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76 lines
2.9 KiB
76 lines
2.9 KiB
* AMD 10GbE driver (amd-xgbe) |
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Required properties: |
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- compatible: Should be "amd,xgbe-seattle-v1a" |
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- reg: Address and length of the register sets for the device |
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- MAC registers |
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- PCS registers |
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- SerDes Rx/Tx registers |
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- SerDes integration registers (1/2) |
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- SerDes integration registers (2/2) |
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- interrupts: Should contain the amd-xgbe interrupt(s). The first interrupt |
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listed is required and is the general device interrupt. If the optional |
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amd,per-channel-interrupt property is specified, then one additional |
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interrupt for each DMA channel supported by the device should be specified. |
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The last interrupt listed should be the PCS auto-negotiation interrupt. |
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- clocks: |
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- DMA clock for the amd-xgbe device (used for calculating the |
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correct Rx interrupt watchdog timer value on a DMA channel |
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for coalescing) |
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- PTP clock for the amd-xgbe device |
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- clock-names: Should be the names of the clocks |
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- "dma_clk" for the DMA clock |
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- "ptp_clk" for the PTP clock |
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- phy-mode: See ethernet.txt file in the same directory |
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Optional properties: |
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- dma-coherent: Present if dma operations are coherent |
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- amd,per-channel-interrupt: Indicates that Rx and Tx complete will generate |
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a unique interrupt for each DMA channel - this requires an additional |
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interrupt be configured for each DMA channel |
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- amd,speed-set: Speed capabilities of the device |
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0 - 1GbE and 10GbE (default) |
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1 - 2.5GbE and 10GbE |
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The MAC address will be determined using the optional properties defined in |
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ethernet.txt. |
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The following optional properties are represented by an array with each |
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value corresponding to a particular speed. The first array value represents |
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the setting for the 1GbE speed, the second value for the 2.5GbE speed and |
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the third value for the 10GbE speed. All three values are required if the |
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property is used. |
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- amd,serdes-blwc: Baseline wandering correction enablement |
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0 - Off |
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1 - On |
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- amd,serdes-cdr-rate: CDR rate speed selection |
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- amd,serdes-pq-skew: PQ (data sampling) skew |
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- amd,serdes-tx-amp: TX amplitude boost |
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- amd,serdes-dfe-tap-config: DFE taps available to run |
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- amd,serdes-dfe-tap-enable: DFE taps to enable |
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Example: |
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xgbe@e0700000 { |
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compatible = "amd,xgbe-seattle-v1a"; |
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reg = <0 0xe0700000 0 0x80000>, |
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<0 0xe0780000 0 0x80000>, |
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<0 0xe1240800 0 0x00400>, |
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<0 0xe1250000 0 0x00060>, |
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<0 0xe1250080 0 0x00004>; |
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interrupt-parent = <&gic>; |
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interrupts = <0 325 4>, |
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<0 326 1>, <0 327 1>, <0 328 1>, <0 329 1>, |
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<0 323 4>; |
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amd,per-channel-interrupt; |
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clocks = <&xgbe_dma_clk>, <&xgbe_ptp_clk>; |
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clock-names = "dma_clk", "ptp_clk"; |
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phy-mode = "xgmii"; |
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mac-address = [ 02 a1 a2 a3 a4 a5 ]; |
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amd,speed-set = <0>; |
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amd,serdes-blwc = <1>, <1>, <0>; |
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amd,serdes-cdr-rate = <2>, <2>, <7>; |
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amd,serdes-pq-skew = <10>, <10>, <30>; |
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amd,serdes-tx-amp = <15>, <15>, <10>; |
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amd,serdes-dfe-tap-config = <3>, <3>, <1>; |
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amd,serdes-dfe-tap-enable = <0>, <0>, <127>; |
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};
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