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ftgmac100: Document device-tree binding
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Documentation/devicetree/bindings/net/ftgmac100.txt
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Documentation/devicetree/bindings/net/ftgmac100.txt
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* Faraday Technology FTGMAC100 gigabit ethernet controller
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Required properties:
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- compatible: "faraday,ftgmac100"
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Must also contain one of these if used as part of an Aspeed AST2400
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or 2500 family SoC as they have some subtle tweaks to the
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implementation:
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- "aspeed,ast2400-mac"
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- "aspeed,ast2500-mac"
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- reg: Address and length of the register set for the device
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- interrupts: Should contain ethernet controller interrupt
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Optional properties:
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- phy-mode: See ethernet.txt file in the same directory. If the property is
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absent, "rgmii" is assumed. Supported values are "rgmii*" and "rmii" for
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aspeed parts. Other (unknown) parts will accept any value.
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- use-ncsi: Use the NC-SI stack instead of an MDIO PHY. Currently assumes
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rmii (100bT) but kept as a separate property in case NC-SI grows support
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for a gigabit link.
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- no-hw-checksum: Used to disable HW checksum support. Here for backward
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compatibility as the driver now should have correct defaults based on
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the SoC.
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Example:
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mac0: ethernet@1e660000 {
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compatible = "aspeed,ast2500-mac", "faraday,ftgmac100";
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reg = <0x1e660000 0x180>;
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interrupts = <2>;
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status = "okay";
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use-ncsi;
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};
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