clk
-        - const: t2_clk
-        - const: slow_clk
     minItems: 2
     maxItems: 4
 
···
     required:
       - compatible
       - reg
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: atmel,sama5d2-tcb
+    then:
+      properties:
+        clocks:
+          minItems: 3
+          maxItems: 3
+        clock-names:
+          items:
+            - const: t0_clk
+            - const: gclk
+            - const: slow_clk
+    else:
+      properties:
+        clocks:
+          minItems: 2
+          maxItems: 4
+        clock-names:
+          oneOf:
+            - items:
+              - const: t0_clk
+              - const: slow_clk
+            - items:
+              - const: t0_clk
+              - const: t1_clk
+              - const: t2_clk
+              - const: slow_clk
 
 required:
   - compatible