Documentation/devicetree/bindings/net/dsa/lan9303.txt

   1 SMSC/MicroChip LAN9303 three port ethernet switch
   2 -------------------------------------------------
   3
   4 Required properties:
   5
   6 - compatible: should be
   7   - "smsc,lan9303-i2c" for I2C managed mode
   8     or
   9   - "smsc,lan9303-mdio" for mdio managed mode
  10
  11 Optional properties:
  12
  13 - reset-gpios: GPIO to be used to reset the whole device
  14 - reset-duration: reset duration in milliseconds, defaults to 200 ms
  15
  16 Subnodes:
  17
  18 The integrated switch subnode should be specified according to the binding
  19 described in dsa/dsa.txt. The CPU port of this switch is always port 0.
  20
  21 Note: always use 'reg = <0/1/2>;' for the three DSA ports, even if the device is
  22 configured to use 1/2/3 instead. This hardware configuration will be
  23 auto-detected and mapped accordingly.
  24
  25 Example:
  26
  27 I2C managed mode:
  28
  29         master: masterdevice@X {
  30
  31                 fixed-link { /* RMII fixed link to LAN9303 */
  32                         speed = <100>;
  33                         full-duplex;
  34                 };
  35         };
  36
  37         switch: switch@a {
  38                 compatible = "smsc,lan9303-i2c";
  39                 reg = <0xa>;
  40                 reset-gpios = <&gpio7 6 GPIO_ACTIVE_LOW>;
  41                 reset-duration = <200>;
  42
  43                 ports {
  44                         #address-cells = <1>;
  45                         #size-cells = <0>;
  46
  47                         port@0 { /* RMII fixed link to master */
  48                                 reg = <0>;
  49                                 label = "cpu";
  50                                 ethernet = <&master>;
  51                         };
  52
  53                         port@1 { /* external port 1 */
  54                                 reg = <1>;
  55                                 label = "lan1";
  56                         };
  57
  58                         port@2 { /* external port 2 */
  59                                 reg = <2>;
  60                                 label = "lan2";
  61                         };
  62                 };
  63         };
  64
  65 MDIO managed mode:
  66
  67         master: masterdevice@X {
  68                 phy-handle = <&switch>;
  69
  70                 mdio {
  71                         #address-cells = <1>;
  72                         #size-cells = <0>;
  73
  74                         switch: switch-phy@0 {
  75                                 compatible = "smsc,lan9303-mdio";
  76                                 reg = <0>;
  77                                 reset-gpios = <&gpio7 6 GPIO_ACTIVE_LOW>;
  78                                 reset-duration = <100>;
  79
  80                                 ports {
  81                                         #address-cells = <1>;
  82                                         #size-cells = <0>;
  83
  84                                         port@0 {
  85                                                 reg = <0>;
  86                                                 label = "cpu";
  87                                                 ethernet = <&master>;
  88                                         };
  89
  90                                         port@1 { /* external port 1 */
  91                                                 reg = <1>;
  92                                                 label = "lan1";
  93                                         };
  94
  95                                         port@2 { /* external port 2 */
  96                                                 reg = <2>;
  97                                                 label = "lan2";
  98                                         };
  99                                 };
 100                         };
 101                 };
 102         };