General purpose input/output (GPIO)

The NXP i.MX6UL CPU has five GPIO ports. Each port can generate and control 32 signals.

The MCA features eight GPIO pins (multiplexed with Analog-to-Digital Converter (ADC) functionality).

See MCA general purpose input/output (GPIO) for additional information on MCA GPIOs.

Kernel configuration	CONFIG_GPIO_SYSFS CONFIG_GPIO_MXC CONFIG_GPIO_MCA_CC6UL
Kernel driver	drivers/gpio/gpio-mxc.c drivers/gpio/gpio-mca-cc6ul.c
Device tree binding	Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt Documentation/devicetree/bindings/gpio/gpio-mca-cc6ul.txt

Note MCA lines that are being used as ADC will not be available for request as GPIOs.