# # PINCTRL infrastructure and drivers # menu "Pin controllers" config PINCTRL bool "Support pin controllers" depends on DM help This enables the basic support for pinctrl framework. You may want to enable some more options depending on what you want to do. config PINCTRL_FULL bool "Support full pin controllers" depends on PINCTRL && OF_CONTROL default y help This provides Linux-compatible device tree interface for the pinctrl subsystem. This feature depends on device tree configuration because it parses a device tree to look for the pinctrl device which the peripheral device is associated with. If this option is disabled (it is the only possible choice for non-DT boards), the pinctrl core provides no systematic mechanism for identifying peripheral devices, applying needed pinctrl settings. It is totally up to the implementation of each low-level driver. You can save memory footprint in return for some limitations. config PINCTRL_GENERIC bool "Support generic pin controllers" depends on PINCTRL_FULL default y help Say Y here if you want to use the pinctrl subsystem through the generic DT interface. If enabled, some functions become available to parse common properties such as "pins", "groups", "functions" and some pin configuration parameters. It would be easier if you only need the generic DT interface for pin muxing and pin configuration. If you need to handle vendor-specific DT properties, you can disable this option and implement your own set_state callback in the pinctrl operations. config PINMUX bool "Support pin multiplexing controllers" depends on PINCTRL_GENERIC default y help This option enables pin multiplexing through the generic pinctrl framework. Most SoCs have their own own multiplexing arrangement where a single pin can be used for several functions. An SoC pinctrl driver allows the required function to be selected for each pin. The driver is typically controlled by the device tree. config PINCONF bool "Support pin configuration controllers" depends on PINCTRL_GENERIC help This option enables pin configuration through the generic pinctrl framework. config SPL_PINCTRL bool "Support pin controlloers in SPL" depends on SPL && SPL_DM help This option is an SPL-variant of the PINCTRL option. See the help of PINCTRL for details. config SPL_PINCTRL_FULL bool "Support full pin controllers in SPL" depends on SPL_PINCTRL && SPL_OF_CONTROL default y help This option is an SPL-variant of the PINCTRL_FULL option. See the help of PINCTRL_FULL for details. config SPL_PINCTRL_GENERIC bool "Support generic pin controllers in SPL" depends on SPL_PINCTRL_FULL default y help This option is an SPL-variant of the PINCTRL_GENERIC option. See the help of PINCTRL_GENERIC for details. config SPL_PINMUX bool "Support pin multiplexing controllers in SPL" depends on SPL_PINCTRL_GENERIC default y help This option is an SPL-variant of the PINMUX option. See the help of PINMUX for details. The pinctrl subsystem can add a substantial overhead to the SPL image since it typically requires quite a few tables either in the driver or in the device tree. If this is acceptable and you need to adjust pin multiplexing in SPL in order to boot into U-Boot, enable this option. You will need to enable device tree in SPL for this to work. config SPL_PINCONF bool "Support pin configuration controllers in SPL" depends on SPL_PINCTRL_GENERIC help This option is an SPL-variant of the PINCONF option. See the help of PINCONF for details. if PINCTRL || SPL_PINCTRL config AR933X_PINCTRL bool "QCA/Athores ar933x pin control driver" depends on DM && SOC_AR933X help Support pin multiplexing control on QCA/Athores ar933x SoCs. The driver is controlled by a device tree node which contains both the GPIO definitions and pin control functions for each available multiplex function. config QCA953X_PINCTRL bool "QCA/Athores qca953x pin control driver" depends on DM && SOC_QCA953X help Support pin multiplexing control on QCA/Athores qca953x SoCs. The driver is controlled by a device tree node which contains both the GPIO definitions and pin control functions for each available multiplex function. config ROCKCHIP_PINCTRL bool "Rockchip pin control driver" depends on DM help Support pin multiplexing control on Rockchip SoCs. The driver is controlled by a device tree node which contains both the GPIO definitions and pin control functions for each available multiplex function. config ROCKCHIP_3036_PINCTRL bool "Rockchip rk3036 pin control driver" depends on DM help Support pin multiplexing control on Rockchip rk3036 SoCs. The driver is controlled by a device tree node which contains both the GPIO definitions and pin control functions for each available multiplex function. config PINCTRL_SANDBOX bool "Sandbox pinctrl driver" depends on SANDBOX help This enables pinctrl driver for sandbox. Currently, this driver actually does nothing but print debug messages when pinctrl operations are invoked. config PIC32_PINCTRL bool "Microchip PIC32 pin-control and pin-mux driver" depends on DM && MACH_PIC32 default y help Supports individual pin selection and configuration for each remappable peripheral available on Microchip PIC32 SoCs. This driver is controlled by a device tree node which contains both GPIO defintion and pin control functions. endif source "drivers/pinctrl/nxp/Kconfig" source "drivers/pinctrl/uniphier/Kconfig" source "drivers/pinctrl/exynos/Kconfig" endmenu