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 "AT91 PIO GPIO driver"
36 Say yes here to select AT91 PIO GPIO driver. AT91 PIO
37 controller manages up to 32 fully programmable input/output
38 lines. Each I/O line may be dedicated as a general-purpose
39 I/O or be assigned to a function of an embedded peripheral.
40 The assignment to a function of an embedded peripheral is
41 the responsibility of AT91 Pinctrl driver. This driver is
42 responsible for the general-purpose I/O.
45 bool "ATMEL PIO4 driver"
49 Say yes here to support the Atmel PIO4 driver.
50 The PIO4 is new version of Atmel PIO controller, which manages
51 up to 128 fully programmable input/output lines. Each I/O line
52 may be dedicated as a general purpose I/O or be assigned to
53 a function of an embedded peripheral.
55 config INTEL_BROADWELL_GPIO
56 bool "Intel Broadwell GPIO driver"
59 This driver supports Broadwell U devices which have an expanded
60 GPIO feature set. The difference is large enough to merit a separate
61 driver from the common Intel ICH6 driver. It supports a total of
62 95 GPIOs which can be configured from the device tree.
65 bool "i.MX7ULP RGPIO2P driver"
69 This driver supports i.MX7ULP Rapid GPIO2P controller.
72 bool "LPC32XX GPIO driver"
76 Support for the LPC32XX GPIO driver.
79 bool "Qualcomm GPIO driver"
83 Support GPIO controllers on Qualcomm Snapdragon family of SoCs.
84 This controller have single bank (default name "soc"), every
85 gpio has it's own set of registers.
86 Only simple GPIO operations are supported (get/set, change of
87 direction and checking pin function).
93 bool "Qualcomm PM8916 PMIC GPIO/keypad driver"
94 depends on DM_GPIO && PMIC_PM8916
96 Support for GPIO pins and power/reset buttons found on
98 Default name for GPIO bank is "pm8916".
99 Power and reset buttons are placed in "pm8916_key" bank and
100 have gpio numbers 0 and 1 respectively.
103 bool "PCF8575 I2C GPIO Expander driver"
104 depends on DM_GPIO && DM_I2C
106 Support for PCF8575 I2C 16-bit GPIO expander. Most of these
107 chips are from NXP and TI.
110 bool "Rockchip GPIO driver"
113 Support GPIO access on Rockchip SoCs. The GPIOs are arranged into
114 a number of banks (different for each SoC type) each with 32 GPIOs.
115 The GPIOs for a device are defined in the device tree with one node
119 bool "Enable sandbox GPIO driver"
120 depends on SANDBOX && DM && DM_GPIO
122 This driver supports some simulated GPIOs which can be adjusted
123 using 'back door' functions like sandbox_gpio_set_value(). Then the
124 GPIOs can be inspected through the normal get_get_value()
125 interface. The purpose of this is to allow GPIOs to be used as
126 normal in sandbox, perhaps with test code actually driving the
127 behaviour of those GPIOs.
129 config SANDBOX_GPIO_COUNT
130 int "Number of sandbox GPIOs"
131 depends on SANDBOX_GPIO
134 The sandbox driver can support any number of GPIOs. Generally these
135 are specified using the device tree. But you can also have a number
136 of 'anonymous' GPIOs that do not belong to any device or bank.
137 Select a suitable value depending on your needs.
140 bool "Tegra20..210 GPIO driver"
143 Support for the GPIO controller contained in NVIDIA Tegra20 through
147 bool "Tegra186 GPIO driver"
150 Support for the GPIO controller contained in NVIDIA Tegra186. This
151 covers both the "main" and "AON" controller instances, even though
152 they have slightly different register layout.
156 depends on ARCH_UNIPHIER
158 Say yes here to support UniPhier GPIOs.
161 bool "Vybrid GPIO driver"
165 Say yes here to support Vybrid vf610 GPIOs.
168 bool "Microchip PIC32 GPIO driver"
169 depends on DM_GPIO && MACH_PIC32
172 Say yes here to support Microchip PIC32 GPIOs.
175 bool "Marvell MVEBU GPIO driver"
176 depends on DM_GPIO && ARCH_MVEBU
179 Say yes here to support Marvell MVEBU (Armada XP/38x) GPIOs.
182 bool "Zynq GPIO driver"
183 depends on DM_GPIO && (ARCH_ZYNQ || ARCH_ZYNQMP)
186 Supports GPIO access on Zynq SoC.
189 bool "74x164 serial-in/parallel-out 8-bits shift register"
192 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
193 shift registers, such as 74lv165, 74hc595.
194 This driver can be used to provide access to more gpio outputs.
197 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
200 Say yes here to provide access to several register-oriented
201 SMBus I/O expanders, made mostly by NXP or TI. Compatible
204 4 bits: pca9536, pca9537
206 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
207 pca9556, pca9557, pca9574, tca6408, xra1202
209 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
214 40 bits: pca9505, pca9698
216 Now, max 24 bits chips and PCA953X compatible chips are
220 bool "Freescale MPC85XX GPIO driver"
223 This driver supports the built-in GPIO controller of MPC85XX CPUs.
224 Each GPIO bank is identified by its own entry in the device tree,
227 gpio-controller@fc00 {
229 compatible = "fsl,pq3-gpio";
233 By default, each bank is assumed to have 32 GPIOs, but the ngpios
234 setting is honored, so the number of GPIOs for each bank is
235 configurable to match the actual GPIO count of the SoC (e.g. the
236 32/32/23 banks of the P1022 SoC).
238 Aside from the standard functions of input/output mode, and output
239 value setting, the open-drain feature, which can configure individual
240 GPIOs to work as open-drain outputs, is supported.
242 The driver has been tested on MPC85XX, but it is likely that other
243 PowerQUICC III devices will work as well.