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46 lines
1.4 KiB
46 lines
1.4 KiB
* Synopsys ARC EMAC 10/100 Ethernet driver (EMAC) |
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Required properties: |
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- compatible: Should be "snps,arc-emac" |
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- reg: Address and length of the register set for the device |
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- interrupts: Should contain the EMAC interrupts |
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- max-speed: see ethernet.txt file in the same directory. |
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- phy: see ethernet.txt file in the same directory. |
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Optional properties: |
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- phy-reset-gpios : Should specify the gpio for phy reset |
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- phy-reset-duration : Reset duration in milliseconds. Should present |
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only if property "phy-reset-gpios" is available. Missing the property |
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will have the duration be 1 millisecond. Numbers greater than 1000 are |
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invalid and 1 millisecond will be used instead. |
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Clock handling: |
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The clock frequency is needed to calculate and set polling period of EMAC. |
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It must be provided by one of: |
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- clock-frequency: CPU frequency. |
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- clocks: reference to the clock supplying the EMAC. |
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Child nodes of the driver are the individual PHY devices connected to the |
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MDIO bus. They must have a "reg" property given the PHY address on the MDIO bus. |
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Examples: |
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ethernet@c0fc2000 { |
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compatible = "snps,arc-emac"; |
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reg = <0xc0fc2000 0x3c>; |
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interrupts = <6>; |
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mac-address = [ 00 11 22 33 44 55 ]; |
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clock-frequency = <80000000>; |
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/* or */ |
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clocks = <&emac_clock>; |
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max-speed = <100>; |
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phy = <&phy0>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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phy0: ethernet-phy@0 { |
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reg = <1>; |
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}; |
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};
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