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
135 bool "FXL6408 I2C GPIO expander driver"
136 depends on DM_GPIO && DM_I2C
138 This driver supports the Fairchild FXL6408 device. FXL6408 is a
139 fully configurable 8-bit I2C-controlled GPIO expander.
141 config INTEL_BROADWELL_GPIO
142 bool "Intel Broadwell GPIO driver"
145 This driver supports Broadwell U devices which have an expanded
146 GPIO feature set. The difference is large enough to merit a separate
147 driver from the common Intel ICH6 driver. It supports a total of
148 95 GPIOs which can be configured from the device tree.
151 bool "Intel generic GPIO driver"
154 Say yes here to select Intel generic GPIO driver. This controller
155 supports recent chips (e.g. Apollo Lake). It permits basic GPIO
156 control including setting pins to input/output. It makes use of its
157 parent pinctrl driver to actually effect changes.
159 config INTEL_ICH6_GPIO
160 bool "Intel ICH6 compatible legacy GPIO driver"
163 Say yes here to select Intel ICH6 compatible legacy GPIO driver.
166 bool "i.MX7ULP RGPIO2P driver"
169 This driver supports i.MX7ULP Rapid GPIO2P controller.
172 bool "Broadcom iProc GPIO driver(without pinconf)"
174 The Broadcom iProc based SoCs- Cygnus, NS2, NS3, NSP and Stingray,
175 use the same GPIO Controller IP hence this driver could be used
178 The Broadcom iProc based SoCs have multiple GPIO controllers and only
179 the always-ON GPIO controller (CRMU/AON) is supported by this driver.
181 config HSDK_CREG_GPIO
182 bool "HSDK CREG GPIO griver"
185 This driver supports CREG GPIOs on Synopsys HSDK SOC.
188 bool "Kirkwood GPIO driver"
190 This drdiver supports GPIOs on Kirkwood platforms
193 bool "LPC32XX GPIO driver"
196 Support for the LPC32XX GPIO driver.
199 bool "MAX7320 I2C GPIO Expander driver"
200 depends on DM_GPIO && DM_I2C
202 Support for MAX7320 I2C 8/16-bit GPIO expander.
203 original maxim device has 8 push/pull outputs,
204 some clones offers 16bit.
207 bool "MCP230XX GPIO driver"
210 Support for Microchip's MCP230XX I2C connected GPIO devices.
211 The following chips are supported:
217 bool "Microsemi Serial GPIO driver"
218 depends on DM_GPIO && SOC_VCOREIII
220 Support for the VCoreIII SoC serial GPIO device. By using a
221 serial interface, the SIO controller significantly extends
222 the number of available GPIOs with a minimum number of
223 additional pins on the device. The primary purpose of the
224 SIO controller is to connect control signals from SFP
225 modules and to act as an LED controller.
228 bool "Qualcomm GPIO driver"
231 Support GPIO controllers on Qualcomm Snapdragon family of SoCs.
232 This controller have single bank (default name "soc"), every
233 gpio has it's own set of registers.
234 Only simple GPIO operations are supported (get/set, change of
235 direction and checking pin function).
241 bool "Freescale/NXP MXC GPIO driver"
243 Support GPIO controllers on various i.MX platforms
246 bool "Freescale/NXP MXS GPIO driver"
248 Support GPIO controllers on i.MX23 and i.MX28 platforms
251 bool "TI OMAP GPIO driver"
252 depends on ARCH_OMAP2PLUS
255 Support GPIO controllers on the TI OMAP3/4/5 and related (such as
256 AM335x/AM43xx/AM57xx/DRA7xx/etc) families of SoCs.
259 bool "Enable the pca953x command"
261 Deprecated: This should be converted to driver model.
263 This command provides access to a pca953x GPIO device using the
264 legacy GPIO interface. Several subcommands are provided which mirror
265 the standard 'gpio' command. It should use that instead.
268 bool "Qualcomm PM8916 PMIC GPIO/keypad driver"
269 depends on DM_GPIO && PMIC_PM8916
271 Support for GPIO pins and power/reset buttons found on
272 Qualcomm PM8916 PMIC.
273 Default name for GPIO bank is "pm8916".
274 Power and reset buttons are placed in "pm8916_key" bank and
275 have gpio numbers 0 and 1 respectively.
278 bool "PCF8575 I2C GPIO Expander driver"
279 depends on DM_GPIO && DM_I2C
281 Support for PCF8575 I2C 16-bit GPIO expander. Most of these
282 chips are from NXP and TI.
285 bool "Renesas RCar GPIO driver"
286 depends on DM_GPIO && ARCH_RMOBILE
288 This driver supports the GPIO banks on Renesas RCar SoCs.
291 bool "Renesas RZ/A1 GPIO driver"
292 depends on DM_GPIO && RZA1
294 This driver supports the GPIO banks on Renesas RZ/A1 R7S72100 SoCs.
297 bool "Rockchip GPIO driver"
300 Support GPIO access on Rockchip SoCs. The GPIOs are arranged into
301 a number of banks (different for each SoC type) each with 32 GPIOs.
302 The GPIOs for a device are defined in the device tree with one node
306 bool "Enable sandbox GPIO driver"
307 depends on SANDBOX && DM && DM_GPIO
309 This driver supports some simulated GPIOs which can be adjusted
310 using 'back door' functions like sandbox_gpio_set_value(). Then the
311 GPIOs can be inspected through the normal get_get_value()
312 interface. The purpose of this is to allow GPIOs to be used as
313 normal in sandbox, perhaps with test code actually driving the
314 behaviour of those GPIOs.
316 config SANDBOX_GPIO_COUNT
317 int "Number of sandbox GPIOs"
318 depends on SANDBOX_GPIO
321 The sandbox driver can support any number of GPIOs. Generally these
322 are specified using the device tree. But you can also have a number
323 of 'anonymous' GPIOs that do not belong to any device or bank.
324 Select a suitable value depending on your needs.
327 bool "Allwinner GPIO driver"
328 depends on ARCH_SUNXI
330 Support the GPIO device in Allwinner SoCs.
333 bool "Xilinx GPIO driver"
336 This config enable the Xilinx GPIO driver for Microblaze.
339 bool "tca642x - Command to access tca642x state"
341 DEPRECATED - This needs conversion to driver model
343 This provides a way to looking at the pin state of this device.
344 This mirrors the 'gpio' command and that should be used in preference
348 bool "Tegra20..210 GPIO driver"
351 Support for the GPIO controller contained in NVIDIA Tegra20 through
355 bool "Tegra186 GPIO driver"
358 Support for the GPIO controller contained in NVIDIA Tegra186. This
359 covers both the "main" and "AON" controller instances, even though
360 they have slightly different register layout.
364 depends on ARCH_UNIPHIER
366 Say yes here to support UniPhier GPIOs.
369 bool "Vybrid GPIO driver"
372 Say yes here to support Vybrid vf610 GPIOs.
375 bool "Microchip PIC32 GPIO driver"
376 depends on DM_GPIO && MACH_PIC32
379 Say yes here to support Microchip PIC32 GPIOs.
382 bool "Octeon II/III/TX/TX2 GPIO driver"
383 depends on DM_GPIO && PCI && (ARCH_OCTEON || ARCH_OCTEONTX || ARCH_OCTEONTX2)
386 Add support for the Marvell Octeon GPIO driver. This is used with
387 various Octeon parts such as Octeon II/III and OcteonTX/TX2.
388 Octeon II/III has 32 GPIOs (count defined via DT) and OcteonTX/TX2
389 has 64 GPIOs (count defined via internal register).
392 bool "ST STM32 GPIO driver"
393 depends on DM_GPIO && (ARCH_STM32 || ARCH_STM32MP)
396 Device model driver support for STM32 GPIO controller. It should be
397 usable on many stm32 families like stm32f4/f7/h7 and stm32mp1.
401 bool "SiFive GPIO driver"
404 Device model driver for GPIO controller present in SiFive FU540 SoC. This
405 driver enables GPIO interface on HiFive Unleashed A00 board.
408 bool "Marvell MVEBU GPIO driver"
409 depends on DM_GPIO && (ARCH_MVEBU || ARCH_KIRKWOOD)
412 Say yes here to support Marvell MVEBU (Armada XP/38x) GPIOs.
415 bool "Zynq GPIO driver"
417 default y if ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL
419 Supports GPIO access on Zynq SoC.
422 bool "74x164 serial-in/parallel-out 8-bits shift register"
425 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
426 shift registers, such as 74lv165, 74hc595.
427 This driver can be used to provide access to more gpio outputs.
430 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
431 depends on DM_GPIO && DM_I2C
433 Say yes here to provide access to several register-oriented
434 SMBus I/O expanders, made mostly by NXP or TI. Compatible
437 4 bits: pca9536, pca9537
439 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
440 pca9556, pca9557, pca9574, tca6408, xra1202
442 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
447 40 bits: pca9505, pca9698
449 Now, max 24 bits chips and PCA953X compatible chips are
452 config SPL_DM_PCA953X
453 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports in SPL"
456 Say yes here to provide access to several register-oriented
457 SMBus I/O expanders, made mostly by NXP or TI. Compatible
460 4 bits: pca9536, pca9537
462 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
463 pca9556, pca9557, pca9574, tca6408, xra1202
465 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
470 40 bits: pca9505, pca9698
472 Now, max 24 bits chips and PCA953X compatible chips are
476 bool "Freescale MPC8XXX GPIO driver"
479 This driver supports the built-in GPIO controller of MPC8XXX CPUs.
480 Each GPIO bank is identified by its own entry in the device tree,
483 gpio-controller@fc00 {
485 compatible = "fsl,pq3-gpio";
489 By default, each bank is assumed to have 32 GPIOs, but the ngpios
490 setting is honored, so the number of GPIOs for each bank is
491 configurable to match the actual GPIO count of the SoC (e.g. the
492 32/32/23 banks of the P1022 SoC).
494 Aside from the standard functions of input/output mode, and output
495 value setting, the open-drain feature, which can configure individual
496 GPIOs to work as open-drain outputs, is supported.
498 config MPC83XX_SPISEL_BOOT
499 bool "Freescale MPC83XX SPISEL_BOOT driver"
500 depends on DM_GPIO && ARCH_MPC830X
502 GPIO driver to set/clear dedicated SPISEL_BOOT output on MPC83XX.
504 This pin is typically used as spi chip select to a spi nor flash.
507 bool "MediaTek MT7620 GPIO driver"
508 depends on DM_GPIO && SOC_MT7620
511 Device model driver for GPIO controller present in MediaTek MT7620
515 bool "MediaTek MT7621 GPIO driver"
516 depends on DM_GPIO && SOC_MT7628
519 Say yes here to support MediaTek MT7621 compatible GPIOs.
522 bool "Nexell GPIO driver"
525 Support GPIO access on Nexell SoCs. The GPIOs are arranged into
526 a number of banks (different for each SoC type) each with 32 GPIOs.
527 The GPIOs for a device are defined in the device tree with one node
531 bool "Nomadik GPIO driver"
534 Support GPIO access on ST-Ericsson Ux500 SoCs. The GPIOs are arranged
535 into a number of banks each with 32 GPIOs. The GPIOs for a device are
536 defined in the device tree with one node for each bank.
538 config ZYNQMP_GPIO_MODEPIN
539 bool "ZynqMP gpio modepin"
542 This config enables the ZynqMP gpio modepin driver. ZynqMP modepin
543 driver will set and get the status of PS_MODE pins. These modepins
544 are accessed using xilinx firmware. In modepin register, [3:0] bits
545 set direction, [7:4] bits read IO, [11:8] bits set/clear IO.
548 bool "Kontron sl28cpld GPIO driver"
549 depends on DM_GPIO && SL28CPLD
551 Support GPIO access on Kontron sl28cpld board management controllers.
553 config SLG7XL45106_I2C_GPO
554 bool "slg7xl45106 i2c gpo expander"
557 Support for slg7xl45106 i2c gpo expander. It is an i2c based
558 8-bit gpo expander, all gpo lines are controlled by writing
559 value into data register.