I am using kernel 4.9 built from https://github.com/megous/linux and tried DTB plus/plus2E in a custom distro ,But the ethernet isn't working.

ifconfig: SIOCGIFFLAGS: No such device
ifconfig: SIOCSIFADDR: No such device
route: SIOCADDRT: Network is unreachable

What could be the reason?

Keep in mind, that 4.9 is till in work-in-progress state.

My OpiPC runs on megous' 4.7 kernel for some time now and the ethernet works fine.

The last time I tried 4.9, it doesn't even booted, but it was back around rc2.

In the meantime, he also updated/switched the ethernet driver to montjoie's one, which is also a "wip" source tree.

 

As you can see, a lot of "work-in-progress" code is present in the currently available 4.9 kernels, so some breakage can be expected.

 

I'll test the 4.9 kernel once Linus decides it is stable enough and after the sunxi guys do their magic to patch it for my Opi.

I'm running 4.9.x on my OPiPlus2E since more than a month, and it is working properly.

@martinayotte: from whose source if I may ask?

megous' 4.9 branch or montjoie's sun8i-emac-wip-v5?

My image of last month was using montjoie's sun8i-emac-wip-v5, but few days ago, I've upgraded the kernel+modules (without redoing full image) using orange-pi-4.9 from megous, I didn't faced any issues.

 

BTW, I've almost forgot to mention, I'm using the built-in WiFi of OPiPlus2E, not the EMAC. Maybe I should try it and report here...

 

EDIT : Effectively, I have problem with orange-pi-4.9, and fortunately I always keep old image for a while, and I've tried sun8i-emac-wip-v5 from last month, it is working fine.

I will probably revert my eMMC setup back to sun8i-emac-wip-v5.

 

EDIT2 : Interestingly, I've just verified one of my OPiPC+ which was updated the same day with orange-pi-4.9 too, and EMAC seems to work fine.

(I will have to rebuild a new image for OPiPlus2E to see if it still fail.)

Could this issue be a problem in the distro and the kernel?
How do i troubleshoot this?

And when compiling kernel , how do i configure it?

Do i use defconfig ?

I tried:

1) montjoie's using make defconfig,then make zImage ,dtbs 

2) megous same way as above

3) armbian kernel

 

and every dtbs for plus2E or plus

 

None worked,all same issue as above.

As I said, the build I've done a month ago, Oct 27th to be exact, worked, but not the newer one.

We need to figure out which bug has been introduced to be able to fix it.

Until we found it, the only way you can get networking is to use the built-in WiFi of the OPiPlus2E.

 

EDIT : For those who wish to get my kernel from Oct 27th :

 

http://www.megafileupload.com/83l9/orangepiplus2e-20161027.tgz

With your kernel and dtb and lib/modules the ethernet led lights up

 IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

The distro uses ethernet by:

ifconfig eth0 down
ifconfig eth0 add 192.168.1.30 up
route add default gw 192.168.1.1
echo nameserver 192.168.1.1 >> /etc/resolv.conf

What could be wrong?

We need to figure out which bug has been introduced to be able to fix it.

Until we found it, the only way you can get networking is to use the built-in WiFi of the OPiPlus2E.

 

 

Huh? https://forum.armbian.com/index.php/topic/2966-opi2e-mainline-ethernet-not-working-any-more/?p=20438

 

This works. And since no one takes the time to compare DT stuff and to send a patch as PR this will remain as it is now.

Oh ! Thanks, @TKaiser !

This potentially gave me a clue here : it seems that PD6/EMAC-PWR-EN is used in Plus2E, but not on PCPlus, therefore no power apply if we don't add it to DT.

 

EDIT : Fix done and committed ...

 

EDIT2 : For those who are interested, http://www.megafileupload.com/cg8v/orangepiplus2e-20161209.tgz

Looks like 4.9 doesnt boot on Pi PC, downloaded this nightly image - http://image.armbian.com/betaimages/Armbian_5.24.161212_Orangepipc_Ubuntu_xenial_4.9.0.7zEthernet green led is blinking and red on board - 2 blinks each second.

 

Ok, weird, now it booted, but looks like ethernet isnt working - green led on port blinking