[meta-intel] Exporting 60 pin and set direction LOW for i2c data transfer(Gen 2 with 1.2 image SPI boot)

[Brendan Le Foll]

On Mon, Nov 09, 2015 at 11:44:34AM +0530, vamsi krishna gattupalli wrote:
>    Hi,
>    I am not able to set the direction to LOW after exporting 60 pin as per
>    emutex labs pin muxing for gen2.
>    I get this from message on console.
>    root at quark:/# echo 60 > /sys/class/gpio/export
>    root at quark:/# echo low > /sys/class/gpio/gpio60/direction
>    [  554.040170] intel_qrk_gip 0000:00:15.2: controller timed out
>    [  554.079512] intel_qrk_gip 0000:00:15.2: timeout in disabling adapter
>    [  554.086042] pca953x 0-0027: failed writing register
>    sh: write error: Connection timed out
>    Thanks & Regards,
>    Vamsi

I'm going to guess you're talking about the Intel galileo gen2 board?

This is probably not the right place for discussing this - but your
muxing is wrong (the muxing docs are pretty confusing to be fair),
what you want to do is the following:
https://github.com/intel-iot-devkit/mraa/blob/master/src/x86/intel_galileo_rev_g.c#L94

Although depending on the kernel/branch you're using that might work
better/worst. I'm not sure what '1.2' is referring to. If it's an
official Intel image from maker/intel.com I'd suggest asking on the
forum they have.

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Cheers,
Brendan