summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/net/dsa/lan9303.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/net/dsa/lan9303.txt')
-rw-r--r--Documentation/devicetree/bindings/net/dsa/lan9303.txt100
1 files changed, 100 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/dsa/lan9303.txt b/Documentation/devicetree/bindings/net/dsa/lan9303.txt
new file mode 100644
index 000000000..46a732087
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/dsa/lan9303.txt
@@ -0,0 +1,100 @@
+SMSC/MicroChip LAN9303 three port ethernet switch
+-------------------------------------------------
+
+Required properties:
+
+- compatible: should be
+ - "smsc,lan9303-i2c" for I2C managed mode
+ or
+ - "smsc,lan9303-mdio" for mdio managed mode
+
+Optional properties:
+
+- reset-gpios: GPIO to be used to reset the whole device
+- reset-duration: reset duration in milliseconds, defaults to 200 ms
+
+Subnodes:
+
+The integrated switch subnode should be specified according to the binding
+described in dsa/dsa.txt. The CPU port of this switch is always port 0.
+
+Note: always use 'reg = <0/1/2>;' for the three DSA ports, even if the device is
+configured to use 1/2/3 instead. This hardware configuration will be
+auto-detected and mapped accordingly.
+
+Example:
+
+I2C managed mode:
+
+ master: masterdevice@X {
+
+ fixed-link { /* RMII fixed link to LAN9303 */
+ speed = <100>;
+ full-duplex;
+ };
+ };
+
+ switch: switch@a {
+ compatible = "smsc,lan9303-i2c";
+ reg = <0xa>;
+ reset-gpios = <&gpio7 6 GPIO_ACTIVE_LOW>;
+ reset-duration = <200>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 { /* RMII fixed link to master */
+ reg = <0>;
+ ethernet = <&master>;
+ };
+
+ port@1 { /* external port 1 */
+ reg = <1>;
+ label = "lan1";
+ };
+
+ port@2 { /* external port 2 */
+ reg = <2>;
+ label = "lan2";
+ };
+ };
+ };
+
+MDIO managed mode:
+
+ master: masterdevice@X {
+ phy-handle = <&switch>;
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ switch: switch-phy@0 {
+ compatible = "smsc,lan9303-mdio";
+ reg = <0>;
+ reset-gpios = <&gpio7 6 GPIO_ACTIVE_LOW>;
+ reset-duration = <100>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ ethernet = <&master>;
+ };
+
+ port@1 { /* external port 1 */
+ reg = <1>;
+ label = "lan1";
+ };
+
+ port@2 { /* external port 2 */
+ reg = <2>;
+ label = "lan2";
+ };
+ };
+ };
+ };
+ };