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 || \
93 This driver supports the GPIO banks on BCM6345 SoCs.
96 bool "Cortina-Access GPIO driver"
97 depends on DM_GPIO && CORTINA_PLATFORM
99 Enable support for the GPIO controller in Cortina CAxxxx SoCs.
100 This driver supports all CPU ISA variants supported by Cortina
104 bool "DWAPB GPIO driver"
105 depends on DM && DM_GPIO
107 Support for the Designware APB GPIO driver.
110 bool "AT91 PIO GPIO driver"
112 Say yes here to select AT91 PIO GPIO driver. AT91 PIO
113 controller manages up to 32 fully programmable input/output
114 lines. Each I/O line may be dedicated as a general-purpose
115 I/O or be assigned to a function of an embedded peripheral.
116 The assignment to a function of an embedded peripheral is
117 the responsibility of AT91 Pinctrl driver. This driver is
118 responsible for the general-purpose I/O.
121 bool "ATMEL PIO4 driver"
124 Say yes here to support the Atmel PIO4 driver.
125 The PIO4 is new version of Atmel PIO controller, which manages
126 up to 128 fully programmable input/output lines. Each I/O line
127 may be dedicated as a general purpose I/O or be assigned to
128 a function of an embedded peripheral.
131 bool "Aspeed GPIO Driver"
133 Say yes here to support the Aspeed GPIO driver. The controller
134 is found in the AST2400, AST2500 and AST2600 BMC SoCs and
135 provides access to over 200 GPIOs on each chip.
138 bool "DA8xx GPIO Driver"
140 This driver supports the DA8xx GPIO controller
143 bool "FXL6408 I2C GPIO expander driver"
144 depends on DM_GPIO && DM_I2C
146 This driver supports the Fairchild FXL6408 device. FXL6408 is a
147 fully configurable 8-bit I2C-controlled GPIO expander.
149 config INTEL_BROADWELL_GPIO
150 bool "Intel Broadwell GPIO driver"
153 This driver supports Broadwell U devices which have an expanded
154 GPIO feature set. The difference is large enough to merit a separate
155 driver from the common Intel ICH6 driver. It supports a total of
156 95 GPIOs which can be configured from the device tree.
159 bool "Intel generic GPIO driver"
162 Say yes here to select Intel generic GPIO driver. This controller
163 supports recent chips (e.g. Apollo Lake). It permits basic GPIO
164 control including setting pins to input/output. It makes use of its
165 parent pinctrl driver to actually effect changes.
167 config INTEL_ICH6_GPIO
168 bool "Intel ICH6 compatible legacy GPIO driver"
171 Say yes here to select Intel ICH6 compatible legacy GPIO driver.
174 bool "i.MX7ULP RGPIO2P driver"
177 This driver supports i.MX7ULP Rapid GPIO2P controller.
180 bool "Broadcom iProc GPIO driver(without pinconf)"
182 The Broadcom iProc based SoCs- Cygnus, NS2, NS3, NSP and Stingray,
183 use the same GPIO Controller IP hence this driver could be used
186 The Broadcom iProc based SoCs have multiple GPIO controllers and only
187 the always-ON GPIO controller (CRMU/AON) is supported by this driver.
189 config HSDK_CREG_GPIO
190 bool "HSDK CREG GPIO griver"
193 This driver supports CREG GPIOs on Synopsys HSDK SOC.
196 bool "Kirkwood GPIO driver"
198 This drdiver supports GPIOs on Kirkwood platforms
201 bool "LPC32XX GPIO driver"
204 Support for the LPC32XX GPIO driver.
207 bool "MAX7320 I2C GPIO Expander driver"
208 depends on DM_GPIO && DM_I2C
210 Support for MAX7320 I2C 8/16-bit GPIO expander.
211 original maxim device has 8 push/pull outputs,
212 some clones offers 16bit.
215 bool "MCP230XX GPIO driver"
218 Support for Microchip's MCP230XX I2C connected GPIO devices.
219 The following chips are supported:
225 bool "Microsemi Serial GPIO driver"
226 depends on DM_GPIO && SOC_VCOREIII
228 Support for the VCoreIII SoC serial GPIO device. By using a
229 serial interface, the SIO controller significantly extends
230 the number of available GPIOs with a minimum number of
231 additional pins on the device. The primary purpose of the
232 SIO controller is to connect control signals from SFP
233 modules and to act as an LED controller.
236 bool "Qualcomm GPIO driver"
239 Support GPIO controllers on Qualcomm Snapdragon family of SoCs.
240 This controller have single bank (default name "soc"), every
241 gpio has it's own set of registers.
242 Only simple GPIO operations are supported (get/set, change of
243 direction and checking pin function).
249 bool "Freescale/NXP MXC GPIO driver"
251 Support GPIO controllers on various i.MX platforms
254 bool "Freescale/NXP MXS GPIO driver"
256 Support GPIO controllers on i.MX23 and i.MX28 platforms
259 bool "TI OMAP GPIO driver"
260 depends on ARCH_OMAP2PLUS
263 Support GPIO controllers on the TI OMAP3/4/5 and related (such as
264 AM335x/AM43xx/AM57xx/DRA7xx/etc) families of SoCs.
267 bool "Enable the pca953x command"
269 Deprecated: This should be converted to driver model.
271 This command provides access to a pca953x GPIO device using the
272 legacy GPIO interface. Several subcommands are provided which mirror
273 the standard 'gpio' command. It should use that instead.
276 bool "Qualcomm PM8916 PMIC GPIO/keypad driver"
277 depends on DM_GPIO && PMIC_PM8916
279 Support for GPIO pins and power/reset buttons found on
280 Qualcomm PM8916 PMIC.
281 Default name for GPIO bank is "pm8916".
282 Power and reset buttons are placed in "pm8916_key" bank and
283 have gpio numbers 0 and 1 respectively.
286 bool "PCF8575 I2C GPIO Expander driver"
287 depends on DM_GPIO && DM_I2C
289 Support for PCF8575 I2C 16-bit GPIO expander. Most of these
290 chips are from NXP and TI.
293 bool "Renesas RCar GPIO driver"
294 depends on DM_GPIO && ARCH_RMOBILE
296 This driver supports the GPIO banks on Renesas RCar SoCs.
299 bool "Renesas RZ/A1 GPIO driver"
300 depends on DM_GPIO && RZA1
302 This driver supports the GPIO banks on Renesas RZ/A1 R7S72100 SoCs.
305 bool "Rockchip GPIO driver"
308 Support GPIO access on Rockchip SoCs. The GPIOs are arranged into
309 a number of banks (different for each SoC type) each with 32 GPIOs.
310 The GPIOs for a device are defined in the device tree with one node
314 bool "Enable sandbox GPIO driver"
315 depends on SANDBOX && DM && DM_GPIO
317 This driver supports some simulated GPIOs which can be adjusted
318 using 'back door' functions like sandbox_gpio_set_value(). Then the
319 GPIOs can be inspected through the normal get_get_value()
320 interface. The purpose of this is to allow GPIOs to be used as
321 normal in sandbox, perhaps with test code actually driving the
322 behaviour of those GPIOs.
324 config SANDBOX_GPIO_COUNT
325 int "Number of sandbox GPIOs"
326 depends on SANDBOX_GPIO
329 The sandbox driver can support any number of GPIOs. Generally these
330 are specified using the device tree. But you can also have a number
331 of 'anonymous' GPIOs that do not belong to any device or bank.
332 Select a suitable value depending on your needs.
335 bool "Allwinner GPIO driver"
336 depends on ARCH_SUNXI
338 Support the GPIO device in Allwinner SoCs.
341 bool "Xilinx GPIO driver"
344 This config enable the Xilinx GPIO driver for Microblaze.
347 bool "tca642x - Command to access tca642x state"
349 DEPRECATED - This needs conversion to driver model
351 This provides a way to looking at the pin state of this device.
352 This mirrors the 'gpio' command and that should be used in preference
356 bool "Tegra20..210 GPIO driver"
359 Support for the GPIO controller contained in NVIDIA Tegra20 through
363 bool "Tegra186 GPIO driver"
366 Support for the GPIO controller contained in NVIDIA Tegra186. This
367 covers both the "main" and "AON" controller instances, even though
368 they have slightly different register layout.
372 depends on ARCH_UNIPHIER
374 Say yes here to support UniPhier GPIOs.
377 bool "Vybrid GPIO driver"
380 Say yes here to support Vybrid vf610 GPIOs.
383 bool "Microchip PIC32 GPIO driver"
384 depends on DM_GPIO && MACH_PIC32
387 Say yes here to support Microchip PIC32 GPIOs.
390 bool "Octeon II/III/TX/TX2 GPIO driver"
391 depends on DM_GPIO && PCI && (ARCH_OCTEON || ARCH_OCTEONTX || ARCH_OCTEONTX2)
394 Add support for the Marvell Octeon GPIO driver. This is used with
395 various Octeon parts such as Octeon II/III and OcteonTX/TX2.
396 Octeon II/III has 32 GPIOs (count defined via DT) and OcteonTX/TX2
397 has 64 GPIOs (count defined via internal register).
400 bool "ST STM32 GPIO driver"
401 depends on DM_GPIO && (ARCH_STM32 || ARCH_STM32MP)
404 Device model driver support for STM32 GPIO controller. It should be
405 usable on many stm32 families like stm32f4/f7/h7 and stm32mp1.
409 bool "SiFive GPIO driver"
412 Device model driver for GPIO controller present in SiFive FU540 SoC. This
413 driver enables GPIO interface on HiFive Unleashed A00 board.
416 bool "Marvell MVEBU GPIO driver"
417 depends on DM_GPIO && (ARCH_MVEBU || ARCH_KIRKWOOD)
420 Say yes here to support Marvell MVEBU (Armada XP/38x) GPIOs.
423 bool "Zynq GPIO driver"
425 default y if ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL
427 Supports GPIO access on Zynq SoC.
430 bool "74x164 serial-in/parallel-out 8-bits shift register"
433 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
434 shift registers, such as 74lv165, 74hc595.
435 This driver can be used to provide access to more gpio outputs.
438 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
439 depends on DM_GPIO && DM_I2C
441 Say yes here to provide access to several register-oriented
442 SMBus I/O expanders, made mostly by NXP or TI. Compatible
445 4 bits: pca9536, pca9537
447 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
448 pca9556, pca9557, pca9574, tca6408, xra1202
450 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
455 40 bits: pca9505, pca9698
457 Now, max 24 bits chips and PCA953X compatible chips are
460 config SPL_DM_PCA953X
461 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports in SPL"
464 Say yes here to provide access to several register-oriented
465 SMBus I/O expanders, made mostly by NXP or TI. Compatible
468 4 bits: pca9536, pca9537
470 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
471 pca9556, pca9557, pca9574, tca6408, xra1202
473 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
478 40 bits: pca9505, pca9698
480 Now, max 24 bits chips and PCA953X compatible chips are
484 bool "Freescale MPC8XXX GPIO driver"
487 This driver supports the built-in GPIO controller of MPC8XXX CPUs.
488 Each GPIO bank is identified by its own entry in the device tree,
491 gpio-controller@fc00 {
493 compatible = "fsl,pq3-gpio";
497 By default, each bank is assumed to have 32 GPIOs, but the ngpios
498 setting is honored, so the number of GPIOs for each bank is
499 configurable to match the actual GPIO count of the SoC (e.g. the
500 32/32/23 banks of the P1022 SoC).
502 Aside from the standard functions of input/output mode, and output
503 value setting, the open-drain feature, which can configure individual
504 GPIOs to work as open-drain outputs, is supported.
506 config MPC83XX_SPISEL_BOOT
507 bool "Freescale MPC83XX SPISEL_BOOT driver"
508 depends on DM_GPIO && ARCH_MPC830X
510 GPIO driver to set/clear dedicated SPISEL_BOOT output on MPC83XX.
512 This pin is typically used as spi chip select to a spi nor flash.
515 bool "MediaTek MT7620 GPIO driver"
516 depends on DM_GPIO && SOC_MT7620
519 Device model driver for GPIO controller present in MediaTek MT7620
523 bool "MediaTek MT7621 GPIO driver"
524 depends on DM_GPIO && SOC_MT7628
527 Say yes here to support MediaTek MT7621 compatible GPIOs.
530 bool "Nexell GPIO driver"
533 Support GPIO access on Nexell SoCs. The GPIOs are arranged into
534 a number of banks (different for each SoC type) each with 32 GPIOs.
535 The GPIOs for a device are defined in the device tree with one node
539 bool "Nomadik GPIO driver"
542 Support GPIO access on ST-Ericsson Ux500 SoCs. The GPIOs are arranged
543 into a number of banks each with 32 GPIOs. The GPIOs for a device are
544 defined in the device tree with one node for each bank.
546 config ZYNQMP_GPIO_MODEPIN
547 bool "ZynqMP gpio modepin"
550 This config enables the ZynqMP gpio modepin driver. ZynqMP modepin
551 driver will set and get the status of PS_MODE pins. These modepins
552 are accessed using xilinx firmware. In modepin register, [3:0] bits
553 set direction, [7:4] bits read IO, [11:8] bits set/clear IO.
556 bool "Kontron sl28cpld GPIO driver"
557 depends on DM_GPIO && SL28CPLD
559 Support GPIO access on Kontron sl28cpld board management controllers.
561 config SLG7XL45106_I2C_GPO
562 bool "slg7xl45106 i2c gpo expander"
565 Support for slg7xl45106 i2c gpo expander. It is an i2c based
566 8-bit gpo expander, all gpo lines are controlled by writing
567 value into data register.