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 };
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