Renesas RZN1 GMAC uses exactly one interrupt in in-kernel DTS and common
snps,dwmac.yaml binding is flexible, so define precise constrain for
this device.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 .../devicetree/bindings/net/renesas,rzn1-gmac.yaml       | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/renesas,rzn1-gmac.yaml b/Documentation/devicetree/bindings/net/renesas,rzn1-gmac.yaml
index d9a8d586e260..16dd7a2631ab 100644
--- a/Documentation/devicetree/bindings/net/renesas,rzn1-gmac.yaml
+++ b/Documentation/devicetree/bindings/net/renesas,rzn1-gmac.yaml
@@ -30,6 +30,15 @@ properties:
       - const: renesas,rzn1-gmac
       - const: snps,dwmac
 
+  interrupts:
+    maxItems: 3
+
+  interrupt-names:
+    items:
+      - const: macirq
+      - const: eth_wake_irq
+      - const: eth_lpi
+
   pcs-handle:
     description:
       phandle pointing to a PCS sub-node compatible with
-- 
2.48.1