Hi Jason,
If I well understood the adaptations you made on schematic, you only need to remove the control of I2C & SDIO switches mounted on mangOH Green board. This control is done in /etc/init.d/tiwifi script file
Thus, you need to comment lines controlling MangoH GPIO_Expander#1 SDIO_SEL (I/O_13) signal and GPIO_Expander#3 GPIO0_IOT0_RESET (I/O_4) signal during ti_wifi_start() & ti_wifi_stop() operations.
ti_wifi_start() {
…
# Enable all GPIOs on all EXPANDERs
**#**gpioexp 1 1 enable >/dev/null || exit 127
# Clear SDIO_SEL, GPIO#13/EXPANDER#1 - Select the SDIO
**#**gpioexp 1 13 output normal low >/dev/null || exit 127
# Set IOTO_RESET, GPIO#4/EXPANDER#3 - IOT0 Reset signal is disabled
**#**gpioexp 3 4 output normal high >/dev/null || exit 127
…
ti_wifi_stop() {
…
# Clear IOTO_RESET, GPIO#4/EXPANDER#3 - IOT0 Reset signal is enabled
**#**gpioexp 3 4 output normal low >/dev/null || exit 127
# Set SDIO_SEL, GPIO#13/EXPANDER#1 - Deselect the SDIO
**#**gpioexp 1 13 output normal high >/dev/null || exit 127
Best regards,
José