1# I2C configuration options 2 3# Copyright (c) 2015 Intel Corporation 4# SPDX-License-Identifier: Apache-2.0 5 6# 7# I2C options 8# 9menuconfig I2C 10 bool "Inter-Integrated Circuit (I2C) bus drivers" 11 help 12 Enable I2C Driver Configuration 13 14if I2C 15 16config I2C_SHELL 17 bool "I2C Shell" 18 depends on SHELL 19 help 20 Enable I2C Shell. 21 22 The I2C shell supports scanning, bus recovery, I2C read and write 23 operations. 24 25config I2C_STATS 26 bool "I2C device Stats" 27 depends on STATS 28 help 29 Enable I2C Stats. 30 31config I2C_DUMP_MESSAGES 32 bool "Log I2C transactions" 33 depends on LOG 34 depends on I2C_LOG_LEVEL_DBG 35 help 36 Dump every I2C transaction to the system log as debug level log messages. 37 38config I2C_DUMP_MESSAGES_ALLOWLIST 39 bool "Use allowlist for logging of I2C transactions" 40 depends on I2C_DUMP_MESSAGES 41 depends on DT_HAS_ZEPHYR_I2C_DUMP_ALLOWLIST_ENABLED 42 help 43 Use allowlist to specify which devices transactions should be logged. 44 The allowlist is defined in the devicetree using the compatible string of 45 "zephyr,i2c-dump-allowlist" and phandles to the devices that need to be traced. 46 Example of devicetree node: 47 i2c-dump-allowlist { 48 compatible = "zephyr,i2c-dump-allowlist"; 49 devices = < &display0 >, < &sensor3 >; 50 }; 51 52config I2C_CALLBACK 53 bool "I2C asynchronous callback API" 54 help 55 API and implementations of i2c_transfer_cb. 56 57config I2C_ALLOW_NO_STOP_TRANSACTIONS 58 bool "Allows I2C transfers with no STOP on the last transaction [DEPRECATED]" 59 depends on !I2C_NRFX_TWI 60 depends on !I2C_NRFX_TWIM 61 depends on !I2C_STM32 62 depends on !I2C_GD32 63 depends on !I2C_ESP32 64 depends on !I2C_DW 65 select DEPRECATED 66 help 67 Allow I2C transactions with no STOP on the last message. This is 68 unsupported and can leave the bus in an unexpected state. The option 69 will be removed in Zephyr 4.1. 70 71config I2C_RTIO 72 bool "I2C RTIO API" 73 select EXPERIMENTAL 74 select RTIO 75 select RTIO_WORKQ 76 help 77 API and implementations of I2C for RTIO 78 79if I2C_RTIO 80config I2C_RTIO_SQ_SIZE 81 int "Submission queue size for blocking calls" 82 default 4 83 help 84 Blocking i2c calls when I2C_RTIO is enabled are copied into a per driver 85 submission queue. The queue depth determines the number of possible i2c_msg 86 structs that may be in the array given to i2c_transfer. A sensible default 87 is going to be 4 given the device address, register address, and a value 88 to be read or written. 89 90config I2C_RTIO_CQ_SIZE 91 int "Completion queue size for blocking calls" 92 default 4 93 help 94 Blocking i2c calls when I2C_RTIO is enabled are copied into a per driver 95 submission queue. The queue depth determines the number of possible i2c_msg 96 structs that may be in the array given to i2c_transfer. A sensible default 97 is going to be 4 given the device address, register address, and a value 98 to be read or written. 99 100config I2C_RTIO_FALLBACK_MSGS 101 int "Number of available i2c_msg structs for the default handler to use" 102 default 4 103 help 104 When RTIO is used with a driver that does not yet implement the submit API 105 natively the submissions are converted back to struct i2c_msg values that 106 are given to i2c_transfer. This requires some number of msgs be available to convert 107 the submissions into on the stack. MISRA rules dictate we must know this in 108 advance. 109 110 In all likelihood 4 is going to work for everyone, but in case you do end up with 111 an issue where you are using RTIO, your driver does not implement submit natively, 112 and get an error relating to not enough i2c msgs this is the Kconfig to manipulate. 113 114endif # I2C_RTIO 115 116 117# Include these first so that any properties (e.g. defaults) below can be 118# overridden (by defining symbols in multiple locations) 119source "drivers/i2c/target/Kconfig" 120# zephyr-keep-sorted-start 121source "drivers/i2c/Kconfig.ambiq" 122source "drivers/i2c/Kconfig.andes_atciic100" 123source "drivers/i2c/Kconfig.b91" 124source "drivers/i2c/Kconfig.bcm_iproc" 125source "drivers/i2c/Kconfig.cc13xx_cc26xx" 126source "drivers/i2c/Kconfig.cdns" 127source "drivers/i2c/Kconfig.dw" 128source "drivers/i2c/Kconfig.ene" 129source "drivers/i2c/Kconfig.esp32" 130source "drivers/i2c/Kconfig.gd32" 131source "drivers/i2c/Kconfig.gpio" 132source "drivers/i2c/Kconfig.i2c_emul" 133source "drivers/i2c/Kconfig.ifx_cat1" 134source "drivers/i2c/Kconfig.ifx_xmc4" 135source "drivers/i2c/Kconfig.it8xxx2" 136source "drivers/i2c/Kconfig.litex" 137source "drivers/i2c/Kconfig.lpc11u6x" 138source "drivers/i2c/Kconfig.max32" 139source "drivers/i2c/Kconfig.mchp_mss" 140source "drivers/i2c/Kconfig.mcux" 141source "drivers/i2c/Kconfig.npcx" 142source "drivers/i2c/Kconfig.nrfx" 143source "drivers/i2c/Kconfig.numaker" 144source "drivers/i2c/Kconfig.omap" 145source "drivers/i2c/Kconfig.rcar" 146source "drivers/i2c/Kconfig.renesas_ra" 147source "drivers/i2c/Kconfig.renesas_rz" 148source "drivers/i2c/Kconfig.sam0" 149source "drivers/i2c/Kconfig.sam_twihs" 150source "drivers/i2c/Kconfig.sbcon" 151source "drivers/i2c/Kconfig.sc18im704" 152source "drivers/i2c/Kconfig.sedi" 153source "drivers/i2c/Kconfig.sifive" 154source "drivers/i2c/Kconfig.smartbond" 155source "drivers/i2c/Kconfig.stm32" 156source "drivers/i2c/Kconfig.sy1xx" 157source "drivers/i2c/Kconfig.tca954x" 158source "drivers/i2c/Kconfig.test" 159source "drivers/i2c/Kconfig.xec" 160source "drivers/i2c/Kconfig.xilinx_axi" 161# zephyr-keep-sorted-stop 162 163config I2C_INIT_PRIORITY 164 int "Init priority" 165 default KERNEL_INIT_PRIORITY_DEVICE 166 help 167 I2C device driver initialization priority. 168 169 170module = I2C 171module-str = i2c 172source "subsys/logging/Kconfig.template.log_config" 173 174config I2C_GECKO 175 bool "Gecko I2C driver" 176 default y 177 depends on DT_HAS_SILABS_GECKO_I2C_ENABLED 178 select SOC_GECKO_I2C 179 select PINCTRL if SOC_FAMILY_SILABS_S2 180 help 181 Enable the SiLabs Gecko I2C bus driver. 182 183config I2C_SAM_TWIM 184 bool "Atmel SAM (TWIM) I2C driver" 185 default y 186 depends on DT_HAS_ATMEL_SAM_I2C_TWIM_ENABLED 187 select PINCTRL 188 help 189 Enable Atmel SAM MCU Family (TWIM) I2C bus driver. 190 191config I2C_SAM_TWI 192 bool "Atmel SAM (TWI) I2C driver" 193 default y 194 depends on DT_HAS_ATMEL_SAM_I2C_TWI_ENABLED 195 select PINCTRL 196 help 197 Enable Atmel SAM MCU Family (TWI) I2C bus driver. 198 199config I2C_MCUX 200 bool "MCUX I2C driver" 201 default y 202 depends on DT_HAS_NXP_KINETIS_I2C_ENABLED 203 select PINCTRL 204 help 205 Enable the mcux I2C driver. 206 207config I2C_MCUX_LPI2C 208 bool "MCUX LPI2C driver" 209 default y 210 depends on DT_HAS_NXP_LPI2C_ENABLED 211 depends on CLOCK_CONTROL 212 select PINCTRL 213 help 214 Enable the mcux LPI2C driver. 215 216config I2C_MCUX_LPI2C_BUS_RECOVERY 217 bool "Bus recovery support" 218 depends on I2C_MCUX_LPI2C && PINCTRL 219 select I2C_BITBANG 220 help 221 Enable LPI2C driver bus recovery support via GPIO bitbanging. 222 223config I2C_IMX 224 bool "i.MX I2C driver" 225 default y 226 depends on DT_HAS_FSL_IMX21_I2C_ENABLED 227 select PINCTRL 228 help 229 Enable the i.MX I2C driver. 230 231config I2C_CC32XX 232 bool "CC32XX I2C driver" 233 default y 234 depends on DT_HAS_TI_CC32XX_I2C_ENABLED 235 select PINCTRL 236 help 237 Enable the CC32XX I2C driver. 238 239config I2C_BITBANG 240 bool 241 help 242 Enable library used for software driven (bit banging) I2C support 243 244config I2C_NIOS2 245 bool "Nios-II I2C driver" 246 default y 247 depends on DT_HAS_ALTR_NIOS2_I2C_ENABLED 248 help 249 Enable the Nios-II I2C driver. 250 251config I2C_RV32M1_LPI2C 252 bool "RV32M1 LPI2C driver" 253 default y 254 depends on DT_HAS_OPENISA_RV32M1_LPI2C_ENABLED 255 depends on CLOCK_CONTROL 256 select PINCTRL 257 help 258 Enable the RV32M1 LPI2C driver. 259 260config GPIO_I2C_SWITCH 261 bool "GPIO controlled I2C bus switch" 262 default y 263 depends on DT_HAS_GPIO_I2C_SWITCH_ENABLED 264 help 265 Enable GPIO controlled I2C bus switch driver. 266 267config I2C_NXP_II2C 268 bool "NXP i.MX8M serial I2C driver" 269 default y 270 depends on DT_HAS_NXP_II2C_ENABLED 271 help 272 Enable the NXP II2C driver. 273 274endif # I2C 275
