Hi All, On Fri, 22 Feb 2019 at 01:05, Simon Huelck <simonm...@gmx.de> wrote: > > Am 21.02.2019 um 18:46 schrieb Jerome Brunet: > > On Thu, 2019-02-21 at 18:27 +0100, Simon Huelck wrote: > >> Hi, > >> > >> > >> > >> this was changed recently, with a patch for the EEE stuff , see here: > >> > >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.0-rc7&id=e35e26b26e955c53e61c154ba26b9bb15da6b858 > > Hu, I was not aware this finally went through. Good ! > > As explained in the patch and by Jose, the GMAC should be using IRQ_LEVEL. > > > > The realtek PHY has EEE enabled by default. Having this enabled generates a > > lot of (Low Power) Interrupts. > > > > Previously, when the GMAC used IRQ_EDGE. Because it is wrong, we would > > eventually miss an IRQ and the interface would just die. Unfortunately, it > > was > > not that easy find out. > > > > 2 years ago, we just noticed that disabling EEE would make the failure go > > away. Forcing this EEE feature off through DT was merely a work around. > > > > Now that the real cause of the problem is known, there is no reason to keep > > this hack around. > > > > Whether EEE adds a performance penality and why, is another topic. > > As Jose pointed out, you can disable EEE at runtime, using ethtool. > > > > Jerome > > > Hi, > > > > i disabled EEE via ethtool and via the .dtb , but the performance > penalty stays. Kernel 4.14 still gives me the former "good" performance. > > > > regards, > > Simon > > Sorry this is off the topic.
I am using Archlinux on Odroid C1+ and the latest kernel loads with no issue. only issue is I have is the each time their is random MAC address so I get new IP from dhcp server. How can I avoid this. I have tried to enable eFuse driver but with no success. On Odroid C2 I dont have any issue, it always retained the unique MAC address. Best Regards -Anand
