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 "LPC32XX GPIO driver"
56 Support for the LPC32XX GPIO driver.
59 bool "Qualcomm GPIO driver"
63 Support GPIO controllers on Qualcomm Snapdragon family of SoCs.
64 This controller have single bank (default name "soc"), every
65 gpio has it's own set of registers.
66 Only simple GPIO operations are supported (get/set, change of
67 direction and checking pin function).
73 bool "Qualcomm PM8916 PMIC GPIO/keypad driver"
74 depends on DM_GPIO && PMIC_PM8916
76 Support for GPIO pins and power/reset buttons found on
78 Default name for GPIO bank is "pm8916".
79 Power and reset buttons are placed in "pm8916_key" bank and
80 have gpio numbers 0 and 1 respectively.
83 bool "PCF8575 I2C GPIO Expander driver"
84 depends on DM_GPIO && DM_I2C
86 Support for PCF8575 I2C 16-bit GPIO expander. Most of these
87 chips are from NXP and TI.
90 bool "Rockchip GPIO driver"
93 Support GPIO access on Rockchip SoCs. The GPIOs are arranged into
94 a number of banks (different for each SoC type) each with 32 GPIOs.
95 The GPIOs for a device are defined in the device tree with one node
99 bool "Enable sandbox GPIO driver"
100 depends on SANDBOX && DM && DM_GPIO
102 This driver supports some simulated GPIOs which can be adjusted
103 using 'back door' functions like sandbox_gpio_set_value(). Then the
104 GPIOs can be inspected through the normal get_get_value()
105 interface. The purpose of this is to allow GPIOs to be used as
106 normal in sandbox, perhaps with test code actually driving the
107 behaviour of those GPIOs.
109 config SANDBOX_GPIO_COUNT
110 int "Number of sandbox GPIOs"
111 depends on SANDBOX_GPIO
114 The sandbox driver can support any number of GPIOs. Generally these
115 are specified using the device tree. But you can also have a number
116 of 'anonymous' GPIOs that do not belong to any device or bank.
117 Select a suitable value depending on your needs.
120 bool "Tegra20..210 GPIO driver"
123 Support for the GPIO controller contained in NVIDIA Tegra20 through
127 bool "Tegra186 GPIO driver"
130 Support for the GPIO controller contained in NVIDIA Tegra186. This
131 covers both the "main" and "AON" controller instances, even though
132 they have slightly different register layout.
136 depends on ARCH_UNIPHIER
138 Say yes here to support UniPhier GPIOs.
141 bool "Vybrid GPIO driver"
145 Say yes here to support Vybrid vf610 GPIOs.
148 bool "Microchip PIC32 GPIO driver"
149 depends on DM_GPIO && MACH_PIC32
152 Say yes here to support Microchip PIC32 GPIOs.
155 bool "Marvell MVEBU GPIO driver"
156 depends on DM_GPIO && ARCH_MVEBU
159 Say yes here to support Marvell MVEBU (Armada XP/38x) GPIOs.
162 bool "Zynq GPIO driver"
163 depends on DM_GPIO && (ARCH_ZYNQ || ARCH_ZYNQMP)
166 Supports GPIO access on Zynq SoC.
169 bool "74x164 serial-in/parallel-out 8-bits shift register"
172 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
173 shift registers, such as 74lv165, 74hc595.
174 This driver can be used to provide access to more gpio outputs.
177 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
180 Say yes here to provide access to several register-oriented
181 SMBus I/O expanders, made mostly by NXP or TI. Compatible
184 4 bits: pca9536, pca9537
186 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
187 pca9556, pca9557, pca9574, tca6408, xra1202
189 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
194 40 bits: pca9505, pca9698
196 Now, max 24 bits chips and PCA953X compatible chips are
200 bool "Freescale MPC85XX GPIO driver"
203 This driver supports the built-in GPIO controller of MPC85XX CPUs.
204 Each GPIO bank is identified by its own entry in the device tree,
207 gpio-controller@fc00 {
209 compatible = "fsl,pq3-gpio";
213 By default, each bank is assumed to have 32 GPIOs, but the ngpios
214 setting is honored, so the number of GPIOs for each bank is
215 configurable to match the actual GPIO count of the SoC (e.g. the
216 32/32/23 banks of the P1022 SoC).
218 Aside from the standard functions of input/output mode, and output
219 value setting, the open-drain feature, which can configure individual
220 GPIOs to work as open-drain outputs, is supported.
222 The driver has been tested on MPC85XX, but it is likely that other
223 PowerQUICC III devices will work as well.