e7f44b65b5
Pull devicetree updates from Rob Herring: - Rewrite of the unflattening code to avoid recursion and lessen the stack usage. - Rewrite of the phandle args parsing code to get rid of the fixed args size. This is needed for IOMMU code. - Sync to latest dtc which adds more dts style checking. These warnings are enabled with "W=1" compiles. - Tegra documentation updates related to the above warnings. - A bunch of spelling and other doc fixes. - Various vendor prefix additions. * tag 'devicetree-for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (52 commits) devicetree: Add Creative Technology vendor id gpio: dt-bindings: add ibm,ppc4xx-gpio binding of/unittest: Remove unnecessary module.h header inclusion drivers/of: Fix build warning in populate_node() drivers/of: Fix depth when unflattening devicetree of: dynamic: changeset prop-update revert fix drivers/of: Export of_detach_node() drivers/of: Return allocated memory from of_fdt_unflatten_tree() drivers/of: Specify parent node in of_fdt_unflatten_tree() drivers/of: Rename unflatten_dt_node() drivers/of: Avoid recursively calling unflatten_dt_node() drivers/of: Split unflatten_dt_node() of: include errno.h in of_graph.h of: document refcount incrementation of of_get_cpu_node() Documentation: dt: soc: fix spelling mistakes Documentation: dt: power: fix spelling mistake Documentation: dt: pinctrl: fix spelling mistake Documentation: dt: opp: fix spelling mistake Documentation: dt: net: fix spelling mistakes Documentation: dt: mtd: fix spelling mistake ...
77 lines
2.8 KiB
Plaintext
77 lines
2.8 KiB
Plaintext
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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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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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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