Intel®︎ Cyclone®︎ V SoC: No network interface is recognized

[ruien612]

Hello everyone,

I have zepyhr running on the Cyclone V according to the following instructions: https://docs.nordicsemi.com/bundle/ncs-2.5.2/page/zephyr/boards/arm/cyclonev_socdk/doc/index.html
Next I wanted to establish a simple network communication. I use the already written Example of a DHCP client under the directory .../zephyrproject/zephyr/samples/net/dhcpv4_client but the following error message appears:

[00:00:00.207,000] <err> net_if: There is no network interface to work with!
*** Booting Zephyr OS build v4.0.0-3095-gd9eed167d06b ***
Run dhcpv4 client
[00:00:00.380,000] <wrn> net_if: No default interface found!
uart:~$ device list
devices:
- intc@fffed000 (READY)
  DT node labels: intc
- gpio@ff70a000 (READY)
  DT node labels: gpio2
- gpio@ff709000 (READY)
  DT node labels: gpio1
- gpio@ff708000 (READY)
  DT node labels: gpio0
- serial1@ffc03000 (READY)
  DT node labels: uart1
- serial0@ffc02000 (READY)
  DT node labels: uart0
- sysmgr@ffd08000 (READY)
  DT node labels: sysmgr

Normally, the Ethernet device should also be recognized (gmac0/gmac1) ...
I know that this example was not written explicitly for my hardware. I found the folder “Boards” in the project directory, which had a .conf file and an .overlay file, so I created two files cyclonev.conf & cyclonev.overlay. In the following I show my prj.conf and cyclonev.conf & cyclonev.overlay files:
prj.conf:

#No changes have been made
CONFIG_NETWORKING=y
CONFIG_NET_IPV6=n
CONFIG_NET_IPV4=y
CONFIG_NET_ARP=y
CONFIG_NET_UDP=y
CONFIG_NET_DHCPV4=y
CONFIG_NET_DHCPV4_OPTION_CALLBACKS=y
CONFIG_DNS_RESOLVER=y
CONFIG_TEST_RANDOM_GENERATOR=y
CONFIG_INIT_STACKS=y
CONFIG_NET_MGMT=y
CONFIG_NET_MGMT_EVENT=y
CONFIG_NET_LOG=y
CONFIG_LOG=y

cyclonev.conf:

CONFIG_ETH_CYCLONEV=y
CONFIG_NET_L2_ETHERNET=y
CONFIG_NET_MGMT=y
CONFIG_NET_DHCPV4=y
CONFIG_NET_TCP=y
CONFIG_NET_LOG=y
CONFIG_NET_IPV4=y

cyclonev.overlay:

&gmac1 {
    status = "okay";
    local-mac-address = [e6 88 2d 82 1f d4];
};
&gmac0 {
    status = "disabled"; 
};

I'll show you an excerpt from my zepyhr.dts file:

gmac0: ethernet@ff700000 {
		compatible = "snps,ethernet-cyclonev";
		reg = < 0xff700000 0x2000 >;
		interrupts = < 0x0 0x73 0x4 0xa0 >;
		emac-index = < 0x0 >;
		status = "disabled";
	};
gmac1: ethernet@ff702000 {
	compatible = "snps,ethernet-cyclonev";
	reg = < 0xff702000 0x2000 >;
	interrupts = < 0x0 0x78 0x4 0xa0 >;
	emac-index = < 0x1 >;
	status = "okay";
	local-mac-address = [ E6 88 2D 82 1F D4 ];
};

I have tried a lot of other things. For example I tried to enable gmac1 and disable gmac0 or disable both but without success. I had seen the approach with the own .conf and the .overlay file several times (e.g. for a STM32). So I think my approach is correct, but no network interface is recognized (Ethernent). I hope that someone sees my mistake and can help me. I would be very grateful for that. Finally, I'll insert a small screenshot from the documentation showing which Ethernet interface I'm using:

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Even though I'm a bot, I can assure you that the whole community is genuinely grateful for your time and effort. 🤖💙

[jukkar]

@ruien612 just to verify this. You are referring to instructions in NCS, are you running NCS too or are you using upstream Zephyr with your cyclone board?

[jukkar]

Note that you should not set CONFIG_ETH_CYCLONEV=y manually as it will be automatically selected when your DTS is correct. The config option depends on DT_HAS_SNPS_ETHERNET_CYCLONEV_ENABLED symbol.
You could for example see if CONFIG_DT_HAS_SNPS_ETHERNET_CYCLONEV_ENABLED is set in
build/zephyr/include/generated/zephyr/autoconf.h file. If it is, then the DT is ok and your issues are somewhere else. If it is not found in the autoconf.h file, then your DTS overlay is not set/read properly.

[ruien612]

Thanks for your answers @jukkar
--> I installed Zepyhr on my Windows 10 machine according to the following instructions: https://docs.zephyrproject.org/latest/develop/getting_started/index.html
So I am using upstream Zephyr. I then continued with the following instructions to flash a Hello-World example to the Cyclone: https://docs.nordicsemi.com/bundle/ncs-2.5.2/page/zephyr/boards/arm/cyclonev_socdk/doc/index.html

--> Okay thanks for the hint, I will take CONFIG_ETH_CYCLONEV=y out of my cyclone.conf file. In my build/zephyr/include/generated/zephyr/autoconf.h file the option CONFIG_DT_HAS_SNPS_ETHERNET_CYCLONEV_ENABLED is found and this is set. Are the remaining configurations from my prj.conf, cyclonev.conf and cyclonev.overlay file then correct?
Even if I remove from my cyclone.conf file, I still get the same error that no network interface is recognized: <err> net_if: There is no network interface to work with!
Even when I run device list neither gmac0 nor gmac1 appears...
Do you have any ideas what the problem could be?

I show you my zephyr.dts - if it helps..

/dts-v1/;

/memreserve/ 0x0000000000000000 0x0000000000001000;

/ {
	#address-cells = < 0x1 >;
	#size-cells = < 0x1 >;
	model = "Altera SOCFPGA Cyclone V SoC Development Kit";
	compatible = "altr,socfpga-cyclonev-socdk", "altr,socfpga-cyclonev", "altr,socfpga";
	aliases {
		serial0 = &uart0;
		serial1 = &uart1;
		eth0 = &gmac1;
		usb = &usb1;
		led0 = &hps0;
		led1 = &hps1;
		led2 = &hps2;
		led3 = &hps3;
		eeprom-0 = &eeprom;
	};
	cpus {
		#address-cells = < 0x1 >;
		#size-cells = < 0x0 >;
		cpu0: cpu@0 {
			compatible = "arm,cortex-a9";
			device_type = "cpu";
			reg = < 0x0 >;
		};
		cpu1: cpu@1 {
			compatible = "arm,cortex-a9";
			device_type = "cpu";
			reg = < 0x1 >;
		};
	};
	intc: intc@fffed000 {
		compatible = "arm,gic-v1", "arm,gic";
		#interrupt-cells = < 0x4 >;
		interrupt-controller;
		reg = < 0xfffed000 0x1000 >, < 0xfffec100 0x100 >;
		phandle = < 0x1 >;
	};
	soc {
		#address-cells = < 0x1 >;
		#size-cells = < 0x1 >;
		compatible = "simple-bus";
		device_type = "soc";
		interrupt-parent = < &intc >;
		ranges;
		L2: l2-cache@fffef000 {
			compatible = "arm,pl330-cache";
			reg = < 0xfffef000 0x1000 >;
			interrupts = < 0x0 0x26 0x4 0xa0 >;
			status = "okay";
		};
		clkmgr@ffd04000 {
			compatible = "altr,clk-mgr";
			reg = < 0xffd04000 0x1000 >;
			clocks {
				osc1: osc1 {
					#clock-cells = < 0x0 >;
					compatible = "fixed-clock";
					clock-frequency = < 0x17d7840 >;
					phandle = < 0x2 >;
				};
				osc2: osc2 {
					#clock-cells = < 0x0 >;
					compatible = "fixed-clock";
					clock-frequency = < 0x17d7840 >;
				};
				f2s_periph_ref_clk: f2s_periph_ref_clk {
					#clock-cells = < 0x0 >;
					compatible = "fixed-clock";
					clock-frequency = < 0x2faf080 >;
				};
				f2s_sdram_ref_clk: f2s_sdram_ref_clk {
					#clock-cells = < 0x0 >;
					compatible = "fixed-clock";
					clock-frequency = < 0x5f5e100 >;
				};
			};
		};
		sysmgr: sysmgr@ffd08000 {
			compatible = "altr,sys-mgr", "syscon";
			reg = < 0xffd08000 0x4000 >;
			status = "okay";
		};
		ocram: sram@ffff0000 {
			compatible = "zephyr,memory-region", "mmio-sram";
			reg = < 0xffff0000 0x10000 >;
			zephyr,memory-region = "OCRAM";
		};
		arch_timer: timer@fffec200 {
			compatible = "arm,armv8-timer";
			status = "okay";
			interrupt-names = "irq_0", "irq_1", "irq_2", "irq_3";
			interrupts = < 0x1 0xd 0x4 0xa0 >, < 0x1 0xe 0x4 0xa0 >, < 0x1 0xb 0x4 0xa0 >, < 0x1 0xa 0x4 0xa0 >;
			reg = < 0xfffec200 0x1c >;
			clocks = < &osc1 >;
		};
		uart0: serial0@ffc02000 {
			compatible = "ns16550", "snps,dw-apb-uart";
			reg = < 0xffc02000 0x1000 >;
			interrupts = < 0x0 0xa2 0x4 0xa0 >;
			reg-shift = < 0x2 >;
			clock-frequency = < 0x5f5e100 >;
			dma-names = "tx", "rx";
		};
		uart1: serial1@ffc03000 {
			compatible = "ns16550", "snps,dw-apb-uart";
			reg = < 0xffc03000 0x1000 >;
			interrupts = < 0x0 0xa3 0x4 0xa0 >;
			reg-shift = < 0x2 >;
			clock-frequency = < 0x5f5e100 >;
			dma-names = "tx", "rx";
		};
		gmac0: ethernet@ff700000 {
			compatible = "snps,ethernet-cyclonev";
			reg = < 0xff700000 0x2000 >;
			interrupts = < 0x0 0x73 0x4 0xa0 >;
			emac-index = < 0x0 >;
			status = "disabled";
		};
		gmac1: ethernet@ff702000 {
			compatible = "snps,ethernet-cyclonev";
			reg = < 0xff702000 0x2000 >;
			interrupts = < 0x0 0x78 0x4 0xa0 >;
			emac-index = < 0x1 >;
			status = "okay";
			local-mac-address = [ E6 88 2D 82 1F D4 ];
			phy-mode = "rgmii-id";
		};
		gpio0: gpio@ff708000 {
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			compatible = "snps,designware-gpio";
			reg = < 0xff708000 0x1000 >;
			interrupts = < 0x0 0xa4 0x4 0xa0 >;
			status = "okay";
			ngpios = < 0x1d >;
			gpio-controller;
			#gpio-cells = < 0x2 >;
		};
		gpio1: gpio@ff709000 {
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			compatible = "snps,designware-gpio";
			reg = < 0xff709000 0x1000 >;
			interrupts = < 0x0 0xa5 0x4 0xa0 >;
			status = "okay";
			ngpios = < 0x1d >;
			gpio-controller;
			#gpio-cells = < 0x2 >;
			phandle = < 0x3 >;
		};
		gpio2: gpio@ff70a000 {
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			compatible = "snps,designware-gpio";
			reg = < 0xff70a000 0x1000 >;
			interrupts = < 0x0 0xa6 0x4 0xa0 >;
			status = "okay";
			ngpios = < 0x1b >;
			gpio-controller;
			#gpio-cells = < 0x2 >;
		};
		i2c0: i2c@ffc04000 {
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			compatible = "snps,designware-i2c";
			reg = < 0xffc04000 0x1000 >;
			clock-frequency = < 0x186a0 >;
			interrupts = < 0x0 0x9e 0x4 0xa0 >;
			interrupt-parent = < &intc >;
			status = "okay";
			eeprom: eeprom@51 {
				compatible = "microchip,at24lc32a", "atmel,at24";
				status = "okay";
				reg = < 0x51 >;
				size = < 0x1000 >;
				address-width = < 0x8 >;
				timeout = < 0x19 >;
				pagesize = < 0x20 >;
			};
			ds3231: rtc@68 {
				compatible = "maxim,ds3231";
				reg = < 0x68 >;
			};
		};
		i2c1: i2c@ffc05000 {
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			compatible = "snps,designware-i2c";
			reg = < 0xffc05000 0x1000 >;
			interrupts = < 0x0 0x9f 0x4 0xa0 >;
			status = "disabled";
		};
		i2c2: i2c@ffc06000 {
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			compatible = "snps,designware-i2c";
			reg = < 0xffc06000 0x1000 >;
			interrupts = < 0x0 0xa0 0x4 0xa0 >;
			status = "disabled";
		};
		i2c3: i2c@ffc07000 {
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			compatible = "snps,designware-i2c";
			reg = < 0xffc07000 0x1000 >;
			interrupts = < 0x0 0xa1 0x4 0xa0 >;
			status = "disabled";
		};
		usb0: usb@ffb30000 {
			compatible = "snps,dwc2";
			reg = < 0xffb30000 0xffff >;
			interrupts = < 0x0 0x7f 0x4 0xa0 >;
			interrupt-parent = < &intc >;
			num-out-eps = < 0x10 >;
			num-in-eps = < 0x10 >;
			ghwcfg1 = < 0x0 >;
			ghwcfg2 = < 0x208ffc90 >;
			ghwcfg4 = < 0xfe0f0020 >;
			status = "disabled";
		};
		usb1: zephyr_udc0: usb@ffb40000 {
			compatible = "snps,dwc2";
			reg = < 0xffb40000 0xffff >;
			interrupts = < 0x0 0x80 0x4 0xa0 >;
			interrupt-parent = < &intc >;
			num-out-eps = < 0x10 >;
			num-in-eps = < 0x10 >;
			ghwcfg1 = < 0x0 >;
			ghwcfg2 = < 0x208ffc90 >;
			ghwcfg4 = < 0xfe0f0020 >;
			status = "okay";
		};
		spi0: spi@fff00000 {
			compatible = "snps,designware-spi";
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			reg = < 0xfff00000 0x1000 >;
			fifo-depth = < 0x100 >;
			max-xfer-size = < 0x20 >;
			interrupts = < 0x0 0x9a 0x4 0xa0 >;
			clock-frequency = < 0xbebc200 >;
			status = "okay";
		};
		spi1: spi@fff01000 {
			compatible = "snps,designware-spi";
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			reg = < 0xfff01000 0x1000 >;
			fifo-depth = < 0x100 >;
			max-xfer-size = < 0x20 >;
			interrupts = < 0x0 0x9b 0x4 0xa0 >;
			clock-frequency = < 0xbebc200 >;
			status = "disabled";
		};
	};
	ddr0: memory@0 {
		name = "memory";
		device_type = "memory";
		reg = < 0x0 0x40000000 >;
	};
	leds {
		compatible = "gpio-leds";
		hps3: hps_led_3 {
			gpios = < &gpio1 0xc 0x1 >;
		};
		hps2: hps_led_2 {
			gpios = < &gpio1 0xd 0x1 >;
		};
		hps1: hps_led_1 {
			gpios = < &gpio1 0xe 0x1 >;
		};
		hps0: hps_led_0 {
			gpios = < &gpio1 0xf 0x1 >;
		};
	};
	chosen {
		zephyr,sram = &ddr0;
		zephyr,console = &uart0;
		zephyr,shell-uart = &uart0;
		zephyr,ocm = &ocram;
	};
};

[fabiobaltieri]

		gmac0: ethernet@ff700000 {
			compatible = "snps,ethernet-cyclonev";
			reg = < 0xff700000 0x2000 >;
			interrupts = < 0x0 0x73 0x4 0xa0 >;
			emac-index = < 0x0 >;
			status = "disabled";
		};
		gmac1: ethernet@ff702000 {
			compatible = "snps,ethernet-cyclonev";
			reg = < 0xff702000 0x2000 >;
			interrupts = < 0x0 0x78 0x4 0xa0 >;
			emac-index = < 0x1 >;
			status = "okay";
			local-mac-address = [ E6 88 2D 82 1F D4 ];
			phy-mode = "rgmii-id";
		};

your override is not working, anyway converting this to discussion, you can also ask for help on http://chat.zephyrproject.org/ if it works better for you

[ruien612]

Another Input: in ...\zephyrproject\zephyr\drivers\ethernet\eth_cyclonev.c there is the following content:

Driver specifically designed for Cyclone V SoC DevKit use only.*
based on Intel SOC FPGA HWLIB Repo
https://github.com/altera-opensource/intel-socfpga-hwlib

And in the git-repo there is the folling Table:

Therefore i got errors, that the "properties" phy-mode isn't define, so have to do the following:
--> in ...\zephyrproject\zephyr\dts\bindings\ethernet\snps,ethernet-cyclonev.yaml
--> i had to add the property phy-mode myself
--> so what is the message that the devoloper of this code wanna say me? I dont need an overlay-file? or i dont need to mention phy-mode and mdio? But it doesn't work eithter...

Maybe zephyr doesen't support Internet/Ethernet Connecetion with this board. The necessary files are there, but not all of them i think. For Example, the following files exist:
--> ...\zephyrproject\zephyr\drivers\ethernet\eth_cyclonev.c
--> ...\zephyrproject\zephyr\drivers\ethernet\eth_cyclonev_priv.h
--> ...\zephyrproject\zephyr\drivers\ethernet\phy_cyclonev.c
--> ...\zephyrproject\zephyr\drivers\ethernet\Kconfig.cyclonev
For me that a very good sign, that it has to be possible, but as you have mentioned, we need MDIO, but if i try to implement your suggest, then i get a lot of warinings and errors and one of them is very interesting:

CMake Warning at C:/Users/kir/zephyrproject/zephyr/CMakeLists.txt:1002 (message):
No SOURCES given to Zephyr library: drivers__mdio

If i look in the following directory: C:\Users\kir\zephyrproject\zephyr\drivers\mdio
--> then there are a lot of files for example for esp32, stm32, ... but i cant find something for cyclonev....

What i should do? Is this a sign that i do not need to mention mdio in the overlay-file? I am a little bit lost