Hi! In BananaPi-M2 Ultra also the problem occurred when updating to the kernel. but I can't establish a connection El lunes, 19 de octubre de 2020 a las 1:14:46 UTC-3, Chen-Yu Tsai escribió:
> On Sat, Oct 17, 2020 at 3:08 AM Jernej Škrabec <jernej....@gmail.com> > wrote: > > > > Dne petek, 16. oktober 2020 ob 20:44:38 CEST je Marc Haber napisal(a): > > > Hi Jernej, > > > > > > On Thu, Oct 15, 2020 at 09:23:37PM +0200, Jernej Škrabec wrote: > > > > Dne četrtek, 15. oktober 2020 ob 21:11:39 CEST je Marc Haber > napisal(a): > > > > > when I boot my Banana Pi (with Debian buster installed) with > kernel 5.9, > > > > > the network interface doesn't work too well. Packet loss of more > than > > > > > 50 %, machine nearly unuseable. Going back to 5.8.13 fixes the > issue, > > > > > going forward to 5.9 again makes the issue reappear. > > > > > > > > > > Does anybody have a good guess what to try first before going the > > > > > "implant 5.8.13 stmmac driver to 5.9, maybe bisect" route? > > > > > > > > Try to revert > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/ > > > > linux.git/commit/?h=v5.9&id=bbc4d71d63549bcd003a430de18a72a742d8c91e > > > > > > > > This commit was found to cause issue on Beelink GS1 (Allwinner H6) > which > > > > has RTL8211e PHY. Since Banana Pi have same PHY, it might cause issue > > > > there too. > > > Reverting this commit does actually help here. Will there be a fix in > > > Greg's kernel releases? > > > > I have no clue. I don't have any problematic board, I just spotted > commit when > > rebasing my kernel and suggested as a possible reason. I suggest that you > > contact all people involved in that commit (including relevant mailing > lists) > > and explain the issue. Given that this commit is the fix, it's possible > that it > > just uncovered another issue. > > The proper fix now is to check the schematics, and change the phy-mode > property > to the correct type. It used to be that we used "rgmii" for all RGMII PHYs. > > Turns out there are four modes of RGMII, depending on whether the MAC or > PHY > enable TX / RX signal delays. > > Most boards in sunxi are designed so that the PHY is providing both TX and > RX > delays, which is done by pulling up the TXDLY and RXDLY pins at power up. > > The commit "net: phy: realtek: fix rtl8211e rx/tx delay config" fixes the > PHY > driver so that it will correctly "reconfigure" the PHY to the requested > mode. > Previously this was not happening due to incorrect register definitions. > > To summarize, the PHY driver fix exposes errors in our DTs. > > > Regards > ChenYu > -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/83697565-cbff-4198-8a9b-12d2a7fb133en%40googlegroups.com.
