#
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# GPIO infrastructure and drivers
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#
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menu "GPIO Support"
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config DM_GPIO
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bool "Enable Driver Model for GPIO drivers"
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depends on DM
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help
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Enable driver model for GPIO access. The standard GPIO
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interface (gpio_get_value(), etc.) is then implemented by
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the GPIO uclass. Drivers provide methods to query the
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particular GPIOs that they provide. The uclass interface
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is defined in include/asm-generic/gpio.h.
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config GPIO_HOG
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bool "Enable GPIO hog support"
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depends on DM_GPIO
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default n
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help
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Enable gpio hog support
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The GPIO chip may contain GPIO hog definitions. GPIO hogging
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is a mechanism providing automatic GPIO request and config-
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uration as part of the gpio-controller's driver probe function.
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config GPIO_NO_UC_FLAG_SEQ_ALIAS
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bool "Disable GPIO uclass sequence themselves with aliases"
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depends on USING_KERNEL_DTB
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default n
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help
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Disable GPIO uclass sequence, this is a workaround when kernel
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dtb feature is enabled. Avoid gpio device probe failed when
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alloc req_seq both for gpio devices from U-Boot and kernel dtb.
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config ALTERA_PIO
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bool "Altera PIO driver"
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depends on DM_GPIO
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help
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Select this to enable PIO for Altera devices. Please find
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details on the "Embedded Peripherals IP User Guide" of Altera.
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config BCM6345_GPIO
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bool "BCM6345 GPIO driver"
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depends on DM_GPIO && ARCH_BMIPS
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help
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This driver supports the GPIO banks on BCM6345 SoCs.
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config DWAPB_GPIO
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bool "DWAPB GPIO driver"
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depends on DM && DM_GPIO
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default n
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help
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Support for the Designware APB GPIO driver.
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config AT91_GPIO
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bool "AT91 PIO GPIO driver"
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depends on DM_GPIO
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default n
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help
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Say yes here to select AT91 PIO GPIO driver. AT91 PIO
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controller manages up to 32 fully programmable input/output
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lines. Each I/O line may be dedicated as a general-purpose
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I/O or be assigned to a function of an embedded peripheral.
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The assignment to a function of an embedded peripheral is
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the responsibility of AT91 Pinctrl driver. This driver is
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responsible for the general-purpose I/O.
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config ATMEL_PIO4
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bool "ATMEL PIO4 driver"
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depends on DM_GPIO
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default n
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help
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Say yes here to support the Atmel PIO4 driver.
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The PIO4 is new version of Atmel PIO controller, which manages
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up to 128 fully programmable input/output lines. Each I/O line
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may be dedicated as a general purpose I/O or be assigned to
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a function of an embedded peripheral.
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config INTEL_BROADWELL_GPIO
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bool "Intel Broadwell GPIO driver"
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depends on DM
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help
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This driver supports Broadwell U devices which have an expanded
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GPIO feature set. The difference is large enough to merit a separate
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driver from the common Intel ICH6 driver. It supports a total of
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95 GPIOs which can be configured from the device tree.
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config INTEL_ICH6_GPIO
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bool "Intel ICH6 compatible legacy GPIO driver"
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depends on DM_GPIO
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help
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Say yes here to select Intel ICH6 compatible legacy GPIO driver.
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config IMX_RGPIO2P
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bool "i.MX7ULP RGPIO2P driver"
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depends on DM
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default n
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help
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This driver supports i.MX7ULP Rapid GPIO2P controller.
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config LPC32XX_GPIO
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bool "LPC32XX GPIO driver"
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depends on DM
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default n
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help
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Support for the LPC32XX GPIO driver.
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config MSM_GPIO
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bool "Qualcomm GPIO driver"
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depends on DM_GPIO
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default n
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help
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Support GPIO controllers on Qualcomm Snapdragon family of SoCs.
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This controller have single bank (default name "soc"), every
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gpio has it's own set of registers.
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Only simple GPIO operations are supported (get/set, change of
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direction and checking pin function).
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Supported devices:
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- APQ8016
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- MSM8916
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config OMAP_GPIO
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bool "TI OMAP GPIO driver"
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depends on ARCH_OMAP2PLUS
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default y
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help
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Support GPIO controllers on the TI OMAP3/4/5 and related (such as
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AM335x/AM43xx/AM57xx/DRA7xx/etc) families of SoCs.
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config CMD_PCA953X
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bool "Enable the pca953x command"
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help
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Deprecated: This should be converted to driver model.
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This command provides access to a pca953x GPIO device using the
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legacy GPIO interface. Several subcommands are provided which mirror
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the standard 'gpio' command. It should use that instead.
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config PM8916_GPIO
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bool "Qualcomm PM8916 PMIC GPIO/keypad driver"
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depends on DM_GPIO && PMIC_PM8916
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help
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Support for GPIO pins and power/reset buttons found on
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Qualcomm PM8916 PMIC.
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Default name for GPIO bank is "pm8916".
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Power and reset buttons are placed in "pm8916_key" bank and
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have gpio numbers 0 and 1 respectively.
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config PCF8575_GPIO
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bool "PCF8575 I2C GPIO Expander driver"
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depends on DM_GPIO && DM_I2C
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help
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Support for PCF8575 I2C 16-bit GPIO expander. Most of these
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chips are from NXP and TI.
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config ROCKCHIP_GPIO
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bool "Rockchip GPIO driver"
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depends on DM_GPIO
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help
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Support GPIO access on Rockchip SoCs. The GPIOs are arranged into
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a number of banks (different for each SoC type) each with 32 GPIOs.
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The GPIOs for a device are defined in the device tree with one node
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for each bank.
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config ROCKCHIP_GPIO_V2
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bool "Rockchip GPIO driver version 2.0"
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depends on ROCKCHIP_GPIO
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default n
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help
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Support GPIO access on Rockchip SoCs. The GPIOs are arranged into
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a number of banks (different for each SoC type) each with 32 GPIOs.
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The GPIOs for a device are defined in the device tree with one node
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for each bank.
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Support version 2.0 GPIO controller, which support write enable bits
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for some registers, such as dr, ddr.
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config SANDBOX_GPIO
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bool "Enable sandbox GPIO driver"
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depends on SANDBOX && DM && DM_GPIO
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help
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This driver supports some simulated GPIOs which can be adjusted
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using 'back door' functions like sandbox_gpio_set_value(). Then the
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GPIOs can be inspected through the normal get_get_value()
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interface. The purpose of this is to allow GPIOs to be used as
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normal in sandbox, perhaps with test code actually driving the
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behaviour of those GPIOs.
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config SANDBOX_GPIO_COUNT
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int "Number of sandbox GPIOs"
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depends on SANDBOX_GPIO
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default 128
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help
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The sandbox driver can support any number of GPIOs. Generally these
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are specified using the device tree. But you can also have a number
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of 'anonymous' GPIOs that do not belong to any device or bank.
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Select a suitable value depending on your needs.
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config CMD_TCA642X
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bool "tca642x - Command to access tca642x state"
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help
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DEPRECATED - This needs conversion to driver model
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This provides a way to looking at the pin state of this device.
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This mirrors the 'gpio' command and that should be used in preference
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to custom code.
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config TEGRA_GPIO
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bool "Tegra20..210 GPIO driver"
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depends on DM_GPIO
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help
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Support for the GPIO controller contained in NVIDIA Tegra20 through
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Tegra210.
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config TEGRA186_GPIO
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bool "Tegra186 GPIO driver"
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depends on DM_GPIO
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help
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Support for the GPIO controller contained in NVIDIA Tegra186. This
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covers both the "main" and "AON" controller instances, even though
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they have slightly different register layout.
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config GPIO_UNIPHIER
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bool "UniPhier GPIO"
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depends on ARCH_UNIPHIER
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help
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Say yes here to support UniPhier GPIOs.
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config VYBRID_GPIO
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bool "Vybrid GPIO driver"
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depends on DM
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default n
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help
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Say yes here to support Vybrid vf610 GPIOs.
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config PIC32_GPIO
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bool "Microchip PIC32 GPIO driver"
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depends on DM_GPIO && MACH_PIC32
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default y
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help
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Say yes here to support Microchip PIC32 GPIOs.
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config STM32F7_GPIO
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bool "ST STM32 GPIO driver"
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depends on DM_GPIO && STM32
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default y
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help
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Device model driver support for STM32 GPIO controller. It should be
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usable on many stm32 families like stm32f4 & stm32H7.
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Tested on STM32F7.
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config MVEBU_GPIO
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bool "Marvell MVEBU GPIO driver"
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depends on DM_GPIO && ARCH_MVEBU
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default y
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help
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Say yes here to support Marvell MVEBU (Armada XP/38x) GPIOs.
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config ZYNQ_GPIO
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bool "Zynq GPIO driver"
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depends on DM_GPIO && (ARCH_ZYNQ || ARCH_ZYNQMP)
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default y
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help
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Supports GPIO access on Zynq SoC.
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config DM_74X164
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bool "74x164 serial-in/parallel-out 8-bits shift register"
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depends on DM_GPIO
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help
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Driver for 74x164 compatible serial-in/parallel-out 8-outputs
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shift registers, such as 74lv165, 74hc595.
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This driver can be used to provide access to more gpio outputs.
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config DM_PCA953X
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bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
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depends on DM_GPIO
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help
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Say yes here to provide access to several register-oriented
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SMBus I/O expanders, made mostly by NXP or TI. Compatible
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models include:
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4 bits: pca9536, pca9537
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8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
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pca9556, pca9557, pca9574, tca6408, xra1202
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16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
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tca6416
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24 bits: tca6424
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40 bits: pca9505, pca9698
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Now, max 24 bits chips and PCA953X compatible chips are
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supported
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config MPC85XX_GPIO
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bool "Freescale MPC85XX GPIO driver"
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depends on DM_GPIO
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help
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This driver supports the built-in GPIO controller of MPC85XX CPUs.
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Each GPIO bank is identified by its own entry in the device tree,
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i.e.
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gpio-controller@fc00 {
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#gpio-cells = <2>;
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compatible = "fsl,pq3-gpio";
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reg = <0xfc00 0x100>
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}
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By default, each bank is assumed to have 32 GPIOs, but the ngpios
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setting is honored, so the number of GPIOs for each bank is
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configurable to match the actual GPIO count of the SoC (e.g. the
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32/32/23 banks of the P1022 SoC).
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Aside from the standard functions of input/output mode, and output
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value setting, the open-drain feature, which can configure individual
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GPIOs to work as open-drain outputs, is supported.
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The driver has been tested on MPC85XX, but it is likely that other
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PowerQUICC III devices will work as well.
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endmenu
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