2 # GPIO infrastructure and drivers
9 Enable support for GPIOs (General-purpose Input/Output) in U-Boot.
10 GPIOs allow U-Boot to read the state of an input line (high or
11 low) and set the state of an output line. This can be used to
12 drive LEDs, control power to various system parts and read user
13 input. GPIOs can be useful to enable a 'sign-of-life' LED,
14 for example. Enable this option to build the drivers in
15 drivers/gpio as part of an U-Boot build.
20 bool "Enable Driver Model for GPIO drivers"
23 Enable driver model for GPIO access. The standard GPIO
24 interface (gpio_get_value(), etc.) is then implemented by
25 the GPIO uclass. Drivers provide methods to query the
26 particular GPIOs that they provide. The uclass interface
27 is defined in include/asm-generic/gpio.h.
30 bool "Enable Driver Model for GPIO drivers in SPL"
31 depends on DM_GPIO && SPL_DM && SPL_GPIO
34 Enable driver model for GPIO access in SPL. The standard GPIO
35 interface (gpio_get_value(), etc.) is then implemented by
36 the GPIO uclass. Drivers provide methods to query the
37 particular GPIOs that they provide. The uclass interface
38 is defined in include/asm-generic/gpio.h.
41 bool "Enable Driver Model for GPIO drivers in TPL"
42 depends on DM_GPIO && TPL_DM && TPL_GPIO
45 Enable driver model for GPIO access in TPL. The standard GPIO
46 interface (gpio_get_value(), etc.) is then implemented by
47 the GPIO uclass. Drivers provide methods to query the
48 particular GPIOs that they provide. The uclass interface
49 is defined in include/asm-generic/gpio.h.
52 bool "Enable GPIO hog support"
55 Enable gpio hog support
56 The GPIO chip may contain GPIO hog definitions. GPIO hogging
57 is a mechanism providing automatic GPIO request and config-
58 uration as part of the gpio-controller's driver probe function.
60 config DM_GPIO_LOOKUP_LABEL
61 bool "Enable searching for gpio labelnames"
64 This option enables searching for gpio names in
65 the defined gpio labels, if the search for the
66 gpio bank name failed. This makes sense if you use
67 different gpios on different hardware versions
68 for the same functionality in board code.
70 config SPL_DM_GPIO_LOOKUP_LABEL
71 bool "Enable searching for gpio labelnames"
72 depends on DM_GPIO && SPL_DM && SPL_GPIO
74 This option enables searching for gpio names in
75 the defined gpio labels, if the search for the
76 gpio bank name failed. This makes sense if you use
77 different gpios on different hardware versions
78 for the same functionality in board code.
81 bool "Altera PIO driver"
84 Select this to enable PIO for Altera devices. Please find
85 details on the "Embedded Peripherals IP User Guide" of Altera.
88 bool "BCM6345 GPIO driver"
89 depends on DM_GPIO && (ARCH_BMIPS || ARCH_BCM68360 || \
90 ARCH_BCM6858 || ARCH_BCM63158)
92 This driver supports the GPIO banks on BCM6345 SoCs.
95 bool "Cortina-Access GPIO driver"
96 depends on DM_GPIO && CORTINA_PLATFORM
98 Enable support for the GPIO controller in Cortina CAxxxx SoCs.
99 This driver supports all CPU ISA variants supported by Cortina
103 bool "DWAPB GPIO driver"
104 depends on DM && DM_GPIO
106 Support for the Designware APB GPIO driver.
109 bool "AT91 PIO GPIO driver"
111 Say yes here to select AT91 PIO GPIO driver. AT91 PIO
112 controller manages up to 32 fully programmable input/output
113 lines. Each I/O line may be dedicated as a general-purpose
114 I/O or be assigned to a function of an embedded peripheral.
115 The assignment to a function of an embedded peripheral is
116 the responsibility of AT91 Pinctrl driver. This driver is
117 responsible for the general-purpose I/O.
120 bool "ATMEL PIO4 driver"
123 Say yes here to support the Atmel PIO4 driver.
124 The PIO4 is new version of Atmel PIO controller, which manages
125 up to 128 fully programmable input/output lines. Each I/O line
126 may be dedicated as a general purpose I/O or be assigned to
127 a function of an embedded peripheral.
130 bool "DA8xx GPIO Driver"
132 This driver supports the DA8xx GPIO controller
134 config INTEL_BROADWELL_GPIO
135 bool "Intel Broadwell GPIO driver"
138 This driver supports Broadwell U devices which have an expanded
139 GPIO feature set. The difference is large enough to merit a separate
140 driver from the common Intel ICH6 driver. It supports a total of
141 95 GPIOs which can be configured from the device tree.
144 bool "Intel generic GPIO driver"
147 Say yes here to select Intel generic GPIO driver. This controller
148 supports recent chips (e.g. Apollo Lake). It permits basic GPIO
149 control including setting pins to input/output. It makes use of its
150 parent pinctrl driver to actually effect changes.
152 config INTEL_ICH6_GPIO
153 bool "Intel ICH6 compatible legacy GPIO driver"
156 Say yes here to select Intel ICH6 compatible legacy GPIO driver.
159 bool "i.MX7ULP RGPIO2P driver"
162 This driver supports i.MX7ULP Rapid GPIO2P controller.
165 bool "Broadcom iProc GPIO driver(without pinconf)"
167 The Broadcom iProc based SoCs- Cygnus, NS2, NS3, NSP and Stingray,
168 use the same GPIO Controller IP hence this driver could be used
171 The Broadcom iProc based SoCs have multiple GPIO controllers and only
172 the always-ON GPIO controller (CRMU/AON) is supported by this driver.
174 config HSDK_CREG_GPIO
175 bool "HSDK CREG GPIO griver"
178 This driver supports CREG GPIOs on Synopsys HSDK SOC.
181 bool "LPC32XX GPIO driver"
184 Support for the LPC32XX GPIO driver.
187 bool "MCP230XX GPIO driver"
190 Support for Microchip's MCP230XX I2C connected GPIO devices.
191 The following chips are supported:
197 bool "Microsemi Serial GPIO driver"
198 depends on DM_GPIO && SOC_VCOREIII
200 Support for the VCoreIII SoC serial GPIO device. By using a
201 serial interface, the SIO controller significantly extends
202 the number of available GPIOs with a minimum number of
203 additional pins on the device. The primary purpose of the
204 SIO controller is to connect control signals from SFP
205 modules and to act as an LED controller.
208 bool "Qualcomm GPIO driver"
211 Support GPIO controllers on Qualcomm Snapdragon family of SoCs.
212 This controller have single bank (default name "soc"), every
213 gpio has it's own set of registers.
214 Only simple GPIO operations are supported (get/set, change of
215 direction and checking pin function).
221 bool "Freescale/NXP MXC GPIO driver"
223 Support GPIO controllers on various i.MX platforms
226 bool "Freescale/NXP MXS GPIO driver"
228 Support GPIO controllers on i.MX23 and i.MX28 platforms
231 bool "TI OMAP GPIO driver"
232 depends on ARCH_OMAP2PLUS
235 Support GPIO controllers on the TI OMAP3/4/5 and related (such as
236 AM335x/AM43xx/AM57xx/DRA7xx/etc) families of SoCs.
239 bool "Enable the pca953x command"
241 Deprecated: This should be converted to driver model.
243 This command provides access to a pca953x GPIO device using the
244 legacy GPIO interface. Several subcommands are provided which mirror
245 the standard 'gpio' command. It should use that instead.
248 bool "Qualcomm PM8916 PMIC GPIO/keypad driver"
249 depends on DM_GPIO && PMIC_PM8916
251 Support for GPIO pins and power/reset buttons found on
252 Qualcomm PM8916 PMIC.
253 Default name for GPIO bank is "pm8916".
254 Power and reset buttons are placed in "pm8916_key" bank and
255 have gpio numbers 0 and 1 respectively.
258 bool "PCF8575 I2C GPIO Expander driver"
259 depends on DM_GPIO && DM_I2C
261 Support for PCF8575 I2C 16-bit GPIO expander. Most of these
262 chips are from NXP and TI.
265 bool "Renesas RCar GPIO driver"
266 depends on DM_GPIO && ARCH_RMOBILE
268 This driver supports the GPIO banks on Renesas RCar SoCs.
271 bool "Renesas RZ/A1 GPIO driver"
272 depends on DM_GPIO && RZA1
274 This driver supports the GPIO banks on Renesas RZ/A1 R7S72100 SoCs.
277 bool "Rockchip GPIO driver"
280 Support GPIO access on Rockchip SoCs. The GPIOs are arranged into
281 a number of banks (different for each SoC type) each with 32 GPIOs.
282 The GPIOs for a device are defined in the device tree with one node
286 bool "Enable sandbox GPIO driver"
287 depends on SANDBOX && DM && DM_GPIO
289 This driver supports some simulated GPIOs which can be adjusted
290 using 'back door' functions like sandbox_gpio_set_value(). Then the
291 GPIOs can be inspected through the normal get_get_value()
292 interface. The purpose of this is to allow GPIOs to be used as
293 normal in sandbox, perhaps with test code actually driving the
294 behaviour of those GPIOs.
296 config SANDBOX_GPIO_COUNT
297 int "Number of sandbox GPIOs"
298 depends on SANDBOX_GPIO
301 The sandbox driver can support any number of GPIOs. Generally these
302 are specified using the device tree. But you can also have a number
303 of 'anonymous' GPIOs that do not belong to any device or bank.
304 Select a suitable value depending on your needs.
307 bool "Allwinner GPIO driver"
308 depends on ARCH_SUNXI
310 Support the GPIO device in Allwinner SoCs.
313 bool "Xilinx GPIO driver"
316 This config enable the Xilinx GPIO driver for Microblaze.
319 bool "tca642x - Command to access tca642x state"
321 DEPRECATED - This needs conversion to driver model
323 This provides a way to looking at the pin state of this device.
324 This mirrors the 'gpio' command and that should be used in preference
328 bool "Tegra20..210 GPIO driver"
331 Support for the GPIO controller contained in NVIDIA Tegra20 through
335 bool "Tegra186 GPIO driver"
338 Support for the GPIO controller contained in NVIDIA Tegra186. This
339 covers both the "main" and "AON" controller instances, even though
340 they have slightly different register layout.
344 depends on ARCH_UNIPHIER
346 Say yes here to support UniPhier GPIOs.
349 bool "Vybrid GPIO driver"
352 Say yes here to support Vybrid vf610 GPIOs.
355 bool "Microchip PIC32 GPIO driver"
356 depends on DM_GPIO && MACH_PIC32
359 Say yes here to support Microchip PIC32 GPIOs.
362 bool "Octeon II/III/TX/TX2 GPIO driver"
363 depends on DM_GPIO && PCI && (ARCH_OCTEON || ARCH_OCTEONTX || ARCH_OCTEONTX2)
366 Add support for the Marvell Octeon GPIO driver. This is used with
367 various Octeon parts such as Octeon II/III and OcteonTX/TX2.
368 Octeon II/III has 32 GPIOs (count defined via DT) and OcteonTX/TX2
369 has 64 GPIOs (count defined via internal register).
372 bool "ST STM32 GPIO driver"
373 depends on DM_GPIO && (ARCH_STM32 || ARCH_STM32MP)
376 Device model driver support for STM32 GPIO controller. It should be
377 usable on many stm32 families like stm32f4/f7/h7 and stm32mp1.
381 bool "SiFive GPIO driver"
384 Device model driver for GPIO controller present in SiFive FU540 SoC. This
385 driver enables GPIO interface on HiFive Unleashed A00 board.
388 bool "Marvell MVEBU GPIO driver"
389 depends on DM_GPIO && (ARCH_MVEBU || ARCH_KIRKWOOD)
392 Say yes here to support Marvell MVEBU (Armada XP/38x) GPIOs.
395 bool "Zynq GPIO driver"
397 default y if ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL
399 Supports GPIO access on Zynq SoC.
402 bool "74x164 serial-in/parallel-out 8-bits shift register"
405 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
406 shift registers, such as 74lv165, 74hc595.
407 This driver can be used to provide access to more gpio outputs.
410 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
411 depends on DM_GPIO && DM_I2C
413 Say yes here to provide access to several register-oriented
414 SMBus I/O expanders, made mostly by NXP or TI. Compatible
417 4 bits: pca9536, pca9537
419 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
420 pca9556, pca9557, pca9574, tca6408, xra1202
422 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
427 40 bits: pca9505, pca9698
429 Now, max 24 bits chips and PCA953X compatible chips are
432 config SPL_DM_PCA953X
433 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports in SPL"
436 Say yes here to provide access to several register-oriented
437 SMBus I/O expanders, made mostly by NXP or TI. Compatible
440 4 bits: pca9536, pca9537
442 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
443 pca9556, pca9557, pca9574, tca6408, xra1202
445 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
450 40 bits: pca9505, pca9698
452 Now, max 24 bits chips and PCA953X compatible chips are
456 bool "Freescale MPC8XXX GPIO driver"
459 This driver supports the built-in GPIO controller of MPC8XXX CPUs.
460 Each GPIO bank is identified by its own entry in the device tree,
463 gpio-controller@fc00 {
465 compatible = "fsl,pq3-gpio";
469 By default, each bank is assumed to have 32 GPIOs, but the ngpios
470 setting is honored, so the number of GPIOs for each bank is
471 configurable to match the actual GPIO count of the SoC (e.g. the
472 32/32/23 banks of the P1022 SoC).
474 Aside from the standard functions of input/output mode, and output
475 value setting, the open-drain feature, which can configure individual
476 GPIOs to work as open-drain outputs, is supported.
478 config MPC83XX_SPISEL_BOOT
479 bool "Freescale MPC83XX SPISEL_BOOT driver"
480 depends on DM_GPIO && ARCH_MPC830X
482 GPIO driver to set/clear dedicated SPISEL_BOOT output on MPC83XX.
484 This pin is typically used as spi chip select to a spi nor flash.
487 bool "MediaTek MT7620 GPIO driver"
488 depends on DM_GPIO && SOC_MT7620
491 Device model driver for GPIO controller present in MediaTek MT7620
495 bool "MediaTek MT7621 GPIO driver"
496 depends on DM_GPIO && SOC_MT7628
499 Say yes here to support MediaTek MT7621 compatible GPIOs.
502 bool "Nexell GPIO driver"
505 Support GPIO access on Nexell SoCs. The GPIOs are arranged into
506 a number of banks (different for each SoC type) each with 32 GPIOs.
507 The GPIOs for a device are defined in the device tree with one node
511 bool "Nomadik GPIO driver"
514 Support GPIO access on ST-Ericsson Ux500 SoCs. The GPIOs are arranged
515 into a number of banks each with 32 GPIOs. The GPIOs for a device are
516 defined in the device tree with one node for each bank.