dt-bindings: timer: renesas: ostm: Document Renesas RZ/G2L OSTM

Document the General Timer Module(a.k.a OSTM) found on the RZ/G2L SoC.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211112184413.4391-3-biju.das.jz@bp.renesas.comSigned-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

Documentation/devicetree/bindings/timer/renesas,ostm.yaml

@@ -21,9 +21,10 @@ properties:
   compatible:
     items:
       - enum:
-          - renesas,r7s72100-ostm # RZ/A1H
-          - renesas,r7s9210-ostm  # RZ/A2M
-      - const: renesas,ostm       # Generic
+          - renesas,r7s72100-ostm  # RZ/A1H
+          - renesas,r7s9210-ostm   # RZ/A2M
+          - renesas,r9a07g044-ostm # RZ/G2{L,LC}
+      - const: renesas,ostm        # Generic
 
   reg:
     maxItems: 1
@@ -37,6 +38,9 @@ properties:
   power-domains:
     maxItems: 1
 
+  resets:
+    maxItems: 1
+
 required:
   - compatible
   - reg
@@ -44,6 +48,16 @@ required:
   - clocks
   - power-domains
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - renesas,r9a07g044-ostm
+then:
+  required:
+    - resets
+
 additionalProperties: false
 
 examples: