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.
172 config INTEL_BROADWELL_GPIO
173 bool "Intel Broadwell GPIO driver"
176 This driver supports Broadwell U devices which have an expanded
177 GPIO feature set. The difference is large enough to merit a separate
178 driver from the common Intel ICH6 driver. It supports a total of
179 95 GPIOs which can be configured from the device tree.
182 bool "Intel generic GPIO driver"
185 Say yes here to select Intel generic GPIO driver. This controller
186 supports recent chips (e.g. Apollo Lake). It permits basic GPIO
187 control including setting pins to input/output. It makes use of its
188 parent pinctrl driver to actually effect changes.
190 config INTEL_ICH6_GPIO
191 bool "Intel ICH6 compatible legacy GPIO driver"
194 Say yes here to select Intel ICH6 compatible legacy GPIO driver.
197 bool "i.MX7ULP RGPIO2P driver"
200 This driver supports i.MX7ULP Rapid GPIO2P controller.
203 bool "Broadcom iProc GPIO driver(without pinconf)"
205 The Broadcom iProc based SoCs- Cygnus, NS2, NS3, NSP and Stingray,
206 use the same GPIO Controller IP hence this driver could be used
209 The Broadcom iProc based SoCs have multiple GPIO controllers and only
210 the always-ON GPIO controller (CRMU/AON) is supported by this driver.
212 config HSDK_CREG_GPIO
213 bool "HSDK CREG GPIO griver"
216 This driver supports CREG GPIOs on Synopsys HSDK SOC.
219 bool "Kirkwood GPIO driver"
221 This drdiver supports GPIOs on Kirkwood platforms
224 bool "LPC32XX GPIO driver"
227 Support for the LPC32XX GPIO driver.
230 bool "MAX7320 I2C GPIO Expander driver"
231 depends on DM_GPIO && DM_I2C
233 Support for MAX7320 I2C 8/16-bit GPIO expander.
234 original maxim device has 8 push/pull outputs,
235 some clones offers 16bit.
238 bool "MCP230XX GPIO driver"
241 Support for Microchip's MCP230XX I2C connected GPIO devices.
242 The following chips are supported:
248 bool "Microsemi Serial GPIO driver"
249 depends on DM_GPIO && SOC_VCOREIII
251 Support for the VCoreIII SoC serial GPIO device. By using a
252 serial interface, the SIO controller significantly extends
253 the number of available GPIOs with a minimum number of
254 additional pins on the device. The primary purpose of the
255 SIO controller is to connect control signals from SFP
256 modules and to act as an LED controller.
259 bool "Qualcomm GPIO driver"
262 Support GPIO controllers on Qualcomm Snapdragon family of SoCs.
263 This controller have single bank (default name "soc"), every
264 gpio has it's own set of registers.
265 Only simple GPIO operations are supported (get/set, change of
266 direction and checking pin function).
272 bool "Freescale/NXP MXC GPIO driver"
274 Support GPIO controllers on various i.MX platforms
277 bool "Freescale/NXP MXS GPIO driver"
279 Support GPIO controllers on i.MX23 and i.MX28 platforms
282 bool "Nuvoton NPCM GPIO driver"
285 Support GPIO controllers on Nuvovon NPCM SoCs.
286 NPCM7xx/NPCM8xx contain 8 GPIO banks, each bank contains 32 pins.
289 bool "TI OMAP GPIO driver"
290 depends on ARCH_OMAP2PLUS
293 Support GPIO controllers on the TI OMAP3/4/5 and related (such as
294 AM335x/AM43xx/AM57xx/DRA7xx/etc) families of SoCs.
297 bool "Enable the pca953x command"
299 Deprecated: This should be converted to driver model.
301 This command provides access to a pca953x GPIO device using the
302 legacy GPIO interface. Several subcommands are provided which mirror
303 the standard 'gpio' command. It should use that instead.
305 config QCOM_PMIC_GPIO
306 bool "Qualcomm generic PMIC GPIO/keypad driver"
307 depends on DM_GPIO && PMIC_QCOM
309 Support for GPIO pins and power/reset buttons found on
311 Default name for GPIO bank is "pm8916".
312 Power and reset buttons are placed in "pwkey_qcom" bank and
313 have gpio numbers 0 and 1 respectively.
316 bool "PCF8575 I2C GPIO Expander driver"
317 depends on DM_GPIO && DM_I2C
319 Support for PCF8575 I2C 16-bit GPIO expander. Most of these
320 chips are from NXP and TI.
323 bool "Renesas RCar GPIO driver"
324 depends on DM_GPIO && ARCH_RMOBILE
326 This driver supports the GPIO banks on Renesas RCar SoCs.
329 bool "Renesas RZ/A1 GPIO driver"
330 depends on DM_GPIO && RZA1
332 This driver supports the GPIO banks on Renesas RZ/A1 R7S72100 SoCs.
335 bool "Rockchip GPIO driver"
338 Support GPIO access on Rockchip SoCs. The GPIOs are arranged into
339 a number of banks (different for each SoC type) each with 32 GPIOs.
340 The GPIOs for a device are defined in the device tree with one node
344 bool "Enable sandbox GPIO driver"
345 depends on SANDBOX && DM && DM_GPIO
347 This driver supports some simulated GPIOs which can be adjusted
348 using 'back door' functions like sandbox_gpio_set_value(). Then the
349 GPIOs can be inspected through the normal get_get_value()
350 interface. The purpose of this is to allow GPIOs to be used as
351 normal in sandbox, perhaps with test code actually driving the
352 behaviour of those GPIOs.
354 config SANDBOX_GPIO_COUNT
355 int "Number of sandbox GPIOs"
356 depends on SANDBOX_GPIO
359 The sandbox driver can support any number of GPIOs. Generally these
360 are specified using the device tree. But you can also have a number
361 of 'anonymous' GPIOs that do not belong to any device or bank.
362 Select a suitable value depending on your needs.
365 bool "Allwinner GPIO driver"
366 depends on ARCH_SUNXI
367 select SPL_STRTO if SPL
369 Support the GPIO device in Allwinner SoCs.
372 bool "Xilinx GPIO driver"
375 This config enable the Xilinx GPIO driver for Microblaze.
378 bool "tca642x - Command to access tca642x state"
380 DEPRECATED - This needs conversion to driver model
382 This provides a way to looking at the pin state of this device.
383 This mirrors the 'gpio' command and that should be used in preference
387 bool "Tegra20..210 GPIO driver"
390 Support for the GPIO controller contained in NVIDIA Tegra20 through
394 bool "Tegra186 GPIO driver"
397 Support for the GPIO controller contained in NVIDIA Tegra186. This
398 covers both the "main" and "AON" controller instances, even though
399 they have slightly different register layout.
403 depends on ARCH_UNIPHIER
405 Say yes here to support UniPhier GPIOs.
408 bool "Vybrid GPIO driver"
411 Say yes here to support Vybrid vf610 GPIOs.
414 bool "Microchip PIC32 GPIO driver"
415 depends on DM_GPIO && MACH_PIC32
418 Say yes here to support Microchip PIC32 GPIOs.
421 bool "Octeon II/III/TX/TX2 GPIO driver"
422 depends on DM_GPIO && PCI && (ARCH_OCTEON || ARCH_OCTEONTX || ARCH_OCTEONTX2)
425 Add support for the Marvell Octeon GPIO driver. This is used with
426 various Octeon parts such as Octeon II/III and OcteonTX/TX2.
427 Octeon II/III has 32 GPIOs (count defined via DT) and OcteonTX/TX2
428 has 64 GPIOs (count defined via internal register).
431 bool "ST STM32 GPIO driver"
432 depends on DM_GPIO && (ARCH_STM32 || ARCH_STM32MP)
435 Device model driver support for STM32 GPIO controller. It should be
436 usable on many stm32 families like stm32f4/f7/h7 and stm32mp1.
440 bool "SiFive GPIO driver"
443 Device model driver for GPIO controller present in SiFive FU540 SoC. This
444 driver enables GPIO interface on HiFive Unleashed A00 board.
447 bool "Marvell MVEBU GPIO driver"
448 depends on DM_GPIO && (ARCH_MVEBU || ARCH_KIRKWOOD)
451 Say yes here to support Marvell MVEBU (Armada XP/38x) GPIOs.
454 bool "Zynq GPIO driver"
456 default y if ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL
458 Supports GPIO access on Zynq SoC.
461 bool "74x164 serial-in/parallel-out 8-bits shift register"
464 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
465 shift registers, such as 74lv165, 74hc595.
466 This driver can be used to provide access to more gpio outputs.
469 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
470 depends on DM_GPIO && DM_I2C
472 Say yes here to provide access to several register-oriented
473 SMBus I/O expanders, made mostly by NXP or TI. Compatible
476 4 bits: pca9536, pca9537
478 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
479 pca9556, pca9557, pca9574, tca6408, xra1202
481 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
486 40 bits: pca9505, pca9698
488 Now, max 24 bits chips and PCA953X compatible chips are
491 config SPL_DM_PCA953X
492 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports in SPL"
493 depends on SPL_DM_GPIO
495 Say yes here to provide access to several register-oriented
496 SMBus I/O expanders, made mostly by NXP or TI. Compatible
499 4 bits: pca9536, pca9537
501 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
502 pca9556, pca9557, pca9574, tca6408, xra1202
504 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
509 40 bits: pca9505, pca9698
511 Now, max 24 bits chips and PCA953X compatible chips are
515 bool "Freescale MPC8XXX GPIO driver"
518 This driver supports the built-in GPIO controller of MPC8XXX CPUs.
519 Each GPIO bank is identified by its own entry in the device tree,
522 gpio-controller@fc00 {
524 compatible = "fsl,pq3-gpio";
528 By default, each bank is assumed to have 32 GPIOs, but the ngpios
529 setting is honored, so the number of GPIOs for each bank is
530 configurable to match the actual GPIO count of the SoC (e.g. the
531 32/32/23 banks of the P1022 SoC).
533 Aside from the standard functions of input/output mode, and output
534 value setting, the open-drain feature, which can configure individual
535 GPIOs to work as open-drain outputs, is supported.
537 config MPC83XX_SPISEL_BOOT
538 bool "Freescale MPC83XX SPISEL_BOOT driver"
539 depends on DM_GPIO && ARCH_MPC830X
541 GPIO driver to set/clear dedicated SPISEL_BOOT output on MPC83XX.
543 This pin is typically used as spi chip select to a spi nor flash.
546 bool "MediaTek MT7620 GPIO driver"
547 depends on DM_GPIO && SOC_MT7620
550 Device model driver for GPIO controller present in MediaTek MT7620
554 bool "MediaTek MT7621 GPIO driver"
555 depends on DM_GPIO && (SOC_MT7621 || SOC_MT7628)
558 Say yes here to support MediaTek MT7621 compatible GPIOs.
561 bool "Nexell GPIO driver"
564 Support GPIO access on Nexell SoCs. The GPIOs are arranged into
565 a number of banks (different for each SoC type) each with 32 GPIOs.
566 The GPIOs for a device are defined in the device tree with one node
570 bool "Nomadik GPIO driver"
573 Support GPIO access on ST-Ericsson Ux500 SoCs. The GPIOs are arranged
574 into a number of banks each with 32 GPIOs. The GPIOs for a device are
575 defined in the device tree with one node for each bank.
577 config ZYNQMP_GPIO_MODEPIN
578 bool "ZynqMP gpio modepin"
581 This config enables the ZynqMP gpio modepin driver. ZynqMP modepin
582 driver will set and get the status of PS_MODE pins. These modepins
583 are accessed using xilinx firmware. In modepin register, [3:0] bits
584 set direction, [7:4] bits read IO, [11:8] bits set/clear IO.
587 bool "Kontron sl28cpld GPIO driver"
588 depends on DM_GPIO && SL28CPLD
590 Support GPIO access on Kontron sl28cpld board management controllers.
592 config SLG7XL45106_I2C_GPO
593 bool "slg7xl45106 i2c gpo expander"
596 Support for slg7xl45106 i2c gpo expander. It is an i2c based
597 8-bit gpo expander, all gpo lines are controlled by writing
598 value into data register.
600 config TURRIS_OMNIA_MCU
601 bool "Turris Omnia MCU GPIO driver"
603 default y if TARGET_TURRIS_OMNIA
605 Support for GPIOs on MCU connected to Turris Omnia via i2c.
608 bool "Faraday Technology FTGPIO010 driver"
611 Support for GPIOs on Faraday Technology's FTGPIO010 controller.
614 bool "ADP5585 GPIO driver"
615 depends on DM_GPIO && DM_I2C
617 Support ADP5585 GPIO expander.