mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
25d12e1dde
This patch add a new binding that allows non-PHY MII time stamping devices to find their buses. The new documentation covers both the generic binding and one upcoming user. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
36 lines
846 B
Plaintext
36 lines
846 B
Plaintext
ZHAW InES PTP time stamping IP core
|
|
|
|
The IP core needs two different kinds of nodes. The control node
|
|
lives somewhere in the memory map and specifies the address of the
|
|
control registers. There can be up to three port handles placed as
|
|
attributes of PHY nodes. These associate a particular MII bus with a
|
|
port index within the IP core.
|
|
|
|
Required properties of the control node:
|
|
|
|
- compatible: "ines,ptp-ctrl"
|
|
- reg: physical address and size of the register bank
|
|
|
|
Required format of the port handle within the PHY node:
|
|
|
|
- timestamper: provides control node reference and
|
|
the port channel within the IP core
|
|
|
|
Example:
|
|
|
|
tstamper: timestamper@60000000 {
|
|
compatible = "ines,ptp-ctrl";
|
|
reg = <0x60000000 0x80>;
|
|
};
|
|
|
|
ethernet@80000000 {
|
|
...
|
|
mdio {
|
|
...
|
|
ethernet-phy@3 {
|
|
...
|
|
timestamper = <&tstamper 0>;
|
|
};
|
|
};
|
|
};
|