On Fri, Sep 05, 2025 at 10:29:33AM +0200, Krzysztof Kozlowski wrote:

quoted

diff --git a/Documentation/devicetree/bindings/phy/fsl,lynx-28g.yaml b/Documentation/devicetree/bindings/phy/fsl,lynx-28g.yaml
index ff9f9ca0f19c..55d773c8d0e4 100644
--- a/Documentation/devicetree/bindings/phy/fsl,lynx-28g.yaml
+++ b/Documentation/devicetree/bindings/phy/fsl,lynx-28g.yaml

@@ -11,8 +11,17 @@ maintainers:
 
 properties:
   compatible:
-    enum:
-      - fsl,lynx-28g
+    oneOf:
+      - items:
+          - const: fsl,lynx-28g

Don't change that part. Previous enum was correct. You want oneOf and
enum.

quoted

+      - items:
+          - enum:
+              - fsl,lx2160a-serdes1
+              - fsl,lx2160a-serdes2
+              - fsl,lx2160a-serdes3

What are the differences? number of lanes? For this you can take
num-lanes property.

Number of lanes, but on LX2162A it's a bit weird. It supports 4 lanes
but they are numbered 4, 5, 6, 7.

Also supported protocols for each lane. Just one example: lane 0 of
fsl,lx2160a-serdes1 supports PCIe, SGMII, USXGMII, 40GbE, whereas lane 0
of fsl,lx2160a-serdes2 supports PCIe, SGMII.