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