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
134 config INTEL_BROADWELL_GPIO
135 bool "Intel Broadwell GPIO driver"
138 This driver supports Broadwell U devices which have an expanded
139 GPIO feature set. The difference is large enough to merit a separate
140 driver from the common Intel ICH6 driver. It supports a total of
141 95 GPIOs which can be configured from the device tree.
144 bool "Intel generic GPIO driver"
147 Say yes here to select Intel generic GPIO driver. This controller
148 supports recent chips (e.g. Apollo Lake). It permits basic GPIO
149 control including setting pins to input/output. It makes use of its
150 parent pinctrl driver to actually effect changes.
152 config INTEL_ICH6_GPIO
153 bool "Intel ICH6 compatible legacy GPIO driver"
156 Say yes here to select Intel ICH6 compatible legacy GPIO driver.
159 bool "i.MX7ULP RGPIO2P driver"
162 This driver supports i.MX7ULP Rapid GPIO2P controller.
165 bool "Broadcom iProc GPIO driver(without pinconf)"
167 The Broadcom iProc based SoCs- Cygnus, NS2, NS3, NSP and Stingray,
168 use the same GPIO Controller IP hence this driver could be used
171 The Broadcom iProc based SoCs have multiple GPIO controllers and only
172 the always-ON GPIO controller (CRMU/AON) is supported by this driver.
174 config HSDK_CREG_GPIO
175 bool "HSDK CREG GPIO griver"
178 This driver supports CREG GPIOs on Synopsys HSDK SOC.
181 bool "Kirkwood GPIO driver"
183 This drdiver supports GPIOs on Kirkwood platforms
186 bool "LPC32XX GPIO driver"
189 Support for the LPC32XX GPIO driver.
192 bool "MAX7320 I2C GPIO Expander driver"
193 depends on DM_GPIO && DM_I2C
195 Support for MAX7320 I2C 8/16-bit GPIO expander.
196 original maxim device has 8 push/pull outputs,
197 some clones offers 16bit.
200 bool "MCP230XX GPIO driver"
203 Support for Microchip's MCP230XX I2C connected GPIO devices.
204 The following chips are supported:
210 bool "Microsemi Serial GPIO driver"
211 depends on DM_GPIO && SOC_VCOREIII
213 Support for the VCoreIII SoC serial GPIO device. By using a
214 serial interface, the SIO controller significantly extends
215 the number of available GPIOs with a minimum number of
216 additional pins on the device. The primary purpose of the
217 SIO controller is to connect control signals from SFP
218 modules and to act as an LED controller.
221 bool "Qualcomm GPIO driver"
224 Support GPIO controllers on Qualcomm Snapdragon family of SoCs.
225 This controller have single bank (default name "soc"), every
226 gpio has it's own set of registers.
227 Only simple GPIO operations are supported (get/set, change of
228 direction and checking pin function).
234 bool "Freescale/NXP MXC GPIO driver"
236 Support GPIO controllers on various i.MX platforms
239 bool "Freescale/NXP MXS GPIO driver"
241 Support GPIO controllers on i.MX23 and i.MX28 platforms
244 bool "TI OMAP GPIO driver"
245 depends on ARCH_OMAP2PLUS
248 Support GPIO controllers on the TI OMAP3/4/5 and related (such as
249 AM335x/AM43xx/AM57xx/DRA7xx/etc) families of SoCs.
252 bool "Enable the pca953x command"
254 Deprecated: This should be converted to driver model.
256 This command provides access to a pca953x GPIO device using the
257 legacy GPIO interface. Several subcommands are provided which mirror
258 the standard 'gpio' command. It should use that instead.
261 bool "Qualcomm PM8916 PMIC GPIO/keypad driver"
262 depends on DM_GPIO && PMIC_PM8916
264 Support for GPIO pins and power/reset buttons found on
265 Qualcomm PM8916 PMIC.
266 Default name for GPIO bank is "pm8916".
267 Power and reset buttons are placed in "pm8916_key" bank and
268 have gpio numbers 0 and 1 respectively.
271 bool "PCF8575 I2C GPIO Expander driver"
272 depends on DM_GPIO && DM_I2C
274 Support for PCF8575 I2C 16-bit GPIO expander. Most of these
275 chips are from NXP and TI.
278 bool "Renesas RCar GPIO driver"
279 depends on DM_GPIO && ARCH_RMOBILE
281 This driver supports the GPIO banks on Renesas RCar SoCs.
284 bool "Renesas RZ/A1 GPIO driver"
285 depends on DM_GPIO && RZA1
287 This driver supports the GPIO banks on Renesas RZ/A1 R7S72100 SoCs.
290 bool "Rockchip GPIO driver"
293 Support GPIO access on Rockchip SoCs. The GPIOs are arranged into
294 a number of banks (different for each SoC type) each with 32 GPIOs.
295 The GPIOs for a device are defined in the device tree with one node
299 bool "Enable sandbox GPIO driver"
300 depends on SANDBOX && DM && DM_GPIO
302 This driver supports some simulated GPIOs which can be adjusted
303 using 'back door' functions like sandbox_gpio_set_value(). Then the
304 GPIOs can be inspected through the normal get_get_value()
305 interface. The purpose of this is to allow GPIOs to be used as
306 normal in sandbox, perhaps with test code actually driving the
307 behaviour of those GPIOs.
309 config SANDBOX_GPIO_COUNT
310 int "Number of sandbox GPIOs"
311 depends on SANDBOX_GPIO
314 The sandbox driver can support any number of GPIOs. Generally these
315 are specified using the device tree. But you can also have a number
316 of 'anonymous' GPIOs that do not belong to any device or bank.
317 Select a suitable value depending on your needs.
320 bool "Allwinner GPIO driver"
321 depends on ARCH_SUNXI
323 Support the GPIO device in Allwinner SoCs.
326 bool "Xilinx GPIO driver"
329 This config enable the Xilinx GPIO driver for Microblaze.
332 bool "tca642x - Command to access tca642x state"
334 DEPRECATED - This needs conversion to driver model
336 This provides a way to looking at the pin state of this device.
337 This mirrors the 'gpio' command and that should be used in preference
341 bool "Tegra20..210 GPIO driver"
344 Support for the GPIO controller contained in NVIDIA Tegra20 through
348 bool "Tegra186 GPIO driver"
351 Support for the GPIO controller contained in NVIDIA Tegra186. This
352 covers both the "main" and "AON" controller instances, even though
353 they have slightly different register layout.
357 depends on ARCH_UNIPHIER
359 Say yes here to support UniPhier GPIOs.
362 bool "Vybrid GPIO driver"
365 Say yes here to support Vybrid vf610 GPIOs.
368 bool "Microchip PIC32 GPIO driver"
369 depends on DM_GPIO && MACH_PIC32
372 Say yes here to support Microchip PIC32 GPIOs.
375 bool "Octeon II/III/TX/TX2 GPIO driver"
376 depends on DM_GPIO && PCI && (ARCH_OCTEON || ARCH_OCTEONTX || ARCH_OCTEONTX2)
379 Add support for the Marvell Octeon GPIO driver. This is used with
380 various Octeon parts such as Octeon II/III and OcteonTX/TX2.
381 Octeon II/III has 32 GPIOs (count defined via DT) and OcteonTX/TX2
382 has 64 GPIOs (count defined via internal register).
385 bool "ST STM32 GPIO driver"
386 depends on DM_GPIO && (ARCH_STM32 || ARCH_STM32MP)
389 Device model driver support for STM32 GPIO controller. It should be
390 usable on many stm32 families like stm32f4/f7/h7 and stm32mp1.
394 bool "SiFive GPIO driver"
397 Device model driver for GPIO controller present in SiFive FU540 SoC. This
398 driver enables GPIO interface on HiFive Unleashed A00 board.
401 bool "Marvell MVEBU GPIO driver"
402 depends on DM_GPIO && (ARCH_MVEBU || ARCH_KIRKWOOD)
405 Say yes here to support Marvell MVEBU (Armada XP/38x) GPIOs.
408 bool "Zynq GPIO driver"
410 default y if ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_VERSAL
412 Supports GPIO access on Zynq SoC.
415 bool "74x164 serial-in/parallel-out 8-bits shift register"
418 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
419 shift registers, such as 74lv165, 74hc595.
420 This driver can be used to provide access to more gpio outputs.
423 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
424 depends on DM_GPIO && DM_I2C
426 Say yes here to provide access to several register-oriented
427 SMBus I/O expanders, made mostly by NXP or TI. Compatible
430 4 bits: pca9536, pca9537
432 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
433 pca9556, pca9557, pca9574, tca6408, xra1202
435 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
440 40 bits: pca9505, pca9698
442 Now, max 24 bits chips and PCA953X compatible chips are
445 config SPL_DM_PCA953X
446 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports in SPL"
449 Say yes here to provide access to several register-oriented
450 SMBus I/O expanders, made mostly by NXP or TI. Compatible
453 4 bits: pca9536, pca9537
455 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
456 pca9556, pca9557, pca9574, tca6408, xra1202
458 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
463 40 bits: pca9505, pca9698
465 Now, max 24 bits chips and PCA953X compatible chips are
469 bool "Freescale MPC8XXX GPIO driver"
472 This driver supports the built-in GPIO controller of MPC8XXX CPUs.
473 Each GPIO bank is identified by its own entry in the device tree,
476 gpio-controller@fc00 {
478 compatible = "fsl,pq3-gpio";
482 By default, each bank is assumed to have 32 GPIOs, but the ngpios
483 setting is honored, so the number of GPIOs for each bank is
484 configurable to match the actual GPIO count of the SoC (e.g. the
485 32/32/23 banks of the P1022 SoC).
487 Aside from the standard functions of input/output mode, and output
488 value setting, the open-drain feature, which can configure individual
489 GPIOs to work as open-drain outputs, is supported.
491 config MPC83XX_SPISEL_BOOT
492 bool "Freescale MPC83XX SPISEL_BOOT driver"
493 depends on DM_GPIO && ARCH_MPC830X
495 GPIO driver to set/clear dedicated SPISEL_BOOT output on MPC83XX.
497 This pin is typically used as spi chip select to a spi nor flash.
500 bool "MediaTek MT7620 GPIO driver"
501 depends on DM_GPIO && SOC_MT7620
504 Device model driver for GPIO controller present in MediaTek MT7620
508 bool "MediaTek MT7621 GPIO driver"
509 depends on DM_GPIO && SOC_MT7628
512 Say yes here to support MediaTek MT7621 compatible GPIOs.
515 bool "Nexell GPIO driver"
518 Support GPIO access on Nexell SoCs. The GPIOs are arranged into
519 a number of banks (different for each SoC type) each with 32 GPIOs.
520 The GPIOs for a device are defined in the device tree with one node
524 bool "Nomadik GPIO driver"
527 Support GPIO access on ST-Ericsson Ux500 SoCs. The GPIOs are arranged
528 into a number of banks each with 32 GPIOs. The GPIOs for a device are
529 defined in the device tree with one node for each bank.