Hi Peppe, Am 15.03.2016 um 16:53 schrieb Giuseppe CAVALLARO: > On 3/15/2016 1:54 AM, Andreas Färber wrote: >> The connectivity issue still remains. Kernel log snippet: >> >> [ +0.001117] rk_gmac-dwmac ff290000.ethernet: Looking up phy-supply >> from device tree >> [ +0.000028] rk808 0-001b: Looking up vcc12-supply from device tree >> [ +0.000014] vcc_lan: supplied by vcc_io >> [ +0.000101] rk_gmac-dwmac ff290000.ethernet: clock input or output? >> (input). >> [ +0.000009] rk_gmac-dwmac ff290000.ethernet: TX delay(0x30). >> [ +0.000008] rk_gmac-dwmac ff290000.ethernet: RX delay(0x10). >> [ +0.000014] rk_gmac-dwmac ff290000.ethernet: init for RGMII >> [ +0.000104] rk_gmac-dwmac ff290000.ethernet: clock input from PHY >> [ +0.005063] rk_gmac-dwmac ff290000.ethernet: no reset control found >> [ +0.000007] stmmac - user ID: 0x10, Synopsys ID: 0x35 >> [ +0.000002] Ring mode enabled >> [ +0.000006] DMA HW capability register supported >> [ +0.000000] Normal descriptors > > ^^^^^^^^^^^^^^^^^^ > >> [ +0.000003] RX Checksum Offload Engine supported (type 2) >> [ +0.000002] TX Checksum insertion supported >> [ +0.000002] Wake-Up On Lan supported >> [ +0.000053] Enable RX Mitigation via HW Watchdog Timer >> [ +0.000771] of_get_named_gpiod_flags: can't parse 'snps,reset-gpio' >> property of node '/ethernet@ff290000[0]' >> [ +0.004250] libphy: stmmac: probed >> [ +0.000009] eth0: PHY ID 001cc915 at 0 IRQ POLL (stmmac-0:00) active >> [ +0.000005] eth0: PHY ID 001cc915 at 1 IRQ POLL (stmmac-0:01) >> >> As before, reverting "stmmac: first frame prep at the end of xmit >> routine" fixes it. My test cases are `ping 192.168.1.1` and `zypper up`. > > so on your side, this revert fixes the issue and you do not see any > tx watchdog as Tomeu's raised.
Confirmed, the system ran stable over night. I don't use NFS on that system myself, having GMAC working only since v2. > I have fixed some problems on top of > "stmmac: first frame prep at the end of xmit ..." please > see patch attached for net-next. > > Indeed, the normal tx descriptors are well filled w/o > "stmmac: first frame prep at the end of xmit ..." > > I wonder if you could try the attachment in order to understand if we > have to actually revert the patch (I ask you to not revert the > patch "stmmac: first frame..."). Works great on top of next-20160314 with i2c plus this series, please add my Tested-by. Thanks a lot for investigating! Cheers, Andreas -- SUSE Linux GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany GF: Felix Imendörffer, Jane Smithard, Graham Norton; HRB 21284 (AG Nürnberg)
