diff --git a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
index 2ac709a4c472..fc62fb2a68ac 100644
--- a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
+++ b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
@@ -10,6 +10,21 @@ maintainers:
   - Chen-Yu Tsai <wens@csie.org>
   - Maxime Ripard <mripard@kernel.org>
 
+# We need a select here so we don't match all nodes with 'snps,dwmac'
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - allwinner,sun8i-a83t-emac
+          - allwinner,sun8i-h3-emac
+          - allwinner,sun8i-r40-gmac
+          - allwinner,sun8i-v3s-emac
+          - allwinner,sun50i-a64-emac
+          - allwinner,sun55i-a523-gmac200
+  required:
+    - compatible
+
 properties:
   compatible:
     oneOf:
@@ -26,6 +41,9 @@ properties:
               - allwinner,sun50i-h616-emac0
               - allwinner,sun55i-a523-gmac0
           - const: allwinner,sun50i-a64-emac
+      - items:
+          - const: allwinner,sun55i-a523-gmac200
+          - const: snps,dwmac-4.20a
 
   reg:
     maxItems: 1
@@ -37,14 +55,21 @@ properties:
     const: macirq
 
   clocks:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
 
   clock-names:
-    const: stmmaceth
+    minItems: 1
+    items:
+      - const: stmmaceth
+      - const: mbus
 
   phy-supply:
     description: PHY regulator
 
+  power-domains:
+    maxItems: 1
+
   syscon:
     $ref: /schemas/types.yaml#/definitions/phandle
     description:
@@ -191,6 +216,42 @@ allOf:
             - mdio-parent-bus
             - mdio@1
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: allwinner,sun55i-a523-gmac200
+    then:
+      properties:
+        clocks:
+          minItems: 2
+        clock-names:
+          minItems: 2
+        tx-internal-delay-ps:
+          default: 0
+          minimum: 0
+          maximum: 700
+          multipleOf: 100
+          description:
+            External RGMII PHY TX clock delay chain value in ps.
+        rx-internal-delay-ps:
+          default: 0
+          minimum: 0
+          maximum: 3100
+          multipleOf: 100
+          description:
+            External RGMII PHY TX clock delay chain value in ps.
+      required:
+        - power-domains
+    else:
+      properties:
+        clocks:
+          maxItems: 1
+        clock-names:
+          maxItems: 1
+        power-domains: false
+
+
 unevaluatedProperties: false
 
 examples:
@@ -323,4 +384,34 @@ examples:
         };
     };
 
+  - |
+    ethernet@4510000 {
+        compatible = "allwinner,sun55i-a523-gmac200",
+                     "snps,dwmac-4.20a";
+        reg = <0x04510000 0x10000>;
+        clocks = <&ccu 117>, <&ccu 79>;
+        clock-names = "stmmaceth", "mbus";
+        resets = <&ccu 43>;
+        reset-names = "stmmaceth";
+        interrupts = <0 47 4>;
+        interrupt-names = "macirq";
+        pinctrl-names = "default";
+        pinctrl-0 = <&rgmii1_pins>;
+        power-domains = <&pck600 4>;
+        syscon = <&syscon>;
+        phy-handle = <&ext_rgmii_phy_1>;
+        phy-mode = "rgmii-id";
+        snps,fixed-burst;
+        snps,axi-config = <&gmac1_stmmac_axi_setup>;
+
+        mdio {
+            compatible = "snps,dwmac-mdio";
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            ext_rgmii_phy_1: ethernet-phy@1 {
+                reg = <1>;
+            };
+        };
+    };
 ...