Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | ZHAW InES PTP time stamping IP core |
| 2 | |
| 3 | The IP core needs two different kinds of nodes. The control node |
| 4 | lives somewhere in the memory map and specifies the address of the |
| 5 | control registers. There can be up to three port handles placed as |
| 6 | attributes of PHY nodes. These associate a particular MII bus with a |
| 7 | port index within the IP core. |
| 8 | |
| 9 | Required properties of the control node: |
| 10 | |
| 11 | - compatible: "ines,ptp-ctrl" |
| 12 | - reg: physical address and size of the register bank |
| 13 | |
| 14 | Required format of the port handle within the PHY node: |
| 15 | |
| 16 | - timestamper: provides control node reference and |
| 17 | the port channel within the IP core |
| 18 | |
| 19 | Example: |
| 20 | |
| 21 | tstamper: timestamper@60000000 { |
| 22 | compatible = "ines,ptp-ctrl"; |
| 23 | reg = <0x60000000 0x80>; |
| 24 | }; |
| 25 | |
| 26 | ethernet@80000000 { |
| 27 | ... |
| 28 | mdio { |
| 29 | ... |
| 30 | ethernet-phy@3 { |
| 31 | ... |
| 32 | timestamper = <&tstamper 0>; |
| 33 | }; |
| 34 | }; |
| 35 | }; |