dt-bindings: net: Add fixed-link support

Update device-tree binding with fixed-link support.

With fixed-link support the formerly required property 'phy-handle'
is now optional if 'fixed-link' child is present.

Signed-off-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/devicetree/bindings/net/nixge.txt b/Documentation/devicetree/bindings/net/nixge.txt
index bb2929f..85d7240 100644 (file)
--- a/Documentation/devicetree/bindings/net/nixge.txt
+++ b/Documentation/devicetree/bindings/net/nixge.txt
@@ -12,12 +12,14 @@ Required properties:
 - interrupts: Should contain tx and rx interrupt
 - interrupt-names: Should be "rx" and "tx"
 - phy-mode: See ethernet.txt file in the same directory.
-- phy-handle: See ethernet.txt file in the same directory.
 - nvmem-cells: Phandle of nvmem cell containing the MAC address
 - nvmem-cell-names: Should be "address"
 
 Optional properties:
 - mdio subnode to indicate presence of MDIO controller
+- fixed-link : Assume a fixed link. See fixed-link.txt in the same directory.
+  Use instead of phy-handle.
+- phy-handle: See ethernet.txt file in the same directory.
 
 Examples (10G generic PHY):
        nixge0: ethernet@40000000 {
@@ -59,3 +61,32 @@ Examples (10G generic PHY, no MDIO):
                phy-mode = "xgmii";
                phy-handle = <&ethernet_phy1>;
        };
+
+Examples (1G generic fixed-link + MDIO):
+       nixge0: ethernet@40000000 {
+               compatible = "ni,xge-enet-2.00";
+               reg = <0x40000000 0x6000>;
+
+               nvmem-cells = <&eth1_addr>;
+               nvmem-cell-names = "address";
+
+               interrupts = <0 29 IRQ_TYPE_LEVEL_HIGH>, <0 30 IRQ_TYPE_LEVEL_HIGH>;
+               interrupt-names = "rx", "tx";
+               interrupt-parent = <&intc>;
+
+               phy-mode = "xgmii";
+
+               fixed-link {
+                       speed = <1000>;
+                       pause;
+                       link-gpios = <&gpio0 63 GPIO_ACTIVE_HIGH>;
+               };
+
+               mdio {
+                       ethernet_phy1: ethernet-phy@4 {
+                               compatible = "ethernet-phy-ieee802.3-c22";
+                               reg = <4>;
+                       };
+               };
+
+       };