2 # GPIO infrastructure and drivers
8 bool "Enable Driver Model for GPIO drivers"
11 Enable driver model for GPIO access. The standard GPIO
12 interface (gpio_get_value(), etc.) is then implemented by
13 the GPIO uclass. Drivers provide methods to query the
14 particular GPIOs that they provide. The uclass interface
15 is defined in include/asm-generic/gpio.h.
18 bool "Altera PIO driver"
21 Select this to enable PIO for Altera devices. Please find
22 details on the "Embedded Peripherals IP User Guide" of Altera.
25 bool "DWAPB GPIO driver"
26 depends on DM && DM_GPIO
29 Support for the Designware APB GPIO driver.
32 bool "ATMEL PIO4 driver"
36 Say yes here to support the Atmel PIO4 driver.
37 The PIO4 is new version of Atmel PIO controller, which manages
38 up to 128 fully programmable input/output lines. Each I/O line
39 may be dedicated as a general purpose I/O or be assigned to
40 a function of an embedded peripheral.
42 config INTEL_BROADWELL_GPIO
43 bool "Intel Broadwell GPIO driver"
46 This driver supports Broadwell U devices which have an expanded
47 GPIO feature set. The difference is large enough to merit a separate
48 driver from the common Intel ICH6 driver. It supports a total of
49 95 GPIOs which can be configured from the device tree.
52 bool "i.MX7ULP RGPIO2P driver"
56 This driver supports i.MX7ULP Rapid GPIO2P controller.
59 bool "LPC32XX GPIO driver"
63 Support for the LPC32XX GPIO driver.
66 bool "Qualcomm GPIO driver"
70 Support GPIO controllers on Qualcomm Snapdragon family of SoCs.
71 This controller have single bank (default name "soc"), every
72 gpio has it's own set of registers.
73 Only simple GPIO operations are supported (get/set, change of
74 direction and checking pin function).
80 bool "Qualcomm PM8916 PMIC GPIO/keypad driver"
81 depends on DM_GPIO && PMIC_PM8916
83 Support for GPIO pins and power/reset buttons found on
85 Default name for GPIO bank is "pm8916".
86 Power and reset buttons are placed in "pm8916_key" bank and
87 have gpio numbers 0 and 1 respectively.
90 bool "PCF8575 I2C GPIO Expander driver"
91 depends on DM_GPIO && DM_I2C
93 Support for PCF8575 I2C 16-bit GPIO expander. Most of these
94 chips are from NXP and TI.
97 bool "Rockchip GPIO driver"
100 Support GPIO access on Rockchip SoCs. The GPIOs are arranged into
101 a number of banks (different for each SoC type) each with 32 GPIOs.
102 The GPIOs for a device are defined in the device tree with one node
106 bool "Enable sandbox GPIO driver"
107 depends on SANDBOX && DM && DM_GPIO
109 This driver supports some simulated GPIOs which can be adjusted
110 using 'back door' functions like sandbox_gpio_set_value(). Then the
111 GPIOs can be inspected through the normal get_get_value()
112 interface. The purpose of this is to allow GPIOs to be used as
113 normal in sandbox, perhaps with test code actually driving the
114 behaviour of those GPIOs.
116 config SANDBOX_GPIO_COUNT
117 int "Number of sandbox GPIOs"
118 depends on SANDBOX_GPIO
121 The sandbox driver can support any number of GPIOs. Generally these
122 are specified using the device tree. But you can also have a number
123 of 'anonymous' GPIOs that do not belong to any device or bank.
124 Select a suitable value depending on your needs.
127 bool "Tegra20..210 GPIO driver"
130 Support for the GPIO controller contained in NVIDIA Tegra20 through
134 bool "Tegra186 GPIO driver"
137 Support for the GPIO controller contained in NVIDIA Tegra186. This
138 covers both the "main" and "AON" controller instances, even though
139 they have slightly different register layout.
143 depends on ARCH_UNIPHIER
145 Say yes here to support UniPhier GPIOs.
148 bool "Vybrid GPIO driver"
152 Say yes here to support Vybrid vf610 GPIOs.
155 bool "Microchip PIC32 GPIO driver"
156 depends on DM_GPIO && MACH_PIC32
159 Say yes here to support Microchip PIC32 GPIOs.
162 bool "Marvell MVEBU GPIO driver"
163 depends on DM_GPIO && ARCH_MVEBU
166 Say yes here to support Marvell MVEBU (Armada XP/38x) GPIOs.
169 bool "Zynq GPIO driver"
170 depends on DM_GPIO && (ARCH_ZYNQ || ARCH_ZYNQMP)
173 Supports GPIO access on Zynq SoC.
176 bool "74x164 serial-in/parallel-out 8-bits shift register"
179 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
180 shift registers, such as 74lv165, 74hc595.
181 This driver can be used to provide access to more gpio outputs.
184 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
187 Say yes here to provide access to several register-oriented
188 SMBus I/O expanders, made mostly by NXP or TI. Compatible
191 4 bits: pca9536, pca9537
193 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
194 pca9556, pca9557, pca9574, tca6408, xra1202
196 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
201 40 bits: pca9505, pca9698
203 Now, max 24 bits chips and PCA953X compatible chips are
207 bool "Freescale MPC85XX GPIO driver"
210 This driver supports the built-in GPIO controller of MPC85XX CPUs.
211 Each GPIO bank is identified by its own entry in the device tree,
214 gpio-controller@fc00 {
216 compatible = "fsl,pq3-gpio";
220 By default, each bank is assumed to have 32 GPIOs, but the ngpios
221 setting is honored, so the number of GPIOs for each bank is
222 configurable to match the actual GPIO count of the SoC (e.g. the
223 32/32/23 banks of the P1022 SoC).
225 Aside from the standard functions of input/output mode, and output
226 value setting, the open-drain feature, which can configure individual
227 GPIOs to work as open-drain outputs, is supported.
229 The driver has been tested on MPC85XX, but it is likely that other
230 PowerQUICC III devices will work as well.