diff --git a/Documentation/devicetree/bindings/mips/ralink.txt b/Documentation/devicetree/bindings/mips/ralink.txt
index 3341945b51d9e..8cc0ab41578ca 100644
--- a/Documentation/devicetree/bindings/mips/ralink.txt
+++ b/Documentation/devicetree/bindings/mips/ralink.txt
@@ -17,3 +17,16 @@ value must be one of the following values:
   ralink,mt7620n-soc
   ralink,mt7628a-soc
   ralink,mt7688a-soc
+
+2. Boards
+
+GARDENA smart Gateway (MT7688)
+
+This board is based on the MediaTek MT7688 and equipped with 128 MiB
+of DDR and 8 MiB of flash (SPI NOR) and additional 128MiB SPI NAND
+storage.
+
+------------------------------
+Required root node properties:
+- compatible = "gardena,smart-gateway-mt7688", "ralink,mt7688a-soc",
+		"ralink,mt7628a-soc";
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 967e78c5ec0a1..05b3904a995b3 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -343,6 +343,8 @@ patternProperties:
     description: Freescale Semiconductor
   "^fujitsu,.*":
     description: Fujitsu Ltd.
+  "^gardena,.*":
+    description: GARDENA GmbH
   "^gateworks,.*":
     description: Gateworks Corporation
   "^gcw,.*":