Messages in this thread | | | Date | Thu, 7 Aug 2014 13:12:48 +0100 | From | Russell King - ARM Linux <> | Subject | Re: Oops: 17 SMP ARM (v3.16-rc2) |
| |
On Thu, Aug 07, 2014 at 11:11:06AM +0000, Mattis Lorentzon wrote: > Russell, > > > Can you ascertain whether these stalls are a result of some failure of the > > receive side or the transmit side - you should be able to tell that if you watch > > the packet counts via ifconfig on the stalled card. Also, it would be useful to > > know whether the FEC interrupt was firing. > > grep eth /proc/interrupts > 151: 0 0 0 0 GIC 151 2188000.ethernet > 166: 1205661 0 0 0 gpio-mxc 6 2188000.ethernet > > The interrupt counter 166 increases regularly during the stalls. > Ifconfig indicates that the RX and TX counters do not increase.
Hmm, I'm slightly confused. On my iMX6Q, I have:
150: 581754 0 0 0 GIC 150 2188000.ethernet 151: 0 0 0 0 GIC 151 2188000.ethernet
In the DT file, we have:
fec: ethernet@02188000 { compatible = "fsl,imx6q-fec"; reg = <0x02188000 0x4000>; interrupts-extended = <&intc 0 118 IRQ_TYPE_LEVEL_HIGH>, <&intc 0 119 IRQ_TYPE_LEVEL_HIGH>; clocks = <&clks 117>, <&clks 117>, <&clks 190>; clock-names = "ipg", "ahb", "ptp"; status = "disabled"; };
which, for the gic, would be 118 + 32 (first SPI) = 150, 119 + 32 = 151. Yet you seem to have nothing registered against GIC 150, instead having an interrupt against GPIO 6.
This seems very odd, and as this is an on-SoC device, I don't see why you would want to bind the interrupts for the FEC device any differently to standard platforms.
This could well be the cause of your stalls.
What's GPIO 6 used for on your board?
-- FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up according to speedtest.net.
| |