diff --git a/Documentation/devicetree/bindings/i2c/i2c-rcar.txt b/Documentation/devicetree/bindings/i2c/i2c-rcar.txt
index cad39aee9f73..a777477e4547 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-rcar.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-rcar.txt
@@ -13,6 +13,7 @@ Required properties:
 	"renesas,i2c-r8a7794" if the device is a part of a R8A7794 SoC.
 	"renesas,i2c-r8a7795" if the device is a part of a R8A7795 SoC.
 	"renesas,i2c-r8a7796" if the device is a part of a R8A7796 SoC.
+	"renesas,i2c-r8a77970" if the device is a part of a R8A77970 SoC.
 	"renesas,rcar-gen1-i2c" for a generic R-Car Gen1 compatible device.
 	"renesas,rcar-gen2-i2c" for a generic R-Car Gen2 or RZ/G1 compatible
 				device.