# # RTC drivers configuration # menu "Real Time Clock" config DM_RTC bool "Enable Driver Model for RTC drivers" depends on DM select LIB_DATE help Enable drver model for real-time-clock drivers. The RTC uclass then provides the rtc_get()/rtc_set() interface, delegating to drivers to perform the actual functions. See rtc.h for a description of the API. config SPL_DM_RTC bool "Enable Driver Model for RTC drivers in SPL" depends on SPL_DM help Enable drver model for real-time-clock drivers. The RTC uclass then provides the rtc_get()/rtc_set() interface, delegating to drivers to perform the actual functions. See rtc.h for a description of the API. config TPL_DM_RTC bool "Enable Driver Model for RTC drivers in TPL" depends on TPL_DM help Enable drver model for real-time-clock drivers. The RTC uclass then provides the rtc_get()/rtc_set() interface, delegating to drivers to perform the actual functions. See rtc.h for a description of the API. config RTC_ENABLE_32KHZ_OUTPUT bool "Enable RTC 32Khz output" help Some real-time clocks support the output of 32kHz square waves (such as ds3231), the config symbol choose Real Time Clock device 32Khz output feature. config RTC_ARMADA38X bool "Enable Armada 38x Marvell SoC RTC" depends on DM_RTC && ARCH_MVEBU help This adds support for the in-chip RTC that can be found in the Armada 38x Marvell's SoC devices. config RTC_PCF2127 bool "Enable PCF2127 driver" depends on DM_RTC help The PCF2127 is a CMOS Real Time Clock (RTC) and calendar with an integrated Temperature Compensated Crystal (Xtal) Oscillator (TCXO) and a 32.768 kHz quartz crystal optimized for very high accuracy and very low power consumption. The PCF2127 has a selectable I2C-bus or SPI-bus, a backup battery switch-over circuit, a programmable watchdog function, a timestamp function, and many other features. config RTC_DS1307 bool "Enable DS1307 driver" depends on DM_RTC help Support for Dallas Semiconductor (now Maxim) DS1307 and DS1338/9 and compatible Real Time Clock devices. config RTC_DS3232 bool "Enable DS3232 driver" depends on DM_RTC depends on DM_I2C help Support for Dallas Semiconductor (now Maxim) DS3232 compatible Real Time Clock devices. config RTC_EMULATION bool "Enable emulated RTC" depends on DM_RTC help On a board without hardware clock this software real time clock can be used. The initial time may be provided via the environment variable 'rtc_emul_epoch' as a decimal string indicating seconds since 1970-01-01. If the environment variable is missing, the build time is used to initialize the RTC. The time can be adjusted manually via the 'date' command or the 'sntp' command can be used to update the RTC with the time from a network time server. See CONFIG_CMD_SNTP and CONFIG_BOOTP_NTPSERVER. The RTC time is advanced according to CPU ticks. config RTC_ISL1208 bool "Enable ISL1208 driver" depends on DM_RTC help The Renesas (formerly Intersil) ISL1208 is a I2C Real Time Clock (RTC) and calendar with automatic leap year correction, 2-byte battery backed SRAM, automatic power switch-over, alarm function and 15 selectable frequency outputs. This driver supports reading and writing the RTC/calendar and detects total power failures. config RTC_PCF8563 tristate "Philips PCF8563" help If you say yes here you get support for the Philips PCF8563 RTC and compatible chips. config RTC_RV3028 bool "Enable RV3028 driver" depends on DM_RTC help The MicroCrystal RV3028 is a I2C Real Time Clock (RTC) config RTC_RV3029 bool "Enable RV3029 driver" depends on DM_RTC help The MicroCrystal RV3029 is a I2C Real Time Clock (RTC) with 8-byte battery-backed SRAM. This driver supports reading and writing the RTC/calendar and the battery-baced SRAM section. config RTC_RV8803 bool "Enable RV8803 driver" depends on DM_RTC help The Micro Crystal RV8803 is a high accuracy, ultra-low power I2C Real Time Clock (RTC) with temperature compensation. This driver supports reading and writing the RTC/calendar and detects total power failures. config RTC_RX8010SJ bool "Enable RX8010SJ driver" depends on DM_RTC help Support for Epson RX8010SJ Real Time Clock devices. config RTC_RX8025 bool "Enable RX8025 driver" depends on DM_RTC help Support for Epson RX8025 Real Time Clock devices. config RTC_PL031 bool "Enable ARM AMBA PL031 RTC driver" help The ARM PrimeCell Real Time Clock (PL031) is an optional SoC peripheral based on the Advanced Microcontroller Bus Architecture (AMBA). It is emulated in QEMU virtual ARM machines. config RTC_MV bool "Enable Marvell RTC driver" depends on DM_RTC help Enable Marvell RTC driver. This driver supports the rtc that is present on some Marvell SoCs. config RTC_S35392A bool "Enable S35392A driver" select BITREVERSE help Enable s35392a driver which provides rtc get and set function. config RTC_MC146818 bool "Enable MC146818 driver" help This is a widely used real-time clock chip originally by Motorola and now available from NXP. It includes a battery-backed real-time clock with a wide array of features and 50 bytes of general-purpose, battery-backed RAM. The driver supports access to the clock and RAM. config MCFRTC bool "Use common CF RTC driver" depends on M68K config SYS_MCFRTC_BASE hex "Base address for RTC in immap.h" depends on MCFRTC config RTC_M41T62 bool "Enable M41T62 driver" help Enable driver for ST's M41T62 compatible RTC devices (like RV-4162). It is a serial (I2C) real-time clock (RTC) with alarm. config RTC_STM32 bool "Enable STM32 RTC driver" depends on DM_RTC help Enable STM32 RTC driver. This driver supports the rtc that is present on some STM32 SoCs. config RTC_ABX80X bool "Enable Abracon ABx80x RTC driver" depends on DM_RTC help If you say yes here you get support for Abracon AB080X and AB180X families of ultra-low-power battery- and capacitor-backed real-time clock chips. config RTC_DAVINCI bool "Enable TI OMAP RTC driver" depends on ARCH_DAVINCI || ARCH_OMAP2PLUS help Say "yes" here to support the on chip real time clock present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx. config RTC_ZYNQMP bool "Enable ZynqMP RTC driver" depends on ARCH_ZYNQMP help Say "yes" here to support the on chip real time clock present on Xilinx ZynqMP SoC. endmenu