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"
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 || BCM6856 || \
114 BCM6858 || BCM63158 || BCM6855)
116 This driver supports the GPIO banks on BCM6345 SoCs.
119 bool "Cortina-Access GPIO driver"
120 depends on DM_GPIO && CORTINA_PLATFORM
122 Enable support for the GPIO controller in Cortina CAxxxx SoCs.
123 This driver supports all CPU ISA variants supported by Cortina
127 bool "DWAPB GPIO driver"
128 depends on DM && DM_GPIO
130 Support for the Designware APB GPIO driver.
133 bool "AT91 PIO GPIO driver"
135 Say yes here to select AT91 PIO GPIO driver. AT91 PIO
136 controller manages up to 32 fully programmable input/output
137 lines. Each I/O line may be dedicated as a general-purpose
138 I/O or be assigned to a function of an embedded peripheral.
139 The assignment to a function of an embedded peripheral is
140 the responsibility of AT91 Pinctrl driver. This driver is
141 responsible for the general-purpose I/O.
144 bool "ATMEL PIO4 driver"
147 Say yes here to support the Atmel PIO4 driver.
148 The PIO4 is new version of Atmel PIO controller, which manages
149 up to 128 fully programmable input/output lines. Each I/O line
150 may be dedicated as a general purpose I/O or be assigned to
151 a function of an embedded peripheral.
154 bool "Aspeed GPIO Driver"
156 Say yes here to support the Aspeed GPIO driver. The controller
157 is found in the AST2400, AST2500 and AST2600 BMC SoCs and
158 provides access to over 200 GPIOs on each chip.
161 bool "DA8xx GPIO Driver"
163 This driver supports the DA8xx GPIO controller
166 bool "FXL6408 I2C GPIO expander driver"
167 depends on DM_GPIO && DM_I2C
169 This driver supports the Fairchild FXL6408 device. FXL6408 is a
170 fully configurable 8-bit I2C-controlled GPIO expander.
173 bool "HI6220 GPIO driver"
176 config INTEL_BROADWELL_GPIO
177 bool "Intel Broadwell GPIO driver"
180 This driver supports Broadwell U devices which have an expanded
181 GPIO feature set. The difference is large enough to merit a separate
182 driver from the common Intel ICH6 driver. It supports a total of
183 95 GPIOs which can be configured from the device tree.
186 bool "Intel generic GPIO driver"
189 Say yes here to select Intel generic GPIO driver. This controller
190 supports recent chips (e.g. Apollo Lake). It permits basic GPIO
191 control including setting pins to input/output. It makes use of its
192 parent pinctrl driver to actually effect changes.
194 config INTEL_ICH6_GPIO
195 bool "Intel ICH6 compatible legacy GPIO driver"
198 Say yes here to select Intel ICH6 compatible legacy GPIO driver.
201 bool "i.MX7ULP RGPIO2P driver"
204 This driver supports i.MX7ULP Rapid GPIO2P controller.
207 bool "Broadcom iProc GPIO driver(without pinconf)"
209 The Broadcom iProc based SoCs- Cygnus, NS2, NS3, NSP and Stingray,
210 use the same GPIO Controller IP hence this driver could be used
213 The Broadcom iProc based SoCs have multiple GPIO controllers and only
214 the always-ON GPIO controller (CRMU/AON) is supported by this driver.
216 config HSDK_CREG_GPIO
217 bool "HSDK CREG GPIO griver"
220 This driver supports CREG GPIOs on Synopsys HSDK SOC.
223 bool "Kirkwood GPIO driver"
225 This drdiver supports GPIOs on Kirkwood platforms
228 bool "LPC32XX GPIO driver"
231 Support for the LPC32XX GPIO driver.
234 bool "MAX7320 I2C GPIO Expander driver"
235 depends on DM_GPIO && DM_I2C
237 Support for MAX7320 I2C 8/16-bit GPIO expander.
238 original maxim device has 8 push/pull outputs,
239 some clones offers 16bit.
242 bool "MCP230XX GPIO driver"
245 Support for Microchip's MCP230XX I2C connected GPIO devices.
246 The following chips are supported:
252 bool "Microsemi Serial GPIO driver"
253 depends on DM_GPIO && SOC_VCOREIII
255 Support for the VCoreIII SoC serial GPIO device. By using a
256 serial interface, the SIO controller significantly extends
257 the number of available GPIOs with a minimum number of
258 additional pins on the device. The primary purpose of the
259 SIO controller is to connect control signals from SFP
260 modules and to act as an LED controller.
263 bool "Qualcomm GPIO driver"
266 Support GPIO controllers on Qualcomm Snapdragon family of SoCs.
267 This controller have single bank (default name "soc"), every
268 gpio has it's own set of registers.
269 Only simple GPIO operations are supported (get/set, change of
270 direction and checking pin function).
276 bool "Freescale/NXP MXC GPIO driver"
278 Support GPIO controllers on various i.MX platforms
281 bool "Freescale/NXP MXS GPIO driver"
283 Support GPIO controllers on i.MX23 and i.MX28 platforms
286 bool "Nuvoton NPCM GPIO driver"
289 Support GPIO controllers on Nuvovon NPCM SoCs.
290 NPCM7xx/NPCM8xx contain 8 GPIO banks, each bank contains 32 pins.
293 bool "TI OMAP GPIO driver"
294 depends on ARCH_OMAP2PLUS
297 Support GPIO controllers on the TI OMAP3/4/5 and related (such as
298 AM335x/AM43xx/AM57xx/DRA7xx/etc) families of SoCs.
301 bool "Enable the pca953x command"
303 Deprecated: This should be converted to driver model.
305 This command provides access to a pca953x GPIO device using the
306 legacy GPIO interface. Several subcommands are provided which mirror
307 the standard 'gpio' command. It should use that instead.
309 config QCOM_PMIC_GPIO
310 bool "Qualcomm generic PMIC GPIO/keypad driver"
311 depends on DM_GPIO && PMIC_QCOM
313 Support for GPIO pins and power/reset buttons found on
315 Default name for GPIO bank is "pm8916".
316 Power and reset buttons are placed in "pwkey_qcom" bank and
317 have gpio numbers 0 and 1 respectively.
320 bool "PCF8575 I2C GPIO Expander driver"
321 depends on DM_GPIO && DM_I2C
323 Support for PCF8575 I2C 16-bit GPIO expander. Most of these
324 chips are from NXP and TI.
327 bool "Renesas RCar GPIO driver"
328 depends on DM_GPIO && ARCH_RMOBILE
330 This driver supports the GPIO banks on Renesas RCar SoCs.
333 bool "Renesas RZ/A1 GPIO driver"
334 depends on DM_GPIO && RZA1
336 This driver supports the GPIO banks on Renesas RZ/A1 R7S72100 SoCs.
339 bool "Rockchip GPIO driver"
342 Support GPIO access on Rockchip SoCs. The GPIOs are arranged into
343 a number of banks (different for each SoC type) each with 32 GPIOs.
344 The GPIOs for a device are defined in the device tree with one node
348 bool "Enable sandbox GPIO driver"
349 depends on SANDBOX && DM && DM_GPIO
351 This driver supports some simulated GPIOs which can be adjusted
352 using 'back door' functions like sandbox_gpio_set_value(). Then the
353 GPIOs can be inspected through the normal get_get_value()
354 interface. The purpose of this is to allow GPIOs to be used as
355 normal in sandbox, perhaps with test code actually driving the
356 behaviour of those GPIOs.
358 config SANDBOX_GPIO_COUNT
359 int "Number of sandbox GPIOs"
360 depends on SANDBOX_GPIO
363 The sandbox driver can support any number of GPIOs. Generally these
364 are specified using the device tree. But you can also have a number
365 of 'anonymous' GPIOs that do not belong to any device or bank.
366 Select a suitable value depending on your needs.
369 bool "Allwinner GPIO driver"
370 depends on ARCH_SUNXI
371 select SPL_STRTO if SPL
373 Support the GPIO device in Allwinner SoCs.
376 bool "Xilinx GPIO driver"
379 This config enable the Xilinx GPIO driver for Microblaze.
382 bool "TCA642x legacy GPIO driver"
385 bool "tca642x - Command to access tca642x state"
389 DEPRECATED - This needs conversion to driver model
391 This provides a way to looking at the pin state of this device.
392 This mirrors the 'gpio' command and that should be used in preference
396 bool "Tegra20..210 GPIO driver"
399 Support for the GPIO controller contained in NVIDIA Tegra20 through
403 bool "Tegra186 GPIO driver"
406 Support for the GPIO controller contained in NVIDIA Tegra186. This
407 covers both the "main" and "AON" controller instances, even though
408 they have slightly different register layout.
412 depends on ARCH_UNIPHIER
414 Say yes here to support UniPhier GPIOs.
417 bool "Vybrid GPIO driver"
420 Say yes here to support Vybrid vf610 GPIOs.
423 bool "Microchip PIC32 GPIO driver"
424 depends on DM_GPIO && MACH_PIC32
427 Say yes here to support Microchip PIC32 GPIOs.
430 bool "Octeon II/III/TX/TX2 GPIO driver"
431 depends on DM_GPIO && PCI && (ARCH_OCTEON || ARCH_OCTEONTX || ARCH_OCTEONTX2)
434 Add support for the Marvell Octeon GPIO driver. This is used with
435 various Octeon parts such as Octeon II/III and OcteonTX/TX2.
436 Octeon II/III has 32 GPIOs (count defined via DT) and OcteonTX/TX2
437 has 64 GPIOs (count defined via internal register).
440 bool "ST STM32 GPIO driver"
441 depends on DM_GPIO && (ARCH_STM32 || ARCH_STM32MP)
444 Device model driver support for STM32 GPIO controller. It should be
445 usable on many stm32 families like stm32f4/f7/h7 and stm32mp1.
449 bool "SiFive GPIO driver"
452 Device model driver for GPIO controller present in SiFive FU540 SoC. This
453 driver enables GPIO interface on HiFive Unleashed A00 board.
456 bool "Marvell MVEBU GPIO driver"
457 depends on DM_GPIO && (ARCH_MVEBU || ARCH_KIRKWOOD)
460 Say yes here to support Marvell MVEBU (Armada XP/38x) GPIOs.
463 bool "Zynq GPIO driver"
465 default y if ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL
467 Supports GPIO access on Zynq SoC.
470 bool "74x164 serial-in/parallel-out 8-bits shift register"
473 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
474 shift registers, such as 74lv165, 74hc595.
475 This driver can be used to provide access to more gpio outputs.
478 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
479 depends on DM_GPIO && DM_I2C
481 Say yes here to provide access to several register-oriented
482 SMBus I/O expanders, made mostly by NXP or TI. Compatible
485 4 bits: pca9536, pca9537
487 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
488 pca9556, pca9557, pca9574, tca6408, xra1202
490 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
495 40 bits: pca9505, pca9698
497 Now, max 24 bits chips and PCA953X compatible chips are
500 config SPL_DM_PCA953X
501 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports in SPL"
502 depends on SPL_DM_GPIO
504 Say yes here to provide access to several register-oriented
505 SMBus I/O expanders, made mostly by NXP or TI. Compatible
508 4 bits: pca9536, pca9537
510 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
511 pca9556, pca9557, pca9574, tca6408, xra1202
513 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
518 40 bits: pca9505, pca9698
520 Now, max 24 bits chips and PCA953X compatible chips are
524 bool "Freescale MPC8XXX GPIO driver"
527 This driver supports the built-in GPIO controller of MPC8XXX CPUs.
528 Each GPIO bank is identified by its own entry in the device tree,
531 gpio-controller@fc00 {
533 compatible = "fsl,pq3-gpio";
537 By default, each bank is assumed to have 32 GPIOs, but the ngpios
538 setting is honored, so the number of GPIOs for each bank is
539 configurable to match the actual GPIO count of the SoC (e.g. the
540 32/32/23 banks of the P1022 SoC).
542 Aside from the standard functions of input/output mode, and output
543 value setting, the open-drain feature, which can configure individual
544 GPIOs to work as open-drain outputs, is supported.
546 config MPC83XX_SPISEL_BOOT
547 bool "Freescale MPC83XX SPISEL_BOOT driver"
548 depends on DM_GPIO && ARCH_MPC830X
550 GPIO driver to set/clear dedicated SPISEL_BOOT output on MPC83XX.
552 This pin is typically used as spi chip select to a spi nor flash.
555 bool "MediaTek MT7620 GPIO driver"
556 depends on DM_GPIO && SOC_MT7620
559 Device model driver for GPIO controller present in MediaTek MT7620
563 bool "MediaTek MT7621 GPIO driver"
564 depends on DM_GPIO && (SOC_MT7621 || SOC_MT7628)
567 Say yes here to support MediaTek MT7621 compatible GPIOs.
570 bool "Nexell GPIO driver"
573 Support GPIO access on Nexell SoCs. The GPIOs are arranged into
574 a number of banks (different for each SoC type) each with 32 GPIOs.
575 The GPIOs for a device are defined in the device tree with one node
579 bool "Nomadik GPIO driver"
582 Support GPIO access on ST-Ericsson Ux500 SoCs. The GPIOs are arranged
583 into a number of banks each with 32 GPIOs. The GPIOs for a device are
584 defined in the device tree with one node for each bank.
586 config ZYNQMP_GPIO_MODEPIN
587 bool "ZynqMP gpio modepin"
590 This config enables the ZynqMP gpio modepin driver. ZynqMP modepin
591 driver will set and get the status of PS_MODE pins. These modepins
592 are accessed using xilinx firmware. In modepin register, [3:0] bits
593 set direction, [7:4] bits read IO, [11:8] bits set/clear IO.
596 bool "Kontron sl28cpld GPIO driver"
597 depends on DM_GPIO && SL28CPLD
599 Support GPIO access on Kontron sl28cpld board management controllers.
601 config SLG7XL45106_I2C_GPO
602 bool "slg7xl45106 i2c gpo expander"
605 Support for slg7xl45106 i2c gpo expander. It is an i2c based
606 8-bit gpo expander, all gpo lines are controlled by writing
607 value into data register.
609 config TURRIS_OMNIA_MCU
610 bool "Turris Omnia MCU GPIO driver"
612 default y if TARGET_TURRIS_OMNIA
614 Support for GPIOs on MCU connected to Turris Omnia via i2c.
617 bool "Faraday Technology FTGPIO010 driver"
620 Support for GPIOs on Faraday Technology's FTGPIO010 controller.
623 bool "ADP5585 GPIO driver"
624 depends on DM_GPIO && DM_I2C
626 Support ADP5585 GPIO expander.