hardware hack Adding enc28j60 ethernet on orange pi pc

[Cache]

Hello,

 

I am trying to connect an enc28j60 ethernet port to spi0.0 on an orange pi pc, running armbian (debian stretch 4.19.5).

 

I have the jumpers all connected in what I believe is the correct pattern. I compiled a device tree (overlay?) for the enc28j60 on h3, the dtbo file now exists in /boot/overlay-user/spi-enc28j60.dtbo.

/dts-v1/;
/plugin/;

/ {
	compatible = "allwinner,sun4i-a10", "allwinner,sun7i-a20", "allwinner,sun8i-h3", "allwinner,sun50i-a64", "allwinner,sun50i-h5";

	/* This fragment is required only if the IRQ pin requires internal pull-up */
	fragment@0 {
		target = <&pio>;
		__overlay__ {
			enc28j60_pins: enc28j60_pins {
				pins = "PA7";
				function = "irq";
				bias-pull-up;
			};
		};
	};

	fragment@1 {
		target = <&spi0>;
		__overlay__ {
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";
			enc28j60 {
	                        compatible = "microchip,enc28j60";
	                        reg = <0>;
	                        interrupt-parent = <&pio>;
	                        interrupts = <0 7 2>; /* PA7 IRQ_TYPE_EDGE_FALLING */
	                        spi-max-frequency = <12000000>;
	                        status = "okay";
	                        /* These are required only if internal pull-up is used for the IRQ pin */
				pinctrl-names = "default";
	                        pinctrl-0 = <&enc28j60_pins>;
			};
		};
	};
};

and I configured the /boot/armbianEnv.txt. (I just recently added spi-jedec-nor/spi-add-cs1 just for the hell of it to test).

verbosity=1
logo=disabled
console=both
disp_mode=1920x1080p60
overlay_prefix=sun8i-h3
rootdev=UUID=1b49372a-ea5b-42f6-9e60-036606066891
rootfstype=ext4
overlays=spi-add-cs1 spi-jedec-nor spi-spidev
param_spidev_spi_bus=0
usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u

But the device still does not come up. I get a dmesg of "spidev spi0.0: probing from DT" and no errors anymore. And I configured the /etc/hosts/interfaces file, but ip a just shows an "unknown" state instead of up or down.

 

All the tutorials (for raspberry pi's on raspbian... seriously only 2 people have ever tried this on orange pi/armbian?) I can find only show these few steps. And I can't even think of how to go about troubleshooting this. I am kind of new though so maybe I am missing something. What else should I try?

[martinayotte]

2 hours ago, Cache said:

maybe I am missing something

You seems that have missed that overlays placed in /boot/overlay-user/ folder still need to be declared in /boot/armbianEnv.txt using variable "user_overlays=spi-enc28j60" .

[Cache]

13 hours ago, martinayotte said:

You seems that have missed that overlays placed in /boot/overlay-user/ folder still need to be declared in /boot/armbianEnv.txt using variable "user_overlays=spi-enc28j60" .

I corrected that and now eth1 shows as an interface. Thank you!

 

[Cache]

Only now the interface state won't come up. Ifup stalls out on dhcp requests, and I can't see any traffic coming from the nic. 

[martinayotte]

4 hours ago, Cache said:

Only now the interface state won't come up. Ifup stalls out on dhcp requests, and I can't see any traffic coming from the nic.

What "dmesg | grep eth" is reporting ?

[TonyMac32]

On 7/9/2019 at 1:15 PM, Cache said:

have the jumpers all connected in what I believe is the correct pattern

Verify this, it might be one of the pins is wrong.  What eth board are you using?

[Cache]

On 7/10/2019 at 7:02 AM, martinayotte said:

What "dmesg | grep eth" is reporting ?

 

enc28j60 spi0.0: enc28j60 Ethernet driver 1.02 loaded
net eth1: link up - Half duplex
net eth1: enc28j60 driver registered
net eth1: link up - Half duplex
net eth1: link up - Half duplex
net eth1: link up - Half duplex
net eth1: link up - Half duplex
net eth1: link up - Half duplex
net eth1: link up - Half duplex
net eth1: link up - Half duplex
net eth1: link up - Half duplex
net eth1: link up - Half duplex
net eth1: link up - Half duplex
net eth1: link up - Half duplex
net eth1: link up - Half duplex
net eth1: link up - Half duplex
IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready

There's about a hundred "link up - half duplex" messeges, I truncated for sanity. 

dmesg | grep -i spi:

Quote

enc28j60 Ethernet driver 1.02 loaded

dmesg | grep -i spi was outputing something about a chipselect 0 already in use error, I removed sun8i-h3-spi-spidev.dtbo from the /boot/dtb/ directory and that seems to have solved it. But I am not sure I fully understand what it the error was other than possibly two modules fighting over the same spi pins. But I could be way off, the pins are correct as far as I can tell, but someone was saying that one of them (the cs?) is often misconfigured to be used on other pins. Hopefully that issue is solved, although I wasn't getting those errors before, not sure why they suddenly popped up.

 

On 7/12/2019 at 8:56 PM, TonyMac32 said:

Verify this, it might be one of the pins is wrong.  What eth board are you using?

This. But the ethernet port itself reads 18/20.
It's an enc28j60, not sure what the board it's on is called. But as far as I understand they are pretty generic and (used to be) commonly used. According to the diagrams I found online everything matches (triple checked!).

Orange Pi's Pinout <--- previous link broke?
Can't find an official diagram but follows this pinout

 

-- I plugged up the ethernet port to a laptop and listening wireshark I can't see any traffic when pinging or making dhcp requests. Ifup just ends in no dhcp offers received, and a static address can't reach anything when plugged up to a switch. Should I assume this is a board/armbian configuration issue or could it just be a networking problem? 

 

Edited July 18, 2019 by Cache
fixing link

[Cache]

I don't know if it's helpful but I also still show a dummy0 as an interface.  From what I can tell it's not useful but is related to a (kernel) module that runs at startup.

[TonyMac32]

I have one of the GEEEKPi hats, was using it with my ESP32 board, same thing different shape.  What I don't have are any OPi's laying around, but I have some other H2/3/5 boards.  It should support full duplex, shouldn't it?  maybe it's resetting over and over for some reason.

[Cache]

It doesn't let me set it to full duplex, gives me a not supported error. And I can't configure the network but I believe the switch is set to auto-negotiate.

But my current idea is that the spi pins need to be configured differently. It's currently set to 'pins = "PA7"'. And from what I understand this may need to be changed. Not entirely sure though.

Edited July 18, 2019 by Cache