Galileo SoC via Python (or Linux Shell)

I am trying to read GPIO via python. The normal IO via Cypress controller is pretty slow -- about 3 ms poll time in Python.

I want to read the SoC versions of IO2 and IO3. This is the pinMode INPUT_FAST in Arduino. I am assuming this is using SoC IO.

I cannot read input on IO2 or IO3 when I put it in SoC mode, though I can via Cypress mode. Any Pointers?

Here's what I tried:

Steps to enable SoC mode for IO2:

1. Setup MUX control hardware so I/O goes to SoC

2. Setup GPIO14 for IO2

So from what I understand so far, I set the mode of the IO:

Init GPIO 31 as output and set low to select IO2 to use SoC

echo "31" >/sys/class/gpio/export

echo "out" >/sys/class/gpio/gpio31/direction

echo "0" > /sys/class/gpio/gpio31/value

cat /sys/class/gpio/gpio31/value  <--- 0, good.

Now set up GPIO 14 as input:

echo "14" >/sys/class/gpio/export

echo "in" >/sys/class/gpio/gpio14/direction

cat /sys/class/gpio/gpio14/value

This does not read changes on IO2. However I can toggle the pull up resistor and it DOES detect this change:

echo "0" >/sys/class/gpio/export

echo "out" >/sys/class/gpio/gpio0/direction

echo "0" >/sys/class/gpio/gpio0/value  <--- disables the pull up resistor

cat /sys/class/gpio/gpio14/value  <----- shows 0

echo "0" >/sys/class/gpio/gpio0/value  <--- enables the pull up resistor

cat /sys/class/gpio/gpio14/value  <----- shows 1

So the input is getting from the pull up resistor to processor. But not from IO2 to the processor.

however changing to Cypress

echo "1" > /sys/class/gpio/gpio31/value

now enabling the Cypress Input

echo "32" >/sys/class/gpio/export

echo "in" >/sys/class/gpio/gpio32/direction

cat /sys/class/gpio/gpio32/value

This responds correctly to changes in input value.

Am I missing something here?

I based my settings on information from Intel Galileo - Programming GPIO From Linux - Malinov Family Web Presence