Hi Alexey, On Tue, Aug 16, 2016 at 06:06:20AM +0000, Alexey Brodkin wrote: > Hi Felix, > > On Wed, 2016-07-27 at 17:19 +0200, Felix Fietkau wrote: > > On 2016-07-27 14:11, Alexey Brodkin wrote: > > > > > > For some [still unknown] reason in ARC SDP boards > > > DW GMAC doesn't enter promiscuous mode if eth0 gets > > > added to the br-lan interface before Ethernet PHY finishes > > > autonegotiation (PHY gets reset on DW GMAC start). > > > > I think this is something we need to look at more closely instead of > > just papering over it in this way. By the way, arc* aren't the only ones > > using stmmac, ipq806x uses it as well and might be equally affected. > > Did you check if the network stack tells the driver to go into promisc > > mode? Or does the frame filtering registers simply get clobbered > > somewhere internally? > > > > Let's do some more testing and get this fixed properly... > > So I spent quite some time with that, short summary could be found here: > http://lists.infradead.org/pipermail/linux-snps-arc/2016-August/001395.html > > Probably most important summary for us here is: > ------------------------->8-------------------------- > Unfortunately I cannot figure out why GMAC behaves that way. > As per GMAC's databook the only reason for it to not react on a register > being written is missing input clock but there's no reason for the > clock to be missing and I don't seem to have a way to check if there's > a problem with clock or not. > ------------------------->8-------------------------- > > It worth trying on other boards with DW GMAC but the only other board > except ARC SDP ones is Cubieboard2 with sunxi-gmac (which is a kind of > DW GMAC as I may see from its Linux's driver) but on CB2 all works as > exected. If somebody wants to volunteer I'll be more than happy to work > with him/her trying to get more datapoints.
stmac/dwmac works as expected on Oxford/PLXTECH OX82x/NAS782x (oxnas target on OpenWrt/LEDE) as well. > > And I do think in the meantime it's good to apply this patch so people > get working Wireless AP without extra patching of sources or what's even > better with snapshot images. > > -Alexey > _______________________________________________ > Lede-dev mailing list > Lede-dev@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/lede-dev _______________________________________________ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev