projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 5b8b6484 LP |
1 | * Synopsys DWC Ethernet QoS IP version 4.10 driver (GMAC) |
| 2 | ||
| 3 | ||
| 4 | Required properties: | |
| 5 | - compatible: Should be "snps,dwc-qos-ethernet-4.10" | |
| 6 | - reg: Address and length of the register set for the device | |
| 7 | - clocks: Phandles to the reference clock and the bus clock | |
| 8 | - clock-names: Should be "phy_ref_clk" for the reference clock and "apb_pclk" | |
| 9 | for the bus clock. | |
| 10 | - interrupt-parent: Should be the phandle for the interrupt controller | |
| 11 | that services interrupts for this device | |
| 12 | - interrupts: Should contain the core's combined interrupt signal | |
| 13 | - phy-mode: See ethernet.txt file in the same directory | |
| 14 | ||
| 15 | Optional properties: | |
| 16 | - dma-coherent: Present if dma operations are coherent | |
| 17 | - mac-address: See ethernet.txt in the same directory | |
| 18 | - local-mac-address: See ethernet.txt in the same directory | |
| 19 | - snps,en-lpi: If present it enables use of the AXI low-power interface | |
| 20 | - snps,write-requests: Number of write requests that the AXI port can issue. | |
| 21 | It depends on the SoC configuration. | |
| 22 | - snps,read-requests: Number of read requests that the AXI port can issue. | |
| 23 | It depends on the SoC configuration. | |
| 24 | - snps,burst-map: Bitmap of allowed AXI burst lengts, with the LSB | |
| 25 | representing 4, then 8 etc. | |
| 26 | - snps,txpbl: DMA Programmable burst length for the TX DMA | |
| 27 | - snps,rxpbl: DMA Programmable burst length for the RX DMA | |
| 28 | - snps,en-tx-lpi-clockgating: Enable gating of the MAC TX clock during | |
| 29 | TX low-power mode. | |
| 30 | - phy-handle: See ethernet.txt file in the same directory | |
| 31 | - mdio device tree subnode: When the GMAC has a phy connected to its local | |
| 32 | mdio, there must be device tree subnode with the following | |
| 33 | required properties: | |
| 34 | - compatible: Must be "snps,dwc-qos-ethernet-mdio". | |
| 35 | - #address-cells: Must be <1>. | |
| 36 | - #size-cells: Must be <0>. | |
| 37 | ||
| 38 | For each phy on the mdio bus, there must be a node with the following | |
| 39 | fields: | |
| 40 | ||
| 41 | - reg: phy id used to communicate to phy. | |
| 42 | - device_type: Must be "ethernet-phy". | |
| 43 | - fixed-mode device tree subnode: see fixed-link.txt in the same directory | |
| 44 | ||
| 45 | Examples: | |
| 46 | ethernet2@40010000 { | |
| 47 | clock-names = "phy_ref_clk", "apb_pclk"; | |
| 48 | clocks = <&clkc 17>, <&clkc 15>; | |
| 49 | compatible = "snps,dwc-qos-ethernet-4.10"; | |
| 50 | interrupt-parent = <&intc>; | |
| 51 | interrupts = <0x0 0x1e 0x4>; | |
| 52 | reg = <0x40010000 0x4000>; | |
| 53 | phy-handle = <&phy2>; | |
| 54 | phy-mode = "gmii"; | |
| 55 | ||
| 56 | snps,en-tx-lpi-clockgating; | |
| 57 | snps,en-lpi; | |
| 58 | snps,write-requests = <2>; | |
| 59 | snps,read-requests = <16>; | |
| 60 | snps,burst-map = <0x7>; | |
| 61 | snps,txpbl = <8>; | |
| 62 | snps,rxpbl = <2>; | |
| 63 | ||
| 64 | dma-coherent; | |
| 65 | ||
| 66 | mdio { | |
| 67 | #address-cells = <0x1>; | |
| 68 | #size-cells = <0x0>; | |
| 69 | phy2: phy@1 { | |
| 70 | compatible = "ethernet-phy-ieee802.3-c22"; | |
| 71 | device_type = "ethernet-phy"; | |
| 72 | reg = <0x1>; | |
| 73 | }; | |
| 74 | }; | |
| 75 | }; |