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author | Richard Cochran <richardcochran@gmail.com> | 2019-12-26 05:16:17 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2019-12-26 06:51:33 +0300 |
commit | 25d12e1dde28fafd2ac37afadd24252fa19b80cd (patch) | |
tree | 578954e306a290dcbe66a3e021f5328cfbe51dff /Documentation/devicetree/bindings/ptp/ptp-ines.txt | |
parent | 767ff483731502a0fc34f34a3a0851aca175eb71 (diff) | |
download | linux-25d12e1dde28fafd2ac37afadd24252fa19b80cd.tar.xz |
dt-bindings: ptp: Introduce MII time stamping devices.
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>
Diffstat (limited to 'Documentation/devicetree/bindings/ptp/ptp-ines.txt')
-rw-r--r-- | Documentation/devicetree/bindings/ptp/ptp-ines.txt | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/ptp/ptp-ines.txt b/Documentation/devicetree/bindings/ptp/ptp-ines.txt new file mode 100644 index 000000000000..4c242bd1ce9c --- /dev/null +++ b/Documentation/devicetree/bindings/ptp/ptp-ines.txt @@ -0,0 +1,35 @@ +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>; + }; + }; + }; |