[PATCH net v2] dt-bindings: ethernet: eswin: fix hsp-sp-csr backward compatibility

[lizhi2]

From: Zhi Li <lizhi2@xxxxxxxxxxxxxxxxxx>

c36069c6f46c added two optional cells to eswin,hsp-sp-csr, but
omitted minItems: 4.

As a result, dt-schema implicitly required all 6 cells, which
broke backward compatibility with existing 4-cell device trees.

Add minItems: 4 to preserve backward compatibility.

Fixes: c36069c6f46c ("dt-bindings: ethernet: eswin: add optional TXD and RXD delay register offsets")
Reported-by: Sashiko AI <sashiko-bot@xxxxxxxxxx>
Closes: https://lore.kernel.org/all/20260519022334.35742C2BCB7@xxxxxxxxxxxxxxx/
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxxxxx>
Signed-off-by: Zhi Li <lizhi2@xxxxxxxxxxxxxxxxxx>
---
Changes in v2:
  - Reference c36069c6f46c explicitly instead of "previous change".
  - Improve commit message formatting and line wrapping.
  - No functional change.
  - Link to v1:
    https://lore.kernel.org/lkml/20260525052441.1637-1-lizhi2@xxxxxxxxxxxxxxxxxx/
---
 Documentation/devicetree/bindings/net/eswin,eic7700-eth.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/net/eswin,eic7700-eth.yaml b/Documentation/devicetree/bindings/net/eswin,eic7700-eth.yaml
index b66ae6300faf..65882ff79d8d 100644
--- a/Documentation/devicetree/bindings/net/eswin,eic7700-eth.yaml
+++ b/Documentation/devicetree/bindings/net/eswin,eic7700-eth.yaml
@@ -84,7 +84,8 @@ properties:
       This reference is provided for background information only.
     $ref: /schemas/types.yaml#/definitions/phandle-array
     items:
-      - items:
+      - minItems: 4
+        items:
           - description: Phandle to HSP(High-Speed Peripheral) device
           - description: Offset of phy control register for internal
                          or external clock selection
-- 
2.25.1