diff --git a/Documentation/devicetree/bindings/serial/renesas,rsci.yaml b/Documentation/devicetree/bindings/serial/renesas,rsci.yaml
index 6b1f827a335b..1c2ed4cd58fd 100644
--- a/Documentation/devicetree/bindings/serial/renesas,rsci.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,rsci.yaml
@@ -10,17 +10,16 @@ maintainers:
   - Geert Uytterhoeven <geert+renesas@glider.be>
   - Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
 
-allOf:
-  - $ref: serial.yaml#
-
 properties:
   compatible:
     oneOf:
-      - items:
-          - const: renesas,r9a09g087-rsci # RZ/N2H
-          - const: renesas,r9a09g077-rsci # RZ/T2H
+      - enum:
+          - renesas,r9a09g047-rsci # RZ/G3E non FIFO mode
+          - renesas,r9a09g047-rscif # RZ/G3E FIFO mode
+          - renesas,r9a09g077-rsci # RZ/T2H
 
       - items:
+          - const: renesas,r9a09g087-rsci # RZ/N2H
           - const: renesas,r9a09g077-rsci # RZ/T2H
 
   reg:
@@ -42,14 +41,40 @@ properties:
 
   clocks:
     minItems: 2
-    maxItems: 3
+    maxItems: 6
 
   clock-names:
-    minItems: 2
+    oneOf:
+      - items:
+          - const: operation
+          - const: bus
+      - items:
+          - const: operation
+          - const: bus
+          - const: sck # optional external clock input
+      - items:
+          - const: bus
+          - const: tclk
+          - const: tclk_div64
+          - const: tclk_div16
+          - const: tclk_div4
+      - items:
+          - const: bus
+          - const: tclk
+          - const: tclk_div64
+          - const: tclk_div16
+          - const: tclk_div4
+          - const: sck # optional external clock input
+
+  resets:
+    items:
+      - description: Input for resetting the APB clock
+      - description: Input for resetting TCLK
+
+  reset-names:
     items:
-      - const: operation
-      - const: bus
-      - const: sck # optional external clock input
+      - const: presetn
+      - const: tresetn
 
   power-domains:
     maxItems: 1
@@ -62,6 +87,44 @@ required:
   - clock-names
   - power-domains
 
+allOf:
+  - $ref: serial.yaml#
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a09g077-rsci
+    then:
+      properties:
+        clocks:
+          maxItems: 3
+
+        clock-names:
+          maxItems: 3
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,r9a09g047-rsci
+              - renesas,r9a09g047-rscif
+    then:
+      properties:
+        clocks:
+          minItems: 5
+
+        clock-names:
+          minItems: 5
+
+      required:
+        - resets
+        - reset-names
+    else:
+      properties:
+        resets: false
+
 unevaluatedProperties: false
 
 examples: