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The Fully-Programmable Input/Output Array (FPIOA) device controls 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. However, GPIO functionality remains largely unimplemented (in favor of the dedicated GPIO peripherals). Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
317 lines
11 KiB
Text
317 lines
11 KiB
Text
#
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# PINCTRL infrastructure and drivers
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#
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menu "Pin controllers"
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config PINCTRL
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bool "Support pin controllers"
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depends on DM
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help
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This enables the basic support for pinctrl framework. You may want
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to enable some more options depending on what you want to do.
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config PINCTRL_FULL
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bool "Support full pin controllers"
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depends on PINCTRL && OF_CONTROL
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default y
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help
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This provides Linux-compatible device tree interface for the pinctrl
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subsystem. This feature depends on device tree configuration because
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it parses a device tree to look for the pinctrl device which the
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peripheral device is associated with.
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If this option is disabled (it is the only possible choice for non-DT
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boards), the pinctrl core provides no systematic mechanism for
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identifying peripheral devices, applying needed pinctrl settings.
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It is totally up to the implementation of each low-level driver.
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You can save memory footprint in return for some limitations.
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config PINCTRL_GENERIC
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bool "Support generic pin controllers"
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depends on PINCTRL_FULL
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default y
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help
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Say Y here if you want to use the pinctrl subsystem through the
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generic DT interface. If enabled, some functions become available
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to parse common properties such as "pins", "groups", "functions" and
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some pin configuration parameters. It would be easier if you only
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need the generic DT interface for pin muxing and pin configuration.
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If you need to handle vendor-specific DT properties, you can disable
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this option and implement your own set_state callback in the pinctrl
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operations.
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config PINMUX
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bool "Support pin multiplexing controllers"
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depends on PINCTRL_GENERIC
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default y
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help
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This option enables pin multiplexing through the generic pinctrl
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framework. Most SoCs have their own multiplexing arrangement where
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a single pin can be used for several functions. An SoC pinctrl driver
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allows the required function to be selected for each pin.
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The driver is typically controlled by the device tree.
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config PINCONF
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bool "Support pin configuration controllers"
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depends on PINCTRL_GENERIC
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help
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This option enables pin configuration through the generic pinctrl
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framework.
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config PINCONF_RECURSIVE
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bool "Support recursive binding for pin configuration nodes"
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depends on PINCTRL_FULL
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default n if ARCH_STM32MP
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default y
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help
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In the Linux pinctrl binding, the pin configuration nodes need not be
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direct children of the pin controller device (may be grandchildren for
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example). It is define is each individual pin controller device.
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Say Y here if you want to keep this behavior with the pinconfig
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u-class: all sub are recursivelly bounded.
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If the option is disabled, this behavior is deactivated and only
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the direct children of pin controller will be assumed as pin
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configuration; you can save memory footprint when this feature is
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no needed.
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config SPL_PINCTRL
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bool "Support pin controllers in SPL"
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depends on SPL && SPL_DM
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help
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This option is an SPL-variant of the PINCTRL option.
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See the help of PINCTRL for details.
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config TPL_PINCTRL
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bool "Support pin controllers in TPL"
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depends on TPL && TPL_DM
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help
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This option is an TPL variant of the PINCTRL option.
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See the help of PINCTRL for details.
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config SPL_PINCTRL_FULL
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bool "Support full pin controllers in SPL"
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depends on SPL_PINCTRL && SPL_OF_CONTROL
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default n if TARGET_STM32F746_DISCO
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default y
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help
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This option is an SPL-variant of the PINCTRL_FULL option.
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See the help of PINCTRL_FULL for details.
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config TPL_PINCTRL_FULL
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bool "Support full pin controllers in TPL"
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depends on TPL_PINCTRL && TPL_OF_CONTROL
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help
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This option is an TPL-variant of the PINCTRL_FULL option.
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See the help of PINCTRL_FULL for details.
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config SPL_PINCTRL_GENERIC
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bool "Support generic pin controllers in SPL"
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depends on SPL_PINCTRL_FULL
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default y
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help
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This option is an SPL-variant of the PINCTRL_GENERIC option.
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See the help of PINCTRL_GENERIC for details.
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config SPL_PINMUX
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bool "Support pin multiplexing controllers in SPL"
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depends on SPL_PINCTRL_GENERIC
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default y
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help
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This option is an SPL-variant of the PINMUX option.
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See the help of PINMUX for details.
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The pinctrl subsystem can add a substantial overhead to the SPL
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image since it typically requires quite a few tables either in the
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driver or in the device tree. If this is acceptable and you need
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to adjust pin multiplexing in SPL in order to boot into U-Boot,
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enable this option. You will need to enable device tree in SPL
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for this to work.
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config SPL_PINCONF
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bool "Support pin configuration controllers in SPL"
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depends on SPL_PINCTRL_GENERIC
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help
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This option is an SPL-variant of the PINCONF option.
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See the help of PINCONF for details.
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config SPL_PINCONF_RECURSIVE
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bool "Support recursive binding for pin configuration nodes in SPL"
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depends on SPL_PINCTRL_FULL
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default n if ARCH_STM32MP
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default y
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help
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This option is an SPL-variant of the PINCONF_RECURSIVE option.
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See the help of PINCONF_RECURSIVE for details.
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if PINCTRL || SPL_PINCTRL
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config PINCTRL_AR933X
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bool "QCA/Athores ar933x pin control driver"
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depends on DM && SOC_AR933X
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help
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Support pin multiplexing control on QCA/Athores ar933x SoCs.
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The driver is controlled by a device tree node which contains
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both the GPIO definitions and pin control functions for each
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available multiplex function.
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config PINCTRL_AT91
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bool "AT91 pinctrl driver"
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depends on DM
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help
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This option is to enable the AT91 pinctrl driver for AT91 PIO
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controller.
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AT91 PIO controller is a combined gpio-controller, pin-mux and
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pin-config module. Each I/O pin may be dedicated as a general-purpose
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I/O or be assigned to a function of an embedded peripheral. Each I/O
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pin has a glitch filter providing rejection of glitches lower than
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one-half of peripheral clock cycle and a debouncing filter providing
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rejection of unwanted pulses from key or push button operations. You
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can also control the multi-driver capability, pull-up and pull-down
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feature on each I/O pin.
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config PINCTRL_AT91PIO4
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bool "AT91 PIO4 pinctrl driver"
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depends on DM
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help
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This option is to enable the AT91 pinctrl driver for AT91 PIO4
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controller which is available on SAMA5D2 SoC.
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config PINCTRL_INTEL
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bool "Standard Intel pin-control and pin-mux driver"
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help
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Recent Intel chips such as Apollo Lake (APL) use a common pin control
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and GPIO scheme. The settings for this come from an SoC-specific
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driver which must be separately enabled. The driver supports setting
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pins on start-up and changing the GPIO attributes.
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config PINCTRL_PIC32
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bool "Microchip PIC32 pin-control and pin-mux driver"
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depends on DM && MACH_PIC32
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default y
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help
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Supports individual pin selection and configuration for each
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remappable peripheral available on Microchip PIC32
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SoCs. This driver is controlled by a device tree node which
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contains both GPIO definition and pin control functions.
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config PINCTRL_QCA953X
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bool "QCA/Athores qca953x pin control driver"
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depends on DM && SOC_QCA953X
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help
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Support pin multiplexing control on QCA/Athores qca953x SoCs.
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The driver is controlled by a device tree node which contains both
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the GPIO definitions and pin control functions for each available
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multiplex function.
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config PINCTRL_QE
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bool "QE based pinctrl driver, like on mpc83xx"
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depends on DM
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help
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This option is to enable the QE pinctrl driver for QE based io
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controller.
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config PINCTRL_ROCKCHIP_RV1108
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bool "Rockchip rv1108 pin control driver"
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depends on DM
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help
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Support pin multiplexing control on Rockchip rv1108 SoC.
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The driver is controlled by a device tree node which contains
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both the GPIO definitions and pin control functions for each
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available multiplex function.
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config PINCTRL_SANDBOX
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bool "Sandbox pinctrl driver"
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depends on SANDBOX
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help
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This enables pinctrl driver for sandbox.
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Currently, this driver actually does nothing but print debug
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messages when pinctrl operations are invoked.
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config PINCTRL_SINGLE
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bool "Single register pin-control and pin-multiplex driver"
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depends on DM
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help
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This enables pinctrl driver for systems using a single register for
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pin configuration and multiplexing. TI's AM335X SoCs are examples of
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such systems.
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Depending on the platform make sure to also enable OF_TRANSLATE and
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eventually SPL_OF_TRANSLATE to get correct address translations.
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config PINCTRL_STI
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bool "STMicroelectronics STi pin-control and pin-mux driver"
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depends on DM && ARCH_STI
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default y
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help
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Support pin multiplexing control on STMicrolectronics STi SoCs.
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The driver is controlled by a device tree node which contains both
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the GPIO definitions and pin control functions for each available
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multiplex function.
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config PINCTRL_STM32
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bool "ST STM32 pin control driver"
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depends on DM
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help
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Supports pin multiplexing control on stm32 SoCs.
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The driver is controlled by a device tree node which contains both
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the GPIO definitions and pin control functions for each available
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multiplex function.
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config PINCTRL_STMFX
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bool "STMicroelectronics STMFX I2C GPIO expander pinctrl driver"
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depends on DM && PINCTRL_FULL
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help
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I2C driver for STMicroelectronics Multi-Function eXpander (STMFX)
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GPIO expander.
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Supports pin multiplexing control on stm32 SoCs.
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The driver is controlled by a device tree node which contains both
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the GPIO definitions and pin control functions for each available
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multiplex function.
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config SPL_PINCTRL_STMFX
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bool "STMicroelectronics STMFX I2C GPIO expander pinctrl driver in SPL"
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depends on SPL_PINCTRL_FULL
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help
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This option is an SPL-variant of the SPL_PINCTRL_STMFX option.
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See the help of PINCTRL_STMFX for details.
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config ASPEED_AST2500_PINCTRL
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bool "Aspeed AST2500 pin control driver"
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depends on DM && PINCTRL_GENERIC && ASPEED_AST2500
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default y
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help
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Support pin multiplexing control on Aspeed ast2500 SoC. The driver
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uses Generic Pinctrl framework and is compatible with the Linux
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driver, i.e. it uses the same device tree configuration.
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config PINCTRL_K210
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bool "Kendryte K210 Fully-Programmable Input/Output Array driver"
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depends on DM && PINCTRL_GENERIC
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help
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Support pin multiplexing on the K210. The "FPIOA" can remap any
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supported function to any multifunctional IO pin. It can also perform
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basic GPIO functions, such as reading the current value of a pin.
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endif
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source "drivers/pinctrl/broadcom/Kconfig"
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source "drivers/pinctrl/exynos/Kconfig"
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source "drivers/pinctrl/intel/Kconfig"
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source "drivers/pinctrl/mediatek/Kconfig"
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source "drivers/pinctrl/meson/Kconfig"
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source "drivers/pinctrl/mscc/Kconfig"
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source "drivers/pinctrl/mtmips/Kconfig"
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source "drivers/pinctrl/mvebu/Kconfig"
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source "drivers/pinctrl/nexell/Kconfig"
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source "drivers/pinctrl/nxp/Kconfig"
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source "drivers/pinctrl/renesas/Kconfig"
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source "drivers/pinctrl/rockchip/Kconfig"
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source "drivers/pinctrl/uniphier/Kconfig"
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endmenu
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