On Thu, Aug 7, 2014 at 9:12 AM, Russell King - ARM Linux
<li...@arm.linux.org.uk> wrote:
> 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.
> 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?
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
and the GPIO1_6 interrupt comes from this commit:
commit bc20a5d6da718f9d60da0a78f70c653c1cd16af3
Author: Troy Kisky <troy.ki...@boundarydevices.com>
Date: Fri Dec 20 11:47:12 2013 -0700
ARM: dts: imx6qdl-sabreauto: use GPIO_6 for FEC interrupt.
This works around a hardware bug.
Signed-off-by: Troy Kisky <troy.ki...@boundarydevices.com>
Signed-off-by: Shawn Guo <shawn....@linaro.org>
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