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Registered: ‎02-09-2017

How to let linux use both ethernet controllers?

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In my board, I use two ethernet controllers. My design is as follows.

QQ截图20180529220356.png

 

The two phy has different addresses here.

 

My devicetree is as follows.

/dts-v1/;

/ {
	#address-cells = <0x1>;
	#size-cells = <0x1>;
	compatible = "xlnx,zynq-7000";

	cpus {
		#address-cells = <0x1>;
		#size-cells = <0x0>;

		cpu@0 {
			compatible = "arm,cortex-a9";
			device_type = "cpu";
			reg = <0x0>;
			clocks = <0x1 0x3>;
			clock-latency = <0x3e8>;
			cpu0-supply = <0x2>;
			operating-points = <0xa4cb8 0xf4240 0x5265c 0xf4240>;
		};

		cpu@1 {
			compatible = "arm,cortex-a9";
			device_type = "cpu";
			reg = <0x1>;
			clocks = <0x1 0x3>;
		};
	};

	fpga-full {
		compatible = "fpga-region";
		fpga-mgr = <0x3>;
		#address-cells = <0x1>;
		#size-cells = <0x1>;
		ranges;
	};

	pmu@f8891000 {
		compatible = "arm,cortex-a9-pmu";
		interrupts = <0x0 0x5 0x4 0x0 0x6 0x4>;
		interrupt-parent = <0x4>;
		reg = <0xf8891000 0x1000 0xf8893000 0x1000>;
	};

	fixedregulator {
		compatible = "regulator-fixed";
		regulator-name = "VCCPINT";
		regulator-min-microvolt = <0xf4240>;
		regulator-max-microvolt = <0xf4240>;
		regulator-boot-on;
		regulator-always-on;
		linux,phandle = <0x2>;
		phandle = <0x2>;
	};

	amba {
		u-boot,dm-pre-reloc;
		compatible = "simple-bus";
		#address-cells = <0x1>;
		#size-cells = <0x1>;
		interrupt-parent = <0x4>;
		ranges;

		adc@f8007100 {
			compatible = "xlnx,zynq-xadc-1.00.a";
			reg = <0xf8007100 0x20>;
			interrupts = <0x0 0x7 0x4>;
			interrupt-parent = <0x4>;
			clocks = <0x1 0xc>;
		};

		gpio@e000a000 {
			compatible = "xlnx,zynq-gpio-1.0";
			#gpio-cells = <0x2>;
			clocks = <0x1 0x2a>;
			gpio-controller;
			interrupt-controller;
			#interrupt-cells = <0x2>;
			interrupt-parent = <0x4>;
			interrupts = <0x0 0x14 0x4>;
			reg = <0xe000a000 0x1000>;
			emio-gpio-width = <0x40>;
			gpio-mask-high = <0x0>;
			gpio-mask-low = <0x5600>;
		};


		interrupt-controller@f8f01000 {
			compatible = "arm,cortex-a9-gic";
			#interrupt-cells = <0x3>;
			interrupt-controller;
			reg = <0xf8f01000 0x1000 0xf8f00100 0x100>;
			num_cpus = <0x2>;
			num_interrupts = <0x60>;
			linux,phandle = <0x4>;
			phandle = <0x4>;
		};

		cache-controller@f8f02000 {
			compatible = "arm,pl310-cache";
			reg = <0xf8f02000 0x1000>;
			interrupts = <0x0 0x2 0x4>;
			arm,data-latency = <0x3 0x2 0x2>;
			arm,tag-latency = <0x2 0x2 0x2>;
			cache-unified;
			cache-level = <0x2>;
		};

		memory-controller@f8006000 {
			compatible = "xlnx,zynq-ddrc-a05";
			reg = <0xf8006000 0x1000>;
		};

		ocmc@f800c000 {
			compatible = "xlnx,zynq-ocmc-1.0";
			interrupt-parent = <0x4>;
			interrupts = <0x0 0x3 0x4>;
			reg = <0xf800c000 0x1000>;
		};

		serial@e0000000 {
			compatible = "xlnx,xuartps", "cdns,uart-r1p8";
			status = "okay";
			clocks = <0x1 0x17 0x1 0x28>;
			clock-names = "uart_clk", "pclk";
			reg = <0xe0000000 0x1000>;
			interrupts = <0x0 0x1b 0x4>;
			device_type = "serial";
			port-number = <0x0>;
		};


		spi@e000d000 {
			clock-names = "ref_clk", "pclk";
			clocks = <0x1 0xa 0x1 0x2b>;
			compatible = "xlnx,zynq-qspi-1.0";
			status = "okay";
			interrupt-parent = <0x4>;
			interrupts = <0x0 0x13 0x4>;
			reg = <0xe000d000 0x1000>;
			#address-cells = <0x1>;
			#size-cells = <0x0>;
			is-dual = <0x1>;
			num-cs = <0x1>;
		};

		ethernet@e000b000 {
			compatible = "xlnx,ps7-ethernet-1.00.a";
			reg = <0xe000b000 0x1000>;
			status = "okay";
			interrupts = <0x0 0x16 0x4>;
			clocks = <0x1 0xd 0x1 0x1e>;
			clock-names = "ref_clk", "aper_clk";
			#address-cells = <0x1>;
			#size-cells = <0x0>;
			enet-reset = <0x4 0x2f 0x0>;
			local-mac-address = [00 0a 35 00 00 00];
			phy-mode = "rgmii";
			phy-handle = <0x7>;
			xlnx,eth-mode = <0x1>;
			xlnx,has-mdio = <0x1>;
			xlnx,ptp-enet-clock = <0x69f6bcb>;

			mdio {
				#address-cells = <0x1>;
				#size-cells = <0x0>;

				phy@1 {
					compatible = "marvell,88e1111";
					device_type = "ethernet-phy";
					reg = <0x1>;
					linux,phandle = <0x7>;
					phandle = <0x7>;
				};
			};
		};

		ethernet@e000c000 {
			compatible = "xlnx,ps7-ethernet-1.00.a";
			reg = <0xe000c000 0x1000>;
			status = "okay";
			interrupts = <0x0 0x2d 0x4>;
			clocks = <0x1 0xe 0x1 0x1f>;
			clock-names = "ref_clk", "aper_clk";
			#address-cells = <0x1>;
			#size-cells = <0x0>;
			enet-reset = <0x4 0x2f 0x0>;
			local-mac-address = [00 0a 36 00 00 00];
			phy-mode = "rgmii";
			phy-handle = <0x8>;
			xlnx,eth-mode = <0x1>;
			xlnx,has-mdio = <0x1>;
			xlnx,ptp-enet-clock = <0x69f6bcb>;

			mdio {
				#address-cells = <0x1>;
				#size-cells = <0x0>;

				phy@18 {
					compatible = "marvell,88e1111";
					device_type = "ethernet-phy";
					reg = <0x12>;
					linux,phandle = <0x8>;
					phandle = <0x8>;
				};
			};
		};

		slcr@f8000000 {
			#address-cells = <0x1>;
			#size-cells = <0x1>;
			compatible = "xlnx,zynq-slcr", "syscon", "simple-mfd";
			reg = <0xf8000000 0x1000>;
			ranges;
			linux,phandle = <0x5>;
			phandle = <0x5>;

			clkc@100 {
				#clock-cells = <0x1>;
				compatible = "xlnx,ps7-clkc";
				fclk-enable = <0x1>;
				clock-output-names = "armpll", "ddrpll", "iopll", "cpu_6or4x", "cpu_3or2x", "cpu_2x", "cpu_1x", "ddr2x", "ddr3x", "dci", "lqspi", "smc", "pcap", "gem0", "gem1", "fclk0", "fclk1", "fclk2", "fclk3", "can0", "can1", "sdio0", "sdio1", "uart0", "uart1", "spi0", "spi1", "dma", "usb0_aper", "usb1_aper", "gem0_aper", "gem1_aper", "sdio0_aper", "sdio1_aper", "spi0_aper", "spi1_aper", "can0_aper", "can1_aper", "i2c0_aper", "i2c1_aper", "uart0_aper", "uart1_aper", "gpio_aper", "lqspi_aper", "smc_aper", "swdt", "dbg_trc", "dbg_apb";
				reg = <0x100 0x100>;
				ps-clk-frequency = <0x2faf080>;
				linux,phandle = <0x1>;
				phandle = <0x1>;
			};

			rstc@200 {
				compatible = "xlnx,zynq-reset";
				reg = <0x200 0x48>;
				#reset-cells = <0x1>;
				syscon = <0x5>;
			};

			pinctrl@700 {
				compatible = "xlnx,pinctrl-zynq";
				reg = <0x700 0x200>;
				syscon = <0x5>;
			};
		};

		dmac@f8003000 {
			compatible = "arm,pl330", "arm,primecell";
			reg = <0xf8003000 0x1000>;
			interrupt-parent = <0x4>;
			interrupt-names = "abort", "dma0", "dma1", "dma2", "dma3", "dma4", "dma5", "dma6", "dma7";
			interrupts = <0x0 0xd 0x4 0x0 0xe 0x4 0x0 0xf 0x4 0x0 0x10 0x4 0x0 0x11 0x4 0x0 0x28 0x4 0x0 0x29 0x4 0x0 0x2a 0x4 0x0 0x2b 0x4>;
			#dma-cells = <0x1>;
			#dma-channels = <0x8>;
			#dma-requests = <0x4>;
			clocks = <0x1 0x1b>;
			clock-names = "apb_pclk";
		};

		devcfg@f8007000 {
			compatible = "xlnx,zynq-devcfg-1.0";
			interrupt-parent = <0x4>;
			interrupts = <0x0 0x8 0x4>;
			reg = <0xf8007000 0x100>;
			clocks = <0x1 0xc 0x1 0xf 0x1 0x10 0x1 0x11 0x1 0x12>;
			clock-names = "ref_clk", "fclk0", "fclk1", "fclk2", "fclk3";
			syscon = <0x5>;
			linux,phandle = <0x3>;
			phandle = <0x3>;
		};

		efuse@f800d000 {
			compatible = "xlnx,zynq-efuse";
			reg = <0xf800d000 0x20>;
		};

		timer@f8f00200 {
			compatible = "arm,cortex-a9-global-timer";
			reg = <0xf8f00200 0x20>;
			interrupts = <0x1 0xb 0x301>;
			interrupt-parent = <0x4>;
			clocks = <0x1 0x4>;
		};

		timer@f8001000 {
			interrupt-parent = <0x4>;
			interrupts = <0x0 0xa 0x4 0x0 0xb 0x4 0x0 0xc 0x4>;
			compatible = "cdns,ttc";
			clocks = <0x1 0x6>;
			reg = <0xf8001000 0x1000>;
		};

		timer@f8002000 {
			interrupt-parent = <0x4>;
			interrupts = <0x0 0x25 0x4 0x0 0x26 0x4 0x0 0x27 0x4>;
			compatible = "cdns,ttc";
			clocks = <0x1 0x6>;
			reg = <0xf8002000 0x1000>;
		};

		timer@f8f00600 {
			interrupt-parent = <0x4>;
			interrupts = <0x1 0xd 0x301>;
			compatible = "arm,cortex-a9-twd-timer";
			reg = <0xf8f00600 0x20>;
			clocks = <0x1 0x4>;
		};

		watchdog@f8005000 {
			clocks = <0x1 0x2d>;
			compatible = "cdns,wdt-r1p2";
			interrupt-parent = <0x4>;
			interrupts = <0x0 0x9 0x1>;
			reg = <0xf8005000 0x1000>;
			timeout-sec = <0xa>;
		};
	};

	amba_pl {
		#address-cells = <0x1>;
		#size-cells = <0x1>;
		compatible = "simple-bus";
		ranges;
	};

	chosen {
		bootargs = "earlycon";
		stdout-path = "serial0:115200n8";
	};

	aliases {
		ethernet0 = "/amba/ethernet@e000b000";
		ethernet1 = "/amba/ethernet@e000c000";
		serial0 = "/amba/serial@e0000000";
		spi0 = "/amba/spi@e000d000";
	};

	memory {
		device_type = "memory";
		reg = <0x0 0x40000000>;
	};
};

I added some code in the xemacps_probe function.

 

When the linux boot I can see it probes two devices.

1.JPG

 

However, when linux begin to configure the interface, It just config the eth0(e000b000) controller.

Also I added some info here.

2.JPG

 

I can see only one eth here.

3.JPG

 

Can someone tell me how to let linux find both controllers and config both interfaces? Thanks very much.

 

The attachment is my xilinx_emacps.c code.

 

Thanks very much

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1 Solution

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Moderator
Moderator
1,316 Views
Registered: ‎09-12-2007

There is a patch to support multiple PHY on the one MDIO:

https://www.xilinx.com/support/answers/69132.html

 

So, your DT would look like (system-user.dtsi)

mdio {
         compatible = "cdns,macb-mdio";
         reg = <0xe000b000 0x1000>;
         clocks = <&clkc 30>, <&clkc 30>, <&clkc 13>;
         clock-names = "pclk", "hclk", "tx_clk";
         #address-cells = <1>;
         #size-cells = <0>;
         phy0: phy@0 {
              compatible = "marvell";
              device_type = "ethernet-phy";
              reg = <0>;
        } ;
            phy1: phy@1 {
                 compatible = "marvell";
                 device_type = "ethernet-phy";
                 reg = <1>;
              } ;
       };

};

 

.......

&gem0 {
    local-mac-address = [00 0a 35 00 00 00];
    phy-mode = "rgmii-id";
    status = "okay";
    xlnx,ptp-enet-clock = <0x69f6bcb>;
    phy-handle = <&phy0>;
};
&gem1 {
    local-mac-address = [00 0a 35 00 00 01];
    phy-mode = "rgmii-id";
    status = "okay";
    xlnx,ptp-enet-clock = <0x69f6bcb>;
    phy-handle = <&phy1>;
};

View solution in original post

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Highlighted
Moderator
Moderator
1,317 Views
Registered: ‎09-12-2007

There is a patch to support multiple PHY on the one MDIO:

https://www.xilinx.com/support/answers/69132.html

 

So, your DT would look like (system-user.dtsi)

mdio {
         compatible = "cdns,macb-mdio";
         reg = <0xe000b000 0x1000>;
         clocks = <&clkc 30>, <&clkc 30>, <&clkc 13>;
         clock-names = "pclk", "hclk", "tx_clk";
         #address-cells = <1>;
         #size-cells = <0>;
         phy0: phy@0 {
              compatible = "marvell";
              device_type = "ethernet-phy";
              reg = <0>;
        } ;
            phy1: phy@1 {
                 compatible = "marvell";
                 device_type = "ethernet-phy";
                 reg = <1>;
              } ;
       };

};

 

.......

&gem0 {
    local-mac-address = [00 0a 35 00 00 00];
    phy-mode = "rgmii-id";
    status = "okay";
    xlnx,ptp-enet-clock = <0x69f6bcb>;
    phy-handle = <&phy0>;
};
&gem1 {
    local-mac-address = [00 0a 35 00 00 01];
    phy-mode = "rgmii-id";
    status = "okay";
    xlnx,ptp-enet-clock = <0x69f6bcb>;
    phy-handle = <&phy1>;
};

View solution in original post

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Adventurer
Adventurer
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Registered: ‎02-09-2017
when I use ifconfig -a ,I can see the other eth.
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