Mattis,

On Thu, Aug 7, 2014 at 11:20 AM, Fabio Estevam [off-list ref] wrote:

On Thu, Aug 7, 2014 at 9:12 AM, Russell King - ARM Linux
[off-list ref] wrote:

quoted

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

Same here on a mx6qsabresd.

quoted

In the DT file, we have:

                        fec: ethernet at 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?

On a imx6q sabreauto I also get:

151:          0          0          0          0       GIC 151  2188000.ethernet
166:       4577          0          0          0  gpio-mxc   6  2188000.ethernet

Could you remove 'interrupts-extended'  from the FEC node and also
MX6QDL_PAD_GPIO_6__ENET_IRQ from the pinctrl node and test again?