diff --git a/Documentation/devicetree/bindings/phy/fsl,lynx-28g.yaml b/Documentation/devicetree/bindings/phy/fsl,lynx-28g.yaml
index e96229c2f8fb..8375bca810cc 100644
--- a/Documentation/devicetree/bindings/phy/fsl,lynx-28g.yaml
+++ b/Documentation/devicetree/bindings/phy/fsl,lynx-28g.yaml
@@ -9,10 +9,37 @@ title: Freescale Lynx 28G SerDes PHY
 maintainers:
   - Ioana Ciornei <ioana.ciornei@nxp.com>
 
+description:
+  The Lynx 28G is a multi-lane, multi-protocol SerDes (PCIe, SATA, Ethernet)
+  present in multiple instances on NXP LX2160A and LX2162A SoCs. All instances
+  share a common register map and programming model, however they differ in
+  supported protocols per lane in a way that is not detectable by said
+  programming model without prior knowledge. The distinction is made through
+  the compatible string.
+
 properties:
   compatible:
-    enum:
-      - fsl,lynx-28g
+    oneOf:
+      - const: fsl,lynx-28g
+        deprecated: true
+        description:
+          Legacy compatibility string for Lynx 28G SerDes. Any assumption
+          regarding whether a certain lane supports a certain protocol may
+          be incorrect. Deprecated except when used as a fallback. Use
+          device-specific strings instead.
+      - items:
+          - const: fsl,lx2160a-serdes1
+          - const: fsl,lynx-28g
+      - items:
+          - const: fsl,lx2160a-serdes2
+          - const: fsl,lynx-28g
+      - items:
+          - const: fsl,lx2162a-serdes1
+          - const: fsl,lynx-28g
+      - items:
+          - const: fsl,lx2162a-serdes2
+          - const: fsl,lynx-28g
+      - const: fsl,lx2160a-serdes3
 
   reg:
     maxItems: 1
@@ -60,7 +87,7 @@ examples:
       #size-cells = <2>;
 
       serdes@1ea0000 {
-        compatible = "fsl,lynx-28g";
+        compatible = "fsl,lx2160a-serdes1", "fsl,lynx-28g";
         reg = <0x0 0x1ea0000 0x0 0x1e30>;
         #address-cells = <1>;
         #size-cells = <0>;