1config DM_GPIO 2 bool "Enable Driver Model for GPIO drivers" 3 depends on DM 4 help 5 Enable driver model for GPIO access. The standard GPIO 6 interface (gpio_get_value(), etc.) is then implemented by 7 the GPIO uclass. Drivers provide methods to query the 8 particular GPIOs that they provide. The uclass interface 9 is defined in include/asm-generic/gpio.h. 10 11config LPC32XX_GPIO 12 bool "LPC32XX GPIO driver" 13 depends on DM 14 default n 15 help 16 Support for the LPC32XX GPIO driver. 17 18config SANDBOX_GPIO 19 bool "Enable sandbox GPIO driver" 20 depends on SANDBOX && DM && DM_GPIO 21 help 22 This driver supports some simulated GPIOs which can be adjusted 23 using 'back door' functions like sandbox_gpio_set_value(). Then the 24 GPIOs can be inspected through the normal get_get_value() 25 interface. The purpose of this is to allow GPIOs to be used as 26 normal in sandbox, perhaps with test code actually driving the 27 behaviour of those GPIOs. 28 29config SANDBOX_GPIO_COUNT 30 int "Number of sandbox GPIOs" 31 depends on SANDBOX_GPIO 32 default 128 33 help 34 The sandbox driver can support any number of GPIOs. Generally these 35 are specified using the device tree. But you can also have a number 36 of 'anonymous' GPIOs that do not belong to any device or bank. 37 Select a suitable value depending on your needs. 38