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 Driver Model for GPIO drivers in VPL"
53 depends on DM_GPIO && VPL_DM && VPL_GPIO
56 Enable driver model for GPIO access in VPL. The standard GPIO
57 interface (gpio_get_value(), etc.) is then implemented by
58 the GPIO uclass. Drivers provide methods to query the
59 particular GPIOs that they provide. The uclass interface
60 is defined in include/asm-generic/gpio.h.
63 bool "Enable GPIO hog support"
66 Enable gpio hog support
67 The GPIO chip may contain GPIO hog definitions. GPIO hogging
68 is a mechanism providing automatic GPIO request and config-
69 uration as part of the gpio-controller's driver probe function.
72 bool "Enable GPIO hog support in SPL"
73 depends on SPL_GPIO_SUPPORT
75 Enable gpio hog support in SPL
76 The GPIO chip may contain GPIO hog definitions. GPIO hogging
77 is a mechanism providing automatic GPIO request and config-
78 uration as part of the gpio-controller's driver probe function.
80 config DM_GPIO_LOOKUP_LABEL
81 bool "Enable searching for gpio labelnames"
84 This option enables searching for gpio names in
85 the defined gpio labels, if the search for the
86 gpio bank name failed. This makes sense if you use
87 different gpios on different hardware versions
88 for the same functionality in board code.
90 config SPL_DM_GPIO_LOOKUP_LABEL
91 bool "Enable searching for gpio labelnames"
92 depends on SPL_DM_GPIO
94 This option enables searching for gpio names in
95 the defined gpio labels, if the search for the
96 gpio bank name failed. This makes sense if you use
97 different gpios on different hardware versions
98 for the same functionality in board code.
101 bool "Altera PIO driver"
104 Select this to enable PIO for Altera devices. Please find
105 details on the "Embedded Peripherals IP User Guide" of Altera.
108 bool "BCM2835 GPIO driver"
112 bool "BCM6345 GPIO driver"
113 depends on DM_GPIO && (ARCH_BMIPS || ARCH_BCM68360 || \
114 ARCH_BCM6858 || ARCH_BCM63158 || \
117 This driver supports the GPIO banks on BCM6345 SoCs.
120 bool "Cortina-Access GPIO driver"
121 depends on DM_GPIO && CORTINA_PLATFORM
123 Enable support for the GPIO controller in Cortina CAxxxx SoCs.
124 This driver supports all CPU ISA variants supported by Cortina
128 bool "DWAPB GPIO driver"
129 depends on DM && DM_GPIO
131 Support for the Designware APB GPIO driver.
134 bool "AT91 PIO GPIO driver"
136 Say yes here to select AT91 PIO GPIO driver. AT91 PIO
137 controller manages up to 32 fully programmable input/output
138 lines. Each I/O line may be dedicated as a general-purpose
139 I/O or be assigned to a function of an embedded peripheral.
140 The assignment to a function of an embedded peripheral is
141 the responsibility of AT91 Pinctrl driver. This driver is
142 responsible for the general-purpose I/O.
145 bool "ATMEL PIO4 driver"
148 Say yes here to support the Atmel PIO4 driver.
149 The PIO4 is new version of Atmel PIO controller, which manages
150 up to 128 fully programmable input/output lines. Each I/O line
151 may be dedicated as a general purpose I/O or be assigned to
152 a function of an embedded peripheral.
155 bool "Aspeed GPIO Driver"
157 Say yes here to support the Aspeed GPIO driver. The controller
158 is found in the AST2400, AST2500 and AST2600 BMC SoCs and
159 provides access to over 200 GPIOs on each chip.
162 bool "DA8xx GPIO Driver"
164 This driver supports the DA8xx GPIO controller
167 bool "FXL6408 I2C GPIO expander driver"
168 depends on DM_GPIO && DM_I2C
170 This driver supports the Fairchild FXL6408 device. FXL6408 is a
171 fully configurable 8-bit I2C-controlled GPIO expander.
173 config INTEL_BROADWELL_GPIO
174 bool "Intel Broadwell GPIO driver"
177 This driver supports Broadwell U devices which have an expanded
178 GPIO feature set. The difference is large enough to merit a separate
179 driver from the common Intel ICH6 driver. It supports a total of
180 95 GPIOs which can be configured from the device tree.
183 bool "Intel generic GPIO driver"
186 Say yes here to select Intel generic GPIO driver. This controller
187 supports recent chips (e.g. Apollo Lake). It permits basic GPIO
188 control including setting pins to input/output. It makes use of its
189 parent pinctrl driver to actually effect changes.
191 config INTEL_ICH6_GPIO
192 bool "Intel ICH6 compatible legacy GPIO driver"
195 Say yes here to select Intel ICH6 compatible legacy GPIO driver.
198 bool "i.MX7ULP RGPIO2P driver"
201 This driver supports i.MX7ULP Rapid GPIO2P controller.
204 bool "Broadcom iProc GPIO driver(without pinconf)"
206 The Broadcom iProc based SoCs- Cygnus, NS2, NS3, NSP and Stingray,
207 use the same GPIO Controller IP hence this driver could be used
210 The Broadcom iProc based SoCs have multiple GPIO controllers and only
211 the always-ON GPIO controller (CRMU/AON) is supported by this driver.
213 config HSDK_CREG_GPIO
214 bool "HSDK CREG GPIO griver"
217 This driver supports CREG GPIOs on Synopsys HSDK SOC.
220 bool "Kirkwood GPIO driver"
222 This drdiver supports GPIOs on Kirkwood platforms
225 bool "LPC32XX GPIO driver"
228 Support for the LPC32XX GPIO driver.
231 bool "MAX7320 I2C GPIO Expander driver"
232 depends on DM_GPIO && DM_I2C
234 Support for MAX7320 I2C 8/16-bit GPIO expander.
235 original maxim device has 8 push/pull outputs,
236 some clones offers 16bit.
239 bool "MCP230XX GPIO driver"
242 Support for Microchip's MCP230XX I2C connected GPIO devices.
243 The following chips are supported:
249 bool "Microsemi Serial GPIO driver"
250 depends on DM_GPIO && SOC_VCOREIII
252 Support for the VCoreIII SoC serial GPIO device. By using a
253 serial interface, the SIO controller significantly extends
254 the number of available GPIOs with a minimum number of
255 additional pins on the device. The primary purpose of the
256 SIO controller is to connect control signals from SFP
257 modules and to act as an LED controller.
260 bool "Qualcomm GPIO driver"
263 Support GPIO controllers on Qualcomm Snapdragon family of SoCs.
264 This controller have single bank (default name "soc"), every
265 gpio has it's own set of registers.
266 Only simple GPIO operations are supported (get/set, change of
267 direction and checking pin function).
273 bool "Freescale/NXP MXC GPIO driver"
275 Support GPIO controllers on various i.MX platforms
278 bool "Freescale/NXP MXS GPIO driver"
280 Support GPIO controllers on i.MX23 and i.MX28 platforms
283 bool "Nuvoton NPCM GPIO driver"
286 Support GPIO controllers on Nuvovon NPCM SoCs.
287 NPCM7xx/NPCM8xx contain 8 GPIO banks, each bank contains 32 pins.
290 bool "TI OMAP GPIO driver"
291 depends on ARCH_OMAP2PLUS
294 Support GPIO controllers on the TI OMAP3/4/5 and related (such as
295 AM335x/AM43xx/AM57xx/DRA7xx/etc) families of SoCs.
298 bool "Enable the pca953x command"
300 Deprecated: This should be converted to driver model.
302 This command provides access to a pca953x GPIO device using the
303 legacy GPIO interface. Several subcommands are provided which mirror
304 the standard 'gpio' command. It should use that instead.
307 bool "Qualcomm PM8916 PMIC GPIO/keypad driver"
308 depends on DM_GPIO && PMIC_PM8916
310 Support for GPIO pins and power/reset buttons found on
311 Qualcomm PM8916 PMIC.
312 Default name for GPIO bank is "pm8916".
313 Power and reset buttons are placed in "pm8916_key" bank and
314 have gpio numbers 0 and 1 respectively.
317 bool "PCF8575 I2C GPIO Expander driver"
318 depends on DM_GPIO && DM_I2C
320 Support for PCF8575 I2C 16-bit GPIO expander. Most of these
321 chips are from NXP and TI.
324 bool "Renesas RCar GPIO driver"
325 depends on DM_GPIO && ARCH_RMOBILE
327 This driver supports the GPIO banks on Renesas RCar SoCs.
330 bool "Renesas RZ/A1 GPIO driver"
331 depends on DM_GPIO && RZA1
333 This driver supports the GPIO banks on Renesas RZ/A1 R7S72100 SoCs.
336 bool "Rockchip GPIO driver"
339 Support GPIO access on Rockchip SoCs. The GPIOs are arranged into
340 a number of banks (different for each SoC type) each with 32 GPIOs.
341 The GPIOs for a device are defined in the device tree with one node
345 bool "Enable sandbox GPIO driver"
346 depends on SANDBOX && DM && DM_GPIO
348 This driver supports some simulated GPIOs which can be adjusted
349 using 'back door' functions like sandbox_gpio_set_value(). Then the
350 GPIOs can be inspected through the normal get_get_value()
351 interface. The purpose of this is to allow GPIOs to be used as
352 normal in sandbox, perhaps with test code actually driving the
353 behaviour of those GPIOs.
355 config SANDBOX_GPIO_COUNT
356 int "Number of sandbox GPIOs"
357 depends on SANDBOX_GPIO
360 The sandbox driver can support any number of GPIOs. Generally these
361 are specified using the device tree. But you can also have a number
362 of 'anonymous' GPIOs that do not belong to any device or bank.
363 Select a suitable value depending on your needs.
366 bool "Allwinner GPIO driver"
367 depends on ARCH_SUNXI
368 select SPL_STRTO if SPL
370 Support the GPIO device in Allwinner SoCs.
373 bool "Xilinx GPIO driver"
376 This config enable the Xilinx GPIO driver for Microblaze.
379 bool "tca642x - Command to access tca642x state"
381 DEPRECATED - This needs conversion to driver model
383 This provides a way to looking at the pin state of this device.
384 This mirrors the 'gpio' command and that should be used in preference
388 bool "Tegra20..210 GPIO driver"
391 Support for the GPIO controller contained in NVIDIA Tegra20 through
395 bool "Tegra186 GPIO driver"
398 Support for the GPIO controller contained in NVIDIA Tegra186. This
399 covers both the "main" and "AON" controller instances, even though
400 they have slightly different register layout.
404 depends on ARCH_UNIPHIER
406 Say yes here to support UniPhier GPIOs.
409 bool "Vybrid GPIO driver"
412 Say yes here to support Vybrid vf610 GPIOs.
415 bool "Microchip PIC32 GPIO driver"
416 depends on DM_GPIO && MACH_PIC32
419 Say yes here to support Microchip PIC32 GPIOs.
422 bool "Octeon II/III/TX/TX2 GPIO driver"
423 depends on DM_GPIO && PCI && (ARCH_OCTEON || ARCH_OCTEONTX || ARCH_OCTEONTX2)
426 Add support for the Marvell Octeon GPIO driver. This is used with
427 various Octeon parts such as Octeon II/III and OcteonTX/TX2.
428 Octeon II/III has 32 GPIOs (count defined via DT) and OcteonTX/TX2
429 has 64 GPIOs (count defined via internal register).
432 bool "ST STM32 GPIO driver"
433 depends on DM_GPIO && (ARCH_STM32 || ARCH_STM32MP)
436 Device model driver support for STM32 GPIO controller. It should be
437 usable on many stm32 families like stm32f4/f7/h7 and stm32mp1.
441 bool "SiFive GPIO driver"
444 Device model driver for GPIO controller present in SiFive FU540 SoC. This
445 driver enables GPIO interface on HiFive Unleashed A00 board.
448 bool "Marvell MVEBU GPIO driver"
449 depends on DM_GPIO && (ARCH_MVEBU || ARCH_KIRKWOOD)
452 Say yes here to support Marvell MVEBU (Armada XP/38x) GPIOs.
455 bool "Zynq GPIO driver"
457 default y if ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL
459 Supports GPIO access on Zynq SoC.
462 bool "74x164 serial-in/parallel-out 8-bits shift register"
465 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
466 shift registers, such as 74lv165, 74hc595.
467 This driver can be used to provide access to more gpio outputs.
470 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
471 depends on DM_GPIO && DM_I2C
473 Say yes here to provide access to several register-oriented
474 SMBus I/O expanders, made mostly by NXP or TI. Compatible
477 4 bits: pca9536, pca9537
479 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
480 pca9556, pca9557, pca9574, tca6408, xra1202
482 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
487 40 bits: pca9505, pca9698
489 Now, max 24 bits chips and PCA953X compatible chips are
492 config SPL_DM_PCA953X
493 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports in SPL"
494 depends on SPL_DM_GPIO
496 Say yes here to provide access to several register-oriented
497 SMBus I/O expanders, made mostly by NXP or TI. Compatible
500 4 bits: pca9536, pca9537
502 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
503 pca9556, pca9557, pca9574, tca6408, xra1202
505 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
510 40 bits: pca9505, pca9698
512 Now, max 24 bits chips and PCA953X compatible chips are
516 bool "Freescale MPC8XXX GPIO driver"
519 This driver supports the built-in GPIO controller of MPC8XXX CPUs.
520 Each GPIO bank is identified by its own entry in the device tree,
523 gpio-controller@fc00 {
525 compatible = "fsl,pq3-gpio";
529 By default, each bank is assumed to have 32 GPIOs, but the ngpios
530 setting is honored, so the number of GPIOs for each bank is
531 configurable to match the actual GPIO count of the SoC (e.g. the
532 32/32/23 banks of the P1022 SoC).
534 Aside from the standard functions of input/output mode, and output
535 value setting, the open-drain feature, which can configure individual
536 GPIOs to work as open-drain outputs, is supported.
538 config MPC83XX_SPISEL_BOOT
539 bool "Freescale MPC83XX SPISEL_BOOT driver"
540 depends on DM_GPIO && ARCH_MPC830X
542 GPIO driver to set/clear dedicated SPISEL_BOOT output on MPC83XX.
544 This pin is typically used as spi chip select to a spi nor flash.
547 bool "MediaTek MT7620 GPIO driver"
548 depends on DM_GPIO && SOC_MT7620
551 Device model driver for GPIO controller present in MediaTek MT7620
555 bool "MediaTek MT7621 GPIO driver"
556 depends on DM_GPIO && (SOC_MT7621 || SOC_MT7628)
559 Say yes here to support MediaTek MT7621 compatible GPIOs.
562 bool "Nexell GPIO driver"
565 Support GPIO access on Nexell SoCs. The GPIOs are arranged into
566 a number of banks (different for each SoC type) each with 32 GPIOs.
567 The GPIOs for a device are defined in the device tree with one node
571 bool "Nomadik GPIO driver"
574 Support GPIO access on ST-Ericsson Ux500 SoCs. The GPIOs are arranged
575 into a number of banks each with 32 GPIOs. The GPIOs for a device are
576 defined in the device tree with one node for each bank.
578 config ZYNQMP_GPIO_MODEPIN
579 bool "ZynqMP gpio modepin"
582 This config enables the ZynqMP gpio modepin driver. ZynqMP modepin
583 driver will set and get the status of PS_MODE pins. These modepins
584 are accessed using xilinx firmware. In modepin register, [3:0] bits
585 set direction, [7:4] bits read IO, [11:8] bits set/clear IO.
588 bool "Kontron sl28cpld GPIO driver"
589 depends on DM_GPIO && SL28CPLD
591 Support GPIO access on Kontron sl28cpld board management controllers.
593 config SLG7XL45106_I2C_GPO
594 bool "slg7xl45106 i2c gpo expander"
597 Support for slg7xl45106 i2c gpo expander. It is an i2c based
598 8-bit gpo expander, all gpo lines are controlled by writing
599 value into data register.
601 config TURRIS_OMNIA_MCU
602 bool "Turris Omnia MCU GPIO driver"
604 default y if TARGET_TURRIS_OMNIA
606 Support for GPIOs on MCU connected to Turris Omnia via i2c.