1 Time stamps from MII bus snooping devices
2
3 This binding supports non-PHY devices that sno
4 provide time stamps. In contrast to PHY time
5 can simply attach their interface directly to
6 alone MII time stamping drivers use this bindi
7 connection between the snooping device and a g
8
9 Non-PHY MII time stamping drivers typically ta
10 interface over another bus like I2C, SPI, UART
11 peripheral. This controller device is associa
12 time stamping channels, each of which snoops o
13
14 The "timestamper" property lives in a phy node
15 stamping channel from the controller device to
16
17 Example:
18
19 tstamper: timestamper@10000000 {
20 compatible = "ines,ptp-ctrl";
21 reg = <0x10000000 0x80>;
22 };
23
24 ethernet@20000000 {
25 mdio {
26 ethernet-phy@1 {
27 timestamper =
28 };
29 };
30 };
31
32 ethernet@30000000 {
33 mdio {
34 ethernet-phy@2 {
35 timestamper =
36 };
37 };
38 };
39
40 In this example, time stamps from the MII bus
41 appear on time stamp channel 0 (zero), and tho
42 channel 1.
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