[PATCH net-next 1/4] dt-bindings: net: dsa: microchip: add SGMII port support to KSZ9477 switch

[<Tristram.Ha@microchip.com>]

From: Tristram Ha <tristram.ha@microchip.com>

The SGMII module of KSZ9477 switch can be setup in 3 ways: 0 for direct
connect, 1 for 1000BaseT SFP, and 2 for 10/100/1000 SFP.

SFP is typically used so the default is 1.  The driver can detect
10/100/1000 SFP and change the mode to 2.  For direct connect this mode
has to be explicitly set to 0 as driver cannot detect that
configuration.

Signed-off-by: Tristram Ha <tristram.ha@microchip.com>
---
 .../devicetree/bindings/net/dsa/microchip,ksz.yaml   | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
index 52acc15ebcbf..b4a9746556bf 100644
--- a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
@@ -71,6 +71,13 @@ properties:
     enum: [2000, 4000, 8000, 12000, 16000, 20000, 24000, 28000]
     default: 8000
 
+  microchip,sgmii-mode:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      SGMII mode to use for the SGMII port
+    enum: [0, 1, 2]
+    default: 1
+
   interrupts:
     maxItems: 1
 
@@ -137,6 +144,7 @@ examples:
             compatible = "microchip,ksz9477";
             reg = <0>;
             reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
+            sgmii-mode = <1>;
 
             spi-max-frequency = <44000000>;
 
@@ -173,6 +181,10 @@ examples:
                         full-duplex;
                     };
                 };
+                port@6 {
+                    reg = <6>;
+                    label = "lan6";
+                };
             };
         };
 
-- 
2.34.1