xref: /freebsd/sys/contrib/device-tree/Bindings/net/imx-dwmac.txt (revision 9768746ba83efa02837c5b9c66348db6e900208f) 
1IMX8 glue layer controller, NXP imx8 families support Synopsys MAC 5.10a IP.
2
3This file documents platform glue layer for IMX.
4Please see stmmac.txt for the other unchanged properties.
5
6The device node has following properties.
7
8Required properties:
9- compatible:  Should be "nxp,imx8mp-dwmac-eqos" to select glue layer
10	       and "snps,dwmac-5.10a" to select IP version.
11- clocks: Must contain a phandle for each entry in clock-names.
12- clock-names: Should be "stmmaceth" for the host clock.
13	       Should be "pclk" for the MAC apb clock.
14	       Should be "ptp_ref" for the MAC timer clock.
15	       Should be "tx" for the MAC RGMII TX clock:
16	       Should be "mem" for EQOS MEM clock.
17		- "mem" clock is required for imx8dxl platform.
18		- "mem" clock is not required for imx8mp platform.
19- interrupt-names: Should contain a list of interrupt names corresponding to
20		   the interrupts in the interrupts property, if available.
21		   Should be "macirq" for the main MAC IRQ
22		   Should be "eth_wake_irq" for the IT which wake up system
23- intf_mode: Should be phandle/offset pair. The phandle to the syscon node which
24	     encompases the GPR register, and the offset of the GPR register.
25		- required for imx8mp platform.
26		- is optional for imx8dxl platform.
27
28Optional properties:
29- intf_mode: is optional for imx8dxl platform.
30- snps,rmii_refclk_ext: to select RMII reference clock from external.
31
32Example:
33	eqos: ethernet@30bf0000 {
34		compatible = "nxp,imx8mp-dwmac-eqos", "snps,dwmac-5.10a";
35		reg = <0x30bf0000 0x10000>;
36		interrupts = <GIC_SPI 134 IRQ_TYPE_LEVEL_HIGH>,
37			     <GIC_SPI 135 IRQ_TYPE_LEVEL_HIGH>;
38		interrupt-names = "eth_wake_irq", "macirq";
39		clocks = <&clk IMX8MP_CLK_ENET_QOS_ROOT>,
40			 <&clk IMX8MP_CLK_QOS_ENET_ROOT>,
41			 <&clk IMX8MP_CLK_ENET_QOS_TIMER>,
42			 <&clk IMX8MP_CLK_ENET_QOS>;
43		clock-names = "stmmaceth", "pclk", "ptp_ref", "tx";
44		assigned-clocks = <&clk IMX8MP_CLK_ENET_AXI>,
45				  <&clk IMX8MP_CLK_ENET_QOS_TIMER>,
46				  <&clk IMX8MP_CLK_ENET_QOS>;
47		assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_266M>,
48					 <&clk IMX8MP_SYS_PLL2_100M>,
49					 <&clk IMX8MP_SYS_PLL2_125M>;
50		assigned-clock-rates = <0>, <100000000>, <125000000>;
51		nvmem-cells = <&eth_mac0>;
52		nvmem-cell-names = "mac-address";
53		nvmem_macaddr_swap;
54		intf_mode = <&gpr 0x4>;
55		status = "disabled";
56	};
57