1menu "Button Support" 2 3config BUTTON 4 bool "Enable button support" 5 depends on DM 6 help 7 Many boards have buttons which can be used to change behaviour (reset, ...). 8 U-Boot provides a uclass API to implement this feature. Button drivers 9 can provide access to board-specific buttons. Use of the device tree 10 for configuration is encouraged. 11 12config BUTTON_ADC 13 bool "Button adc" 14 depends on BUTTON 15 help 16 Enable support for buttons which are connected to Analog to Digital 17 Converter device. The ADC driver must use driver model. Buttons are 18 configured using the device tree. 19 20config BUTTON_GPIO 21 bool "Button gpio" 22 depends on BUTTON 23 help 24 Enable support for buttons which are connected to GPIO lines. These 25 GPIOs may be on the SoC or some other device which provides GPIOs. 26 The GPIO driver must used driver model. Buttons are configured using 27 the device tree. 28 29endmenu 30