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 "BCM2835 GPIO driver"
92 bool "BCM6345 GPIO driver"
93 depends on DM_GPIO && (ARCH_BMIPS || ARCH_BCM68360 || \
94 ARCH_BCM6858 || ARCH_BCM63158 || \
97 This driver supports the GPIO banks on BCM6345 SoCs.
100 bool "Cortina-Access GPIO driver"
101 depends on DM_GPIO && CORTINA_PLATFORM
103 Enable support for the GPIO controller in Cortina CAxxxx SoCs.
104 This driver supports all CPU ISA variants supported by Cortina
108 bool "DWAPB GPIO driver"
109 depends on DM && DM_GPIO
111 Support for the Designware APB GPIO driver.
114 bool "AT91 PIO GPIO driver"
116 Say yes here to select AT91 PIO GPIO driver. AT91 PIO
117 controller manages up to 32 fully programmable input/output
118 lines. Each I/O line may be dedicated as a general-purpose
119 I/O or be assigned to a function of an embedded peripheral.
120 The assignment to a function of an embedded peripheral is
121 the responsibility of AT91 Pinctrl driver. This driver is
122 responsible for the general-purpose I/O.
125 bool "ATMEL PIO4 driver"
128 Say yes here to support the Atmel PIO4 driver.
129 The PIO4 is new version of Atmel PIO controller, which manages
130 up to 128 fully programmable input/output lines. Each I/O line
131 may be dedicated as a general purpose I/O or be assigned to
132 a function of an embedded peripheral.
135 bool "Aspeed GPIO Driver"
137 Say yes here to support the Aspeed GPIO driver. The controller
138 is found in the AST2400, AST2500 and AST2600 BMC SoCs and
139 provides access to over 200 GPIOs on each chip.
142 bool "DA8xx GPIO Driver"
144 This driver supports the DA8xx GPIO controller
147 bool "FXL6408 I2C GPIO expander driver"
148 depends on DM_GPIO && DM_I2C
150 This driver supports the Fairchild FXL6408 device. FXL6408 is a
151 fully configurable 8-bit I2C-controlled GPIO expander.
153 config INTEL_BROADWELL_GPIO
154 bool "Intel Broadwell GPIO driver"
157 This driver supports Broadwell U devices which have an expanded
158 GPIO feature set. The difference is large enough to merit a separate
159 driver from the common Intel ICH6 driver. It supports a total of
160 95 GPIOs which can be configured from the device tree.
163 bool "Intel generic GPIO driver"
166 Say yes here to select Intel generic GPIO driver. This controller
167 supports recent chips (e.g. Apollo Lake). It permits basic GPIO
168 control including setting pins to input/output. It makes use of its
169 parent pinctrl driver to actually effect changes.
171 config INTEL_ICH6_GPIO
172 bool "Intel ICH6 compatible legacy GPIO driver"
175 Say yes here to select Intel ICH6 compatible legacy GPIO driver.
178 bool "i.MX7ULP RGPIO2P driver"
181 This driver supports i.MX7ULP Rapid GPIO2P controller.
184 bool "Broadcom iProc GPIO driver(without pinconf)"
186 The Broadcom iProc based SoCs- Cygnus, NS2, NS3, NSP and Stingray,
187 use the same GPIO Controller IP hence this driver could be used
190 The Broadcom iProc based SoCs have multiple GPIO controllers and only
191 the always-ON GPIO controller (CRMU/AON) is supported by this driver.
193 config HSDK_CREG_GPIO
194 bool "HSDK CREG GPIO griver"
197 This driver supports CREG GPIOs on Synopsys HSDK SOC.
200 bool "Kirkwood GPIO driver"
202 This drdiver supports GPIOs on Kirkwood platforms
205 bool "LPC32XX GPIO driver"
208 Support for the LPC32XX GPIO driver.
211 bool "MAX7320 I2C GPIO Expander driver"
212 depends on DM_GPIO && DM_I2C
214 Support for MAX7320 I2C 8/16-bit GPIO expander.
215 original maxim device has 8 push/pull outputs,
216 some clones offers 16bit.
219 bool "MCP230XX GPIO driver"
222 Support for Microchip's MCP230XX I2C connected GPIO devices.
223 The following chips are supported:
229 bool "Microsemi Serial GPIO driver"
230 depends on DM_GPIO && SOC_VCOREIII
232 Support for the VCoreIII SoC serial GPIO device. By using a
233 serial interface, the SIO controller significantly extends
234 the number of available GPIOs with a minimum number of
235 additional pins on the device. The primary purpose of the
236 SIO controller is to connect control signals from SFP
237 modules and to act as an LED controller.
240 bool "Qualcomm GPIO driver"
243 Support GPIO controllers on Qualcomm Snapdragon family of SoCs.
244 This controller have single bank (default name "soc"), every
245 gpio has it's own set of registers.
246 Only simple GPIO operations are supported (get/set, change of
247 direction and checking pin function).
253 bool "Freescale/NXP MXC GPIO driver"
255 Support GPIO controllers on various i.MX platforms
258 bool "Freescale/NXP MXS GPIO driver"
260 Support GPIO controllers on i.MX23 and i.MX28 platforms
263 bool "TI OMAP GPIO driver"
264 depends on ARCH_OMAP2PLUS
267 Support GPIO controllers on the TI OMAP3/4/5 and related (such as
268 AM335x/AM43xx/AM57xx/DRA7xx/etc) families of SoCs.
271 bool "Enable the pca953x command"
273 Deprecated: This should be converted to driver model.
275 This command provides access to a pca953x GPIO device using the
276 legacy GPIO interface. Several subcommands are provided which mirror
277 the standard 'gpio' command. It should use that instead.
280 bool "Qualcomm PM8916 PMIC GPIO/keypad driver"
281 depends on DM_GPIO && PMIC_PM8916
283 Support for GPIO pins and power/reset buttons found on
284 Qualcomm PM8916 PMIC.
285 Default name for GPIO bank is "pm8916".
286 Power and reset buttons are placed in "pm8916_key" bank and
287 have gpio numbers 0 and 1 respectively.
290 bool "PCF8575 I2C GPIO Expander driver"
291 depends on DM_GPIO && DM_I2C
293 Support for PCF8575 I2C 16-bit GPIO expander. Most of these
294 chips are from NXP and TI.
297 bool "Renesas RCar GPIO driver"
298 depends on DM_GPIO && ARCH_RMOBILE
300 This driver supports the GPIO banks on Renesas RCar SoCs.
303 bool "Renesas RZ/A1 GPIO driver"
304 depends on DM_GPIO && RZA1
306 This driver supports the GPIO banks on Renesas RZ/A1 R7S72100 SoCs.
309 bool "Rockchip GPIO driver"
312 Support GPIO access on Rockchip SoCs. The GPIOs are arranged into
313 a number of banks (different for each SoC type) each with 32 GPIOs.
314 The GPIOs for a device are defined in the device tree with one node
318 bool "Enable sandbox GPIO driver"
319 depends on SANDBOX && DM && DM_GPIO
321 This driver supports some simulated GPIOs which can be adjusted
322 using 'back door' functions like sandbox_gpio_set_value(). Then the
323 GPIOs can be inspected through the normal get_get_value()
324 interface. The purpose of this is to allow GPIOs to be used as
325 normal in sandbox, perhaps with test code actually driving the
326 behaviour of those GPIOs.
328 config SANDBOX_GPIO_COUNT
329 int "Number of sandbox GPIOs"
330 depends on SANDBOX_GPIO
333 The sandbox driver can support any number of GPIOs. Generally these
334 are specified using the device tree. But you can also have a number
335 of 'anonymous' GPIOs that do not belong to any device or bank.
336 Select a suitable value depending on your needs.
339 bool "Allwinner GPIO driver"
340 depends on ARCH_SUNXI
342 Support the GPIO device in Allwinner SoCs.
345 bool "Xilinx GPIO driver"
348 This config enable the Xilinx GPIO driver for Microblaze.
351 bool "tca642x - Command to access tca642x state"
353 DEPRECATED - This needs conversion to driver model
355 This provides a way to looking at the pin state of this device.
356 This mirrors the 'gpio' command and that should be used in preference
360 bool "Tegra20..210 GPIO driver"
363 Support for the GPIO controller contained in NVIDIA Tegra20 through
367 bool "Tegra186 GPIO driver"
370 Support for the GPIO controller contained in NVIDIA Tegra186. This
371 covers both the "main" and "AON" controller instances, even though
372 they have slightly different register layout.
376 depends on ARCH_UNIPHIER
378 Say yes here to support UniPhier GPIOs.
381 bool "Vybrid GPIO driver"
384 Say yes here to support Vybrid vf610 GPIOs.
387 bool "Microchip PIC32 GPIO driver"
388 depends on DM_GPIO && MACH_PIC32
391 Say yes here to support Microchip PIC32 GPIOs.
394 bool "Octeon II/III/TX/TX2 GPIO driver"
395 depends on DM_GPIO && PCI && (ARCH_OCTEON || ARCH_OCTEONTX || ARCH_OCTEONTX2)
398 Add support for the Marvell Octeon GPIO driver. This is used with
399 various Octeon parts such as Octeon II/III and OcteonTX/TX2.
400 Octeon II/III has 32 GPIOs (count defined via DT) and OcteonTX/TX2
401 has 64 GPIOs (count defined via internal register).
404 bool "ST STM32 GPIO driver"
405 depends on DM_GPIO && (ARCH_STM32 || ARCH_STM32MP)
408 Device model driver support for STM32 GPIO controller. It should be
409 usable on many stm32 families like stm32f4/f7/h7 and stm32mp1.
413 bool "SiFive GPIO driver"
416 Device model driver for GPIO controller present in SiFive FU540 SoC. This
417 driver enables GPIO interface on HiFive Unleashed A00 board.
420 bool "Marvell MVEBU GPIO driver"
421 depends on DM_GPIO && (ARCH_MVEBU || ARCH_KIRKWOOD)
424 Say yes here to support Marvell MVEBU (Armada XP/38x) GPIOs.
427 bool "Zynq GPIO driver"
429 default y if ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL
431 Supports GPIO access on Zynq SoC.
434 bool "74x164 serial-in/parallel-out 8-bits shift register"
437 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
438 shift registers, such as 74lv165, 74hc595.
439 This driver can be used to provide access to more gpio outputs.
442 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
443 depends on DM_GPIO && DM_I2C
445 Say yes here to provide access to several register-oriented
446 SMBus I/O expanders, made mostly by NXP or TI. Compatible
449 4 bits: pca9536, pca9537
451 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
452 pca9556, pca9557, pca9574, tca6408, xra1202
454 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
459 40 bits: pca9505, pca9698
461 Now, max 24 bits chips and PCA953X compatible chips are
464 config SPL_DM_PCA953X
465 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports in SPL"
468 Say yes here to provide access to several register-oriented
469 SMBus I/O expanders, made mostly by NXP or TI. Compatible
472 4 bits: pca9536, pca9537
474 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
475 pca9556, pca9557, pca9574, tca6408, xra1202
477 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
482 40 bits: pca9505, pca9698
484 Now, max 24 bits chips and PCA953X compatible chips are
488 bool "Freescale MPC8XXX GPIO driver"
491 This driver supports the built-in GPIO controller of MPC8XXX CPUs.
492 Each GPIO bank is identified by its own entry in the device tree,
495 gpio-controller@fc00 {
497 compatible = "fsl,pq3-gpio";
501 By default, each bank is assumed to have 32 GPIOs, but the ngpios
502 setting is honored, so the number of GPIOs for each bank is
503 configurable to match the actual GPIO count of the SoC (e.g. the
504 32/32/23 banks of the P1022 SoC).
506 Aside from the standard functions of input/output mode, and output
507 value setting, the open-drain feature, which can configure individual
508 GPIOs to work as open-drain outputs, is supported.
510 config MPC83XX_SPISEL_BOOT
511 bool "Freescale MPC83XX SPISEL_BOOT driver"
512 depends on DM_GPIO && ARCH_MPC830X
514 GPIO driver to set/clear dedicated SPISEL_BOOT output on MPC83XX.
516 This pin is typically used as spi chip select to a spi nor flash.
519 bool "MediaTek MT7620 GPIO driver"
520 depends on DM_GPIO && SOC_MT7620
523 Device model driver for GPIO controller present in MediaTek MT7620
527 bool "MediaTek MT7621 GPIO driver"
528 depends on DM_GPIO && SOC_MT7628
531 Say yes here to support MediaTek MT7621 compatible GPIOs.
534 bool "Nexell GPIO driver"
537 Support GPIO access on Nexell SoCs. The GPIOs are arranged into
538 a number of banks (different for each SoC type) each with 32 GPIOs.
539 The GPIOs for a device are defined in the device tree with one node
543 bool "Nomadik GPIO driver"
546 Support GPIO access on ST-Ericsson Ux500 SoCs. The GPIOs are arranged
547 into a number of banks each with 32 GPIOs. The GPIOs for a device are
548 defined in the device tree with one node for each bank.
550 config ZYNQMP_GPIO_MODEPIN
551 bool "ZynqMP gpio modepin"
554 This config enables the ZynqMP gpio modepin driver. ZynqMP modepin
555 driver will set and get the status of PS_MODE pins. These modepins
556 are accessed using xilinx firmware. In modepin register, [3:0] bits
557 set direction, [7:4] bits read IO, [11:8] bits set/clear IO.
560 bool "Kontron sl28cpld GPIO driver"
561 depends on DM_GPIO && SL28CPLD
563 Support GPIO access on Kontron sl28cpld board management controllers.
565 config SLG7XL45106_I2C_GPO
566 bool "slg7xl45106 i2c gpo expander"
569 Support for slg7xl45106 i2c gpo expander. It is an i2c based
570 8-bit gpo expander, all gpo lines are controlled by writing
571 value into data register.