CONFIG_REGMAP (not configurable)

modulename: regmap.ko

and/or

regcache-rbtree.ko

configname: CONFIG_REGMAP

Linux Kernel Configuration
└─>Device Drivers
└─>Generic Driver Options
└─>REGMAP
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
selects
CONFIG_IRQ_DOMAIN
CONFIG_MDIO_BUS

is depended by
CONFIG_SUNXI_RSB
CONFIG_VEXPRESS_CONFIG
CONFIG_EEPROM_AT24
CONFIG_EEPROM_93XX46
CONFIG_NET_DSA_AR9331
CONFIG_NET_DSA_QCA8K
CONFIG_NET_DSA_XRS700X
CONFIG_NET_DSA_REALTEK
CONFIG_NET_DSA_SMSC_LAN9303
CONFIG_TI_CPSW
CONFIG_TI_CPSW_SWITCHDEV
CONFIG_CAN_MCP251XFD
CONFIG_MT7622_WMAC
CONFIG_MT7986_WMAC
CONFIG_SERIAL_8250_ASPEED_VUART
CONFIG_I2C_DESIGNWARE_CORE
CONFIG_SPI_ALTERA_CORE
CONFIG_PINCTRL_SX150X
CONFIG_PINCTRL_BCM63XX
CONFIG_PINCTRL_IMX
CONFIG_GPIO_REGMAP
CONFIG_SENSORS_ADT7X10
CONFIG_SENSORS_ASPEED
CONFIG_SENSORS_LAN966X
CONFIG_SENSORS_MLXREG_FAN
CONFIG_SENSORS_LM83
CONFIG_SENSORS_NCT6775_CORE
CONFIG_SENSORS_TMP401
CONFIG_INTEL_BXT_PMIC_THERMAL
CONFIG_KHADAS_MCU_FAN_THERMAL
CONFIG_MLX_WDT
CONFIG_MFD_MADERA
CONFIG_MFD_PM8XXX
CONFIG_MFD_TI_AM335X_TSCADC
CONFIG_MFD_TPS65086
CONFIG_MFD_TPS65912
CONFIG_MFD_ARIZONA
CONFIG_MFD_STM32_LPTIMER
CONFIG_MFD_STM32_TIMERS
CONFIG_MFD_WCD934X
CONFIG_MFD_ATC260X
CONFIG_MFD_ACER_A500_EC
CONFIG_REGULATOR_HI6421V600
CONFIG_CEC_CH7322
CONFIG_CEC_MESON_G12A_AO
CONFIG_CEC_STM32
CONFIG_DVB_USB_AF9015
CONFIG_VIDEO_MUX
CONFIG_DVB_AF9013
CONFIG_DVB_RTL2830
CONFIG_DRM_PANEL_ILITEK_IL9322
CONFIG_DRM_LOGICVC
CONFIG_DRM_SSD130X_SPI
CONFIG_BACKLIGHT_QCOM_WLED
CONFIG_SND_HDA_CORE
CONFIG_SND_PXA2XX_SOC_TOSA
CONFIG_SND_PXA2XX_SOC_E740
CONFIG_SND_PXA2XX_SOC_E750
CONFIG_SND_PXA2XX_SOC_E800
CONFIG_SND_PXA2XX_SOC_EM_X270
CONFIG_SND_PXA2XX_SOC_PALM27X
CONFIG_SND_SOC_ZYLONITE
CONFIG_SND_PXA2XX_SOC_MIOA701
CONFIG_SND_SUN8I_ADDA_PR_REGMAP
CONFIG_SND_SOC_CS35L45_SPI
CONFIG_SND_SOC_CS35L45_I2C
CONFIG_SND_SOC_CS42L42
CONFIG_SND_SOC_CS42L83
CONFIG_SND_SOC_JZ4725B_CODEC
CONFIG_SND_SOC_JZ4760_CODEC
CONFIG_SND_SOC_JZ4770_CODEC
CONFIG_SND_SOC_WM8731_I2C
CONFIG_SND_SOC_WM8731_SPI
CONFIG_SND_SOC_ZL38060
CONFIG_LEDS_TI_LMU_COMMON
CONFIG_RTC_DRV_GAMECUBE
CONFIG_HMS_ANYBUSS_BUS
CONFIG_MLXREG_HOTPLUG
CONFIG_MLXREG_IO
CONFIG_MLXREG_LC
CONFIG_INTEL_BXTWC_PMIC_TMU
CONFIG_MLX_PLATFORM
CONFIG_COMMON_CLK_HI655X
CONFIG_COMMON_CLK_MESON_REGMAP
CONFIG_APPLE_PMGR_PWRSTATE
CONFIG_ASPEED_LPC_CTRL
CONFIG_ASPEED_LPC_SNOOP
CONFIG_ASPEED_UART_ROUTING
CONFIG_ASPEED_P2A_CTRL
CONFIG_MTK_INFRACFG
CONFIG_MTK_PMIC_WRAP
CONFIG_MTK_SCPSYS
CONFIG_MTK_SCPSYS_PM_DOMAINS
CONFIG_QCOM_CPR
CONFIG_BMA400
CONFIG_BMC150_ACCEL
CONFIG_BMI088_ACCEL
CONFIG_STM32_DFSDM_CORE
CONFIG_BME680
CONFIG_LTC2688
CONFIG_MPU3050
CONFIG_BOSCH_BNO055_SERIAL
CONFIG_GP2AP002
CONFIG_BMP280
CONFIG_BMP280_SPI
CONFIG_ZPA2326
CONFIG_PHY_INTEL_LGM_COMBO
CONFIG_FPGA_DFL_NIOS_INTEL_PAC_N3000
CONFIG_BT_INTEL