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" 120source "drivers/i2c/Kconfig.ambiq" 121source "drivers/i2c/Kconfig.andes_atciic100" 122source "drivers/i2c/Kconfig.b91" 123source "drivers/i2c/Kconfig.bcm_iproc" 124source "drivers/i2c/Kconfig.cc13xx_cc26xx" 125source "drivers/i2c/Kconfig.dw" 126source "drivers/i2c/Kconfig.ene" 127source "drivers/i2c/Kconfig.esp32" 128source "drivers/i2c/Kconfig.gd32" 129source "drivers/i2c/Kconfig.gpio" 130source "drivers/i2c/Kconfig.ifx_cat1" 131source "drivers/i2c/Kconfig.ifx_xmc4" 132source "drivers/i2c/Kconfig.it8xxx2" 133source "drivers/i2c/Kconfig.i2c_emul" 134source "drivers/i2c/Kconfig.litex" 135source "drivers/i2c/Kconfig.lpc11u6x" 136source "drivers/i2c/Kconfig.max32" 137source "drivers/i2c/Kconfig.mchp_mss" 138source "drivers/i2c/Kconfig.mcux" 139source "drivers/i2c/Kconfig.npcx" 140source "drivers/i2c/Kconfig.nrfx" 141source "drivers/i2c/Kconfig.numaker" 142source "drivers/i2c/Kconfig.renesas_ra" 143source "drivers/i2c/Kconfig.rcar" 144source "drivers/i2c/Kconfig.sam0" 145source "drivers/i2c/Kconfig.sam_twihs" 146source "drivers/i2c/Kconfig.sbcon" 147source "drivers/i2c/Kconfig.sc18im704" 148source "drivers/i2c/Kconfig.sedi" 149source "drivers/i2c/Kconfig.sifive" 150source "drivers/i2c/Kconfig.smartbond" 151source "drivers/i2c/Kconfig.stm32" 152 153source "drivers/i2c/Kconfig.tca954x" 154source "drivers/i2c/Kconfig.test" 155source "drivers/i2c/Kconfig.xec" 156source "drivers/i2c/Kconfig.xilinx_axi" 157 158config I2C_INIT_PRIORITY 159 int "Init priority" 160 default KERNEL_INIT_PRIORITY_DEVICE 161 help 162 I2C device driver initialization priority. 163 164 165module = I2C 166module-str = i2c 167source "subsys/logging/Kconfig.template.log_config" 168 169config I2C_GECKO 170 bool "Gecko I2C driver" 171 default y 172 depends on DT_HAS_SILABS_GECKO_I2C_ENABLED 173 select SOC_GECKO_I2C 174 select PINCTRL if SOC_FAMILY_SILABS_S2 175 help 176 Enable the SiLabs Gecko I2C bus driver. 177 178config I2C_SAM_TWIM 179 bool "Atmel SAM (TWIM) I2C driver" 180 default y 181 depends on DT_HAS_ATMEL_SAM_I2C_TWIM_ENABLED 182 select PINCTRL 183 help 184 Enable Atmel SAM MCU Family (TWIM) I2C bus driver. 185 186config I2C_SAM_TWI 187 bool "Atmel SAM (TWI) I2C driver" 188 default y 189 depends on DT_HAS_ATMEL_SAM_I2C_TWI_ENABLED 190 select PINCTRL 191 help 192 Enable Atmel SAM MCU Family (TWI) I2C bus driver. 193 194config I2C_MCUX 195 bool "MCUX I2C driver" 196 default y 197 depends on DT_HAS_NXP_KINETIS_I2C_ENABLED 198 select PINCTRL 199 help 200 Enable the mcux I2C driver. 201 202config I2C_MCUX_LPI2C 203 bool "MCUX LPI2C driver" 204 default y 205 depends on DT_HAS_NXP_LPI2C_ENABLED 206 depends on CLOCK_CONTROL 207 select PINCTRL 208 help 209 Enable the mcux LPI2C driver. 210 211config I2C_MCUX_LPI2C_BUS_RECOVERY 212 bool "Bus recovery support" 213 depends on I2C_MCUX_LPI2C && PINCTRL 214 select I2C_BITBANG 215 help 216 Enable LPI2C driver bus recovery support via GPIO bitbanging. 217 218config I2C_IMX 219 bool "i.MX I2C driver" 220 default y 221 depends on DT_HAS_FSL_IMX21_I2C_ENABLED 222 select PINCTRL 223 help 224 Enable the i.MX I2C driver. 225 226config I2C_CC32XX 227 bool "CC32XX I2C driver" 228 default y 229 depends on DT_HAS_TI_CC32XX_I2C_ENABLED 230 select PINCTRL 231 help 232 Enable the CC32XX I2C driver. 233 234config I2C_BITBANG 235 bool 236 help 237 Enable library used for software driven (bit banging) I2C support 238 239config I2C_NIOS2 240 bool "Nios-II I2C driver" 241 default y 242 depends on DT_HAS_ALTR_NIOS2_I2C_ENABLED 243 help 244 Enable the Nios-II I2C driver. 245 246config I2C_RV32M1_LPI2C 247 bool "RV32M1 LPI2C driver" 248 default y 249 depends on DT_HAS_OPENISA_RV32M1_LPI2C_ENABLED 250 depends on CLOCK_CONTROL 251 select PINCTRL 252 help 253 Enable the RV32M1 LPI2C driver. 254 255config GPIO_I2C_SWITCH 256 bool "GPIO controlled I2C bus switch" 257 default y 258 depends on DT_HAS_GPIO_I2C_SWITCH_ENABLED 259 help 260 Enable GPIO controlled I2C bus switch driver. 261 262endif # I2C 263
