Hi
According to the datasheet, it’s the 26 pin that’s connected to the Unif. Display Port and not the 28.
Have a look at ‘Figure 5: nRESET_OUT circuit’ in the datasheet. gpio28 corresponds to the ‘ENET_TX_EN’ ball.
What’s the relation of RESET_MICO# to RESET_MOCI_EDT#
On the Ixora there is a 0 Ohm resistor between these two nets. Have a look at the schematic.
So, now that we now the cause of your issue you could either:
- remove R82 from your Ixora
- change apalis_imx6.c so that the ball ‘ENET_TX_EN’ is muxed as GPIO and set to ouput ‘0’
Note that we don’t release RESET_MOCI in U-Boot because during boot we need to pull it low again when initalizing PCIe. If you release it, it will go to 0 for 100ms during boot when the PCIe driver is initalized to meet timing restrictions of the PCIe switch on the Apalis Evaluation Board. I do not expect any adverse effects though.
Max