Hi Tomeu On 3/14/2016 12:43 PM, Tomeu Vizoso wrote: > Hi Peppe, > > with that patch I don't see any difference at all in my setup. > > So to be clear, with these commits on top of next-20160314, I still > get the hang during boot: > > 209afef6f0cd ARM: dts: rockchip: Add mdio node to ethernet node > 2315acc6cf7f Revert "stmmac: first frame prep at the end of xmit routine" > b5e08e810c63 stmmac: fix tx prepare for normal desc > 37c15a31d850 i2c: immediately mark ourselves as registered > 4342eec3c5a2 Add linux-next specific files for 20160314 > > [ 27.521026] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:303 > dev_watchdog+0x284/0x288 > [ 27.529460] NETDEV WATCHDOG: eth0 (rk_gmac-dwmac): transmit queue 0 timed out I do not reproduce the WATCHDOG but i am continuing to look at the code to understand if normal descriptor management is ok or not. I keep you informed. Just an info, did you test with 2315acc6cf7f included? Just to understand if it is introducing a problem. It works in case of enhanced descriptors are used instead of. > > https://git.collabora.com/cgit/user/tomeu/linux.git/log/?h=broken-eth-on-rock2 thx I will take a look at this Regards Peppe