H3 GMAC

mihaly4 · Published in 2015-5-25 16:06:37

HI all,
I am trying to compile kernel from H3 Linux SDK for Orange Pi Plus with .config file for Lubuntu http://www.orangepi.online/orangepi ... 20&fromuid=7773
But I can not get working ethernet.
Here is dmesg:
[root@orangepi-plus ~]# ifconfig eth0 up
[ 36.401849] gmac0: probed
[ 36.404855] gmac0 gmac0: eth0: eth0: PHY ID 00000000 at 0 IRQ poll (gmac0-0:00)
[ 36.423174] gmac0 gmac0: eth0: Initialize hardware error

Looks like PHY is not detected. Correct PHY ID should be 001cc915.
Original kernel from Lubuntu distribution for Orange Pi Plus works OK, so hardware is working correctly.
Can anyone tell me what am I missing?

fritz · Published in 2015-5-26 01:13:13

probably it will need a kernel patch.

mihaly4 · Published in 2015-5-26 13:47:01

I would like to check pin configuration for gmac, but I don't see any sys_config.fex , script.bin, boot.scr or any other board configuration file. Is it hardcoded somewhere in kernel sources?

fritz · Published in 2015-5-26 21:04:31

Has nothing to doo with pin configuration.
try it on the lubuntu distro, change only the kernel and leave the rest at it is.

mihaly4 · Published in 2015-5-26 21:38:33

Edited by mihaly4 at 2015-5-27 00:53

That's what i initially did. I only changed kernel.

Also I dumped gmac configuration from /sys/class/script/dump and it seems valid. But i noticed that LEDs are not flashing when I plug the ethernet cable. Looks like phy is powered off, and I did not found any usage of gmac_phy_power_en pin in kernel source, however it is assigned in configuration:
gmac_phy_power_en gpio (gpio: 0x66 / PD6, mul: 1, pull -1, drv -1, data 0)

I found a patch in BananaPi kernel, that makes use of gmac_phy_power_en. I will try to modify H3 gmac source in similar way.

fritz · Published in 2015-5-27 04:19:58

mihaly4 replied at 2015-5-26 14:38
That's what i initially did. I only changed kernel.

Also I dumped gmac configuration from /sys/clas ...

Maybe you are right!

I have tried my self compiled kernel on another H3-device that use a internal PHY and ethernet works!!
so for user that have opi2 or opi2-mini ethernet should work with self compiled SDK-kernel
@mihaly4 GO ON!
If we wait for @steven or @allwinner releasing some usefull code or documentation we need to wait many, many, many, many, many, many, many, many, many, many, many, many, many, many, many, many, many, many...................... Days!!!

mihaly4 · Published in 2015-5-27 14:17:39

fritz replied at 2015-5-27 04:19
Maybe you are right!

I have tried my self compiled kernel on another H3-device that use a inter ...

Yay! I managed to get working ethernet! I was correct, Orange Pi Plus have PHY power circuit, controlled from gpio. I modified sunxi_geth.c file. Now it sets gmac_phy_power_en to 1.

fritz · Published in 2015-5-27 19:36:50

Yeah!

Can you post a patch?

nickludlam · Published in 2015-5-27 19:43:18

Also can you see if your process is different from the one documented on the linux-sunxi site? https://linux-sunxi.org/H3_Manual_build_howto

mihaly4 · Published in 2015-5-27 20:38:08

fritz replied at 2015-5-27 19:36
Yeah!

Here is quick and dirty patch

H3 GMAC

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