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Hisilicon Network Subsystem NIC controller
Required properties:
- compatible: "hisilicon,hns-nic-v1" or "hisilicon,hns-nic-v2".
"hisilicon,hns-nic-v1" is for hip05.
"hisilicon,hns-nic-v2" is for Hi1610 and Hi1612.
- ae-handle: accelerator engine handle for hns,
specifies a reference to the associating hardware driver node.
see Documentation/devicetree/bindings/net/hisilicon-hns-dsaf.txt
- port-id: is the index of port provided by DSAF (the accelerator). DSAF can
connect to 8 PHYs. Port 0 to 1 are both used for administration purpose. They
are called debug ports.
The remaining 6 PHYs are taken according to the mode of DSAF.
In NIC mode of DSAF, all 6 PHYs are taken as ethernet ports to the CPU. The
port-id can be 2 to 7. Here is the diagram:
+-----+---------------+
| CPU |
+-+-+-+---+-+-+-+-+-+-+
| | | | | | | |
debug service
port port
(0,1) (2-7)
In Switch mode of DSAF, all 6 PHYs are taken as physical ports connect to a
LAN Switch while the CPU side assume itself have one single NIC connect to
this switch. In this case, the port-id will be 2 only.
+-----+---------------+
| CPU |
+-+-+-+---+-+-+-+-+-+-+
| | service| port(2)
debug +------------+
port | switch |
(0,1) +-+-+-+-+-+-++
| | | | | |
external port
This attribute is remained for compatible purpose. It is not recommended to
use it in new code.
- port-idx-in-ae: is the index of port provided by AE.
In NIC mode of DSAF, all 6 PHYs of service DSAF are taken as ethernet ports
to the CPU. The port-idx-in-ae can be 0 to 5. Here is the diagram:
+-----+---------------+
| CPU |
+-+-+-+---+-+-+-+-+-+-+
| | | | | | | |
debug debug service
port port port
(0) (0) (0-5)
In Switch mode of DSAF, all 6 PHYs of service DSAF are taken as physical
ports connected to a LAN Switch while the CPU side assume itself have one
single NIC connected to this switch. In this case, the port-idx-in-ae
will be 0 only.
+-----+-----+------+------+
| CPU |
+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | service| port(0)
debug debug +------------+
port port | switch |
(0) (0) +-+-+-+-+-+-++
| | | | | |
external port
- local-mac-address: mac addr of the ethernet interface
Example:
ethernet@0{
compatible = "hisilicon,hns-nic-v1";
ae-handle = <&dsaf0>;
port-idx-in-ae = <0>;
local-mac-address = [a2 14 e4 4b 56 76];
};
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