1# 2# GPIO infrastructure and drivers 3# 4 5menu "GPIO Support" 6 7config DM_GPIO 8 bool "Enable Driver Model for GPIO drivers" 9 depends on DM 10 help 11 Enable driver model for GPIO access. The standard GPIO 12 interface (gpio_get_value(), etc.) is then implemented by 13 the GPIO uclass. Drivers provide methods to query the 14 particular GPIOs that they provide. The uclass interface 15 is defined in include/asm-generic/gpio.h. 16 17config GPIO_HOG 18 bool "Enable GPIO hog support" 19 depends on DM_GPIO 20 default n 21 help 22 Enable gpio hog support 23 The GPIO chip may contain GPIO hog definitions. GPIO hogging 24 is a mechanism providing automatic GPIO request and config- 25 uration as part of the gpio-controller's driver probe function. 26 27config ALTERA_PIO 28 bool "Altera PIO driver" 29 depends on DM_GPIO 30 help 31 Select this to enable PIO for Altera devices. Please find 32 details on the "Embedded Peripherals IP User Guide" of Altera. 33 34config BCM6345_GPIO 35 bool "BCM6345 GPIO driver" 36 depends on DM_GPIO && ARCH_BMIPS 37 help 38 This driver supports the GPIO banks on BCM6345 SoCs. 39 40config DWAPB_GPIO 41 bool "DWAPB GPIO driver" 42 depends on DM && DM_GPIO 43 default n 44 help 45 Support for the Designware APB GPIO driver. 46 47config AT91_GPIO 48 bool "AT91 PIO GPIO driver" 49 depends on DM_GPIO 50 default n 51 help 52 Say yes here to select AT91 PIO GPIO driver. AT91 PIO 53 controller manages up to 32 fully programmable input/output 54 lines. Each I/O line may be dedicated as a general-purpose 55 I/O or be assigned to a function of an embedded peripheral. 56 The assignment to a function of an embedded peripheral is 57 the responsibility of AT91 Pinctrl driver. This driver is 58 responsible for the general-purpose I/O. 59 60config ATMEL_PIO4 61 bool "ATMEL PIO4 driver" 62 depends on DM_GPIO 63 default n 64 help 65 Say yes here to support the Atmel PIO4 driver. 66 The PIO4 is new version of Atmel PIO controller, which manages 67 up to 128 fully programmable input/output lines. Each I/O line 68 may be dedicated as a general purpose I/O or be assigned to 69 a function of an embedded peripheral. 70 71config INTEL_BROADWELL_GPIO 72 bool "Intel Broadwell GPIO driver" 73 depends on DM 74 help 75 This driver supports Broadwell U devices which have an expanded 76 GPIO feature set. The difference is large enough to merit a separate 77 driver from the common Intel ICH6 driver. It supports a total of 78 95 GPIOs which can be configured from the device tree. 79 80config INTEL_ICH6_GPIO 81 bool "Intel ICH6 compatible legacy GPIO driver" 82 depends on DM_GPIO 83 help 84 Say yes here to select Intel ICH6 compatible legacy GPIO driver. 85 86config IMX_RGPIO2P 87 bool "i.MX7ULP RGPIO2P driver" 88 depends on DM 89 default n 90 help 91 This driver supports i.MX7ULP Rapid GPIO2P controller. 92 93config LPC32XX_GPIO 94 bool "LPC32XX GPIO driver" 95 depends on DM 96 default n 97 help 98 Support for the LPC32XX GPIO driver. 99 100config MSM_GPIO 101 bool "Qualcomm GPIO driver" 102 depends on DM_GPIO 103 default n 104 help 105 Support GPIO controllers on Qualcomm Snapdragon family of SoCs. 106 This controller have single bank (default name "soc"), every 107 gpio has it's own set of registers. 108 Only simple GPIO operations are supported (get/set, change of 109 direction and checking pin function). 110 Supported devices: 111 - APQ8016 112 - MSM8916 113 114config OMAP_GPIO 115 bool "TI OMAP GPIO driver" 116 depends on ARCH_OMAP2PLUS 117 default y 118 help 119 Support GPIO controllers on the TI OMAP3/4/5 and related (such as 120 AM335x/AM43xx/AM57xx/DRA7xx/etc) families of SoCs. 121 122config CMD_PCA953X 123 bool "Enable the pca953x command" 124 help 125 Deprecated: This should be converted to driver model. 126 127 This command provides access to a pca953x GPIO device using the 128 legacy GPIO interface. Several subcommands are provided which mirror 129 the standard 'gpio' command. It should use that instead. 130 131config PM8916_GPIO 132 bool "Qualcomm PM8916 PMIC GPIO/keypad driver" 133 depends on DM_GPIO && PMIC_PM8916 134 help 135 Support for GPIO pins and power/reset buttons found on 136 Qualcomm PM8916 PMIC. 137 Default name for GPIO bank is "pm8916". 138 Power and reset buttons are placed in "pm8916_key" bank and 139 have gpio numbers 0 and 1 respectively. 140 141config PCF8575_GPIO 142 bool "PCF8575 I2C GPIO Expander driver" 143 depends on DM_GPIO && DM_I2C 144 help 145 Support for PCF8575 I2C 16-bit GPIO expander. Most of these 146 chips are from NXP and TI. 147 148config ROCKCHIP_GPIO 149 bool "Rockchip GPIO driver" 150 depends on DM_GPIO 151 help 152 Support GPIO access on Rockchip SoCs. The GPIOs are arranged into 153 a number of banks (different for each SoC type) each with 32 GPIOs. 154 The GPIOs for a device are defined in the device tree with one node 155 for each bank. 156 157config ROCKCHIP_GPIO_V2 158 bool "Rockchip GPIO driver version 2.0" 159 depends on ROCKCHIP_GPIO 160 default n 161 help 162 Support GPIO access on Rockchip SoCs. The GPIOs are arranged into 163 a number of banks (different for each SoC type) each with 32 GPIOs. 164 The GPIOs for a device are defined in the device tree with one node 165 for each bank. 166 167 Support version 2.0 GPIO controller, which support write enable bits 168 for some registers, such as dr, ddr. 169 170config SANDBOX_GPIO 171 bool "Enable sandbox GPIO driver" 172 depends on SANDBOX && DM && DM_GPIO 173 help 174 This driver supports some simulated GPIOs which can be adjusted 175 using 'back door' functions like sandbox_gpio_set_value(). Then the 176 GPIOs can be inspected through the normal get_get_value() 177 interface. The purpose of this is to allow GPIOs to be used as 178 normal in sandbox, perhaps with test code actually driving the 179 behaviour of those GPIOs. 180 181config SANDBOX_GPIO_COUNT 182 int "Number of sandbox GPIOs" 183 depends on SANDBOX_GPIO 184 default 128 185 help 186 The sandbox driver can support any number of GPIOs. Generally these 187 are specified using the device tree. But you can also have a number 188 of 'anonymous' GPIOs that do not belong to any device or bank. 189 Select a suitable value depending on your needs. 190 191config CMD_TCA642X 192 bool "tca642x - Command to access tca642x state" 193 help 194 DEPRECATED - This needs conversion to driver model 195 196 This provides a way to looking at the pin state of this device. 197 This mirrors the 'gpio' command and that should be used in preference 198 to custom code. 199 200config TEGRA_GPIO 201 bool "Tegra20..210 GPIO driver" 202 depends on DM_GPIO 203 help 204 Support for the GPIO controller contained in NVIDIA Tegra20 through 205 Tegra210. 206 207config TEGRA186_GPIO 208 bool "Tegra186 GPIO driver" 209 depends on DM_GPIO 210 help 211 Support for the GPIO controller contained in NVIDIA Tegra186. This 212 covers both the "main" and "AON" controller instances, even though 213 they have slightly different register layout. 214 215config GPIO_UNIPHIER 216 bool "UniPhier GPIO" 217 depends on ARCH_UNIPHIER 218 help 219 Say yes here to support UniPhier GPIOs. 220 221config VYBRID_GPIO 222 bool "Vybrid GPIO driver" 223 depends on DM 224 default n 225 help 226 Say yes here to support Vybrid vf610 GPIOs. 227 228config PIC32_GPIO 229 bool "Microchip PIC32 GPIO driver" 230 depends on DM_GPIO && MACH_PIC32 231 default y 232 help 233 Say yes here to support Microchip PIC32 GPIOs. 234 235config STM32F7_GPIO 236 bool "ST STM32 GPIO driver" 237 depends on DM_GPIO && STM32 238 default y 239 help 240 Device model driver support for STM32 GPIO controller. It should be 241 usable on many stm32 families like stm32f4 & stm32H7. 242 Tested on STM32F7. 243 244config MVEBU_GPIO 245 bool "Marvell MVEBU GPIO driver" 246 depends on DM_GPIO && ARCH_MVEBU 247 default y 248 help 249 Say yes here to support Marvell MVEBU (Armada XP/38x) GPIOs. 250 251config ZYNQ_GPIO 252 bool "Zynq GPIO driver" 253 depends on DM_GPIO && (ARCH_ZYNQ || ARCH_ZYNQMP) 254 default y 255 help 256 Supports GPIO access on Zynq SoC. 257 258config DM_74X164 259 bool "74x164 serial-in/parallel-out 8-bits shift register" 260 depends on DM_GPIO 261 help 262 Driver for 74x164 compatible serial-in/parallel-out 8-outputs 263 shift registers, such as 74lv165, 74hc595. 264 This driver can be used to provide access to more gpio outputs. 265 266config DM_PCA953X 267 bool "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports" 268 depends on DM_GPIO 269 help 270 Say yes here to provide access to several register-oriented 271 SMBus I/O expanders, made mostly by NXP or TI. Compatible 272 models include: 273 274 4 bits: pca9536, pca9537 275 276 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, 277 pca9556, pca9557, pca9574, tca6408, xra1202 278 279 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, 280 tca6416 281 282 24 bits: tca6424 283 284 40 bits: pca9505, pca9698 285 286 Now, max 24 bits chips and PCA953X compatible chips are 287 supported 288 289config MPC85XX_GPIO 290 bool "Freescale MPC85XX GPIO driver" 291 depends on DM_GPIO 292 help 293 This driver supports the built-in GPIO controller of MPC85XX CPUs. 294 Each GPIO bank is identified by its own entry in the device tree, 295 i.e. 296 297 gpio-controller@fc00 { 298 #gpio-cells = <2>; 299 compatible = "fsl,pq3-gpio"; 300 reg = <0xfc00 0x100> 301 } 302 303 By default, each bank is assumed to have 32 GPIOs, but the ngpios 304 setting is honored, so the number of GPIOs for each bank is 305 configurable to match the actual GPIO count of the SoC (e.g. the 306 32/32/23 banks of the P1022 SoC). 307 308 Aside from the standard functions of input/output mode, and output 309 value setting, the open-drain feature, which can configure individual 310 GPIOs to work as open-drain outputs, is supported. 311 312 The driver has been tested on MPC85XX, but it is likely that other 313 PowerQUICC III devices will work as well. 314endmenu 315