[PATCH net 1/3] dt-bindings: net: thead,th1520-gmac: Describe APB interface clock

[Yao Zi]

Besides ones for GMAC core and peripheral registers, the TH1520 GMAC
requires one more clock for configuring APB glue registers. Describe
it in the binding.

Though the clock is essential for operation, it's not marked as required
for now to avoid introducing new dt-binding warnings to existing dts.

Fixes: f920ce04c399 ("dt-bindings: net: Add T-HEAD dwmac support")
Signed-off-by: Yao Zi <ziyao@xxxxxxxxxxx>
---
 .../devicetree/bindings/net/thead,th1520-gmac.yaml        | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/thead,th1520-gmac.yaml b/Documentation/devicetree/bindings/net/thead,th1520-gmac.yaml
index 6d9de3303762..fea9fbc1d006 100644
--- a/Documentation/devicetree/bindings/net/thead,th1520-gmac.yaml
+++ b/Documentation/devicetree/bindings/net/thead,th1520-gmac.yaml
@@ -59,14 +59,18 @@ properties:
       - const: apb
 
   clocks:
+    minItems: 2
     items:
       - description: GMAC main clock
       - description: Peripheral registers interface clock
+      - description: APB glue registers interface clock
 
   clock-names:
+    minItems: 2
     items:
       - const: stmmaceth
       - const: pclk
+      - const: apb
 
   interrupts:
     items:
@@ -88,8 +92,8 @@ examples:
         compatible = "thead,th1520-gmac", "snps,dwmac-3.70a";
         reg = <0xe7070000 0x2000>, <0xec003000 0x1000>;
         reg-names = "dwmac", "apb";
-        clocks = <&clk 1>, <&clk 2>;
-        clock-names = "stmmaceth", "pclk";
+        clocks = <&clk 1>, <&clk 2>, <&clk 3>;
+        clock-names = "stmmaceth", "pclk", "apb";
         interrupts = <66>;
         interrupt-names = "macirq";
         phy-mode = "rgmii-id";
-- 
2.50.1