| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | ethernet = <&master>; |
| 50 | }; |
| 51 | |
| 52 | port@1 { /* external port 1 */ |
| 53 | reg = <1>; |
| 54 | label = "lan1"; |
| 55 | }; |
| 56 | |
| 57 | port@2 { /* external port 2 */ |
| 58 | reg = <2>; |
| 59 | label = "lan2"; |
| 60 | }; |
| 61 | }; |
| 62 | }; |
| 63 | |
| 64 | MDIO managed mode: |
| 65 | |
| 66 | master: masterdevice@X { |
| 67 | phy-handle = <&switch>; |
| 68 | |
| 69 | mdio { |
| 70 | #address-cells = <1>; |
| 71 | #size-cells = <0>; |
| 72 | |
| 73 | switch: switch-phy@0 { |
| 74 | compatible = "smsc,lan9303-mdio"; |
| 75 | reg = <0>; |
| 76 | reset-gpios = <&gpio7 6 GPIO_ACTIVE_LOW>; |
| 77 | reset-duration = <100>; |
| 78 | |
| 79 | ports { |
| 80 | #address-cells = <1>; |
| 81 | #size-cells = <0>; |
| 82 | |
| 83 | port@0 { |
| 84 | reg = <0>; |
| 85 | ethernet = <&master>; |
| 86 | }; |
| 87 | |
| 88 | port@1 { /* external port 1 */ |
| 89 | reg = <1>; |
| 90 | label = "lan1"; |
| 91 | }; |
| 92 | |
| 93 | port@2 { /* external port 2 */ |
| 94 | reg = <2>; |
| 95 | label = "lan2"; |
| 96 | }; |
| 97 | }; |
| 98 | }; |
| 99 | }; |
| 100 | }; |