# # 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 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 PINCONF_RECURSIVE bool "Support recursive binding for pin configuration nodes" depends on PINCTRL_FULL default n if ARCH_STM32MP default y help In the Linux pinctrl binding, the pin configuration nodes need not be direct children of the pin controller device (may be grandchildren for example). It is define is each individual pin controller device. Say Y here if you want to keep this behavior with the pinconfig u-class: all sub are recursively bounded. If the option is disabled, this behavior is deactivated and only the direct children of pin controller will be assumed as pin configuration; you can save memory footprint when this feature is no needed. config SPL_PINCTRL bool "Support pin controllers 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 TPL_PINCTRL bool "Support pin controllers in TPL" depends on TPL && TPL_DM help This option is an TPL 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 n if TARGET_STM32F746_DISCO default y help This option is an SPL-variant of the PINCTRL_FULL option. See the help of PINCTRL_FULL for details. config TPL_PINCTRL_FULL bool "Support full pin controllers in TPL" depends on TPL_PINCTRL && TPL_OF_CONTROL help This option is an TPL-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. config SPL_PINCONF_RECURSIVE bool "Support recursive binding for pin configuration nodes in SPL" depends on SPL_PINCTRL_FULL default n if ARCH_STM32MP default y help This option is an SPL-variant of the PINCONF_RECURSIVE option. See the help of PINCONF_RECURSIVE for details. if PINCTRL || SPL_PINCTRL config PINCTRL_APPLE bool "Apple pinctrl driver" depends on DM && PINCTRL_GENERIC && ARCH_APPLE default y help Support pin multiplexing on Apple 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_AR933X 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 PINCTRL_AT91 bool "AT91 pinctrl driver" depends on DM help This option is to enable the AT91 pinctrl driver for AT91 PIO controller. AT91 PIO controller is a combined gpio-controller, pin-mux and pin-config module. Each I/O pin may be dedicated as a general-purpose I/O or be assigned to a function of an embedded peripheral. Each I/O pin has a glitch filter providing rejection of glitches lower than one-half of peripheral clock cycle and a debouncing filter providing rejection of unwanted pulses from key or push button operations. You can also control the multi-driver capability, pull-up and pull-down feature on each I/O pin. config PINCTRL_AT91PIO4 bool "AT91 PIO4 pinctrl driver" depends on DM help This option is to enable the AT91 pinctrl driver for AT91 PIO4 controller which is available on SAMA5D2 SoC. config PINCTRL_INTEL bool "Standard Intel pin-control and pin-mux driver" help Recent Intel chips such as Apollo Lake (APL) use a common pin control and GPIO scheme. The settings for this come from an SoC-specific driver which must be separately enabled. The driver supports setting pins on start-up and changing the GPIO attributes. config PINCTRL_PIC32 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 definition and pin control functions. config PINCTRL_QCA953X 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 PINCTRL_QE bool "QE based pinctrl driver, like on mpc83xx" depends on DM help This option is to enable the QE pinctrl driver for QE based io controller. config PINCTRL_ROCKCHIP_RV1108 bool "Rockchip rv1108 pin control driver" depends on DM help Support pin multiplexing control on Rockchip rv1108 SoC. 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 PINCTRL_SINGLE bool "Single register pin-control and pin-multiplex driver" depends on DM help This enables pinctrl driver for systems using a single register for pin configuration and multiplexing. TI's AM335X SoCs are examples of such systems. Depending on the platform make sure to also enable OF_TRANSLATE and eventually SPL_OF_TRANSLATE to get correct address translations. config PINCTRL_STI bool "STMicroelectronics STi pin-control and pin-mux driver" depends on DM && ARCH_STI default y help Support pin multiplexing control on STMicrolectronics STi 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_STM32 bool "ST STM32 pin control driver" depends on DM help Supports pin multiplexing control on stm32 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_STMFX bool "STMicroelectronics STMFX I2C GPIO expander pinctrl driver" depends on DM && PINCTRL_FULL help I2C driver for STMicroelectronics Multi-Function eXpander (STMFX) GPIO expander. Supports pin multiplexing control on stm32 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 SPL_PINCTRL_STMFX bool "STMicroelectronics STMFX I2C GPIO expander pinctrl driver in SPL" depends on SPL_PINCTRL_FULL help This option is an SPL-variant of the SPL_PINCTRL_STMFX option. See the help of PINCTRL_STMFX for details. config ASPEED_AST2500_PINCTRL bool "Aspeed AST2500 pin control driver" depends on DM && PINCTRL_GENERIC && ASPEED_AST2500 default y help Support pin multiplexing control on Aspeed ast2500 SoC. The driver uses Generic Pinctrl framework and is compatible with the Linux driver, i.e. it uses the same device tree configuration. config ASPEED_AST2600_PINCTRL bool "Aspeed AST2600 pin control driver" depends on DM && PINCTRL_GENERIC && ASPEED_AST2600 default y help Support pin multiplexing control on Aspeed ast2600 SoC. The driver uses Generic Pinctrl framework and is compatible with the Linux driver, i.e. it uses the same device tree configuration. config PINCTRL_K210 bool "Kendryte K210 Fully-Programmable Input/Output Array driver" depends on DM && PINCTRL_GENERIC help Support pin multiplexing on the K210. The "FPIOA" can remap any supported function to any multifunctional IO pin. It can also perform basic GPIO functions, such as reading the current value of a pin. config PINCTRL_ZYNQMP bool "Xilinx ZynqMP pin control driver" depends on DM && PINCTRL_GENERIC && ARCH_ZYNQMP default y help Support pin multiplexing control on Xilinx ZynqMP. The driver uses Generic Pinctrl framework and is compatible with the Linux driver, i.e. it uses the same device tree configuration. endif source "drivers/pinctrl/broadcom/Kconfig" source "drivers/pinctrl/exynos/Kconfig" source "drivers/pinctrl/intel/Kconfig" source "drivers/pinctrl/mediatek/Kconfig" source "drivers/pinctrl/meson/Kconfig" source "drivers/pinctrl/mscc/Kconfig" source "drivers/pinctrl/mtmips/Kconfig" source "drivers/pinctrl/mvebu/Kconfig" source "drivers/pinctrl/nexell/Kconfig" source "drivers/pinctrl/nxp/Kconfig" source "drivers/pinctrl/renesas/Kconfig" source "drivers/pinctrl/rockchip/Kconfig" source "drivers/pinctrl/sunxi/Kconfig" source "drivers/pinctrl/uniphier/Kconfig" endmenu