so only a small amount is available for gpio use.
Requires ACPI device enumeration code to set up a platform device.
+
+config PINCTRL_CHERRYVIEW
+ tristate "Intel Cherryview/Braswell pinctrl and GPIO driver"
+ depends on ACPI
+ select PINMUX
+ select PINCONF
+ select GENERIC_PINCONF
+ select GPIOLIB
+ select GPIOLIB_IRQCHIP
+ help
+ Cherryview/Braswell pinctrl driver provides an interface that
+ allows configuring of SoC pins and using them as GPIOs.