1# 2# RTC drivers configuration 3# 4 5menu "Real Time Clock" 6 7config DM_RTC 8 bool "Enable Driver Model for RTC drivers" 9 depends on DM 10 select LIB_DATE 11 help 12 Enable drver model for real-time-clock drivers. The RTC uclass 13 then provides the rtc_get()/rtc_set() interface, delegating to 14 drivers to perform the actual functions. See rtc.h for a 15 description of the API. 16 17config SPL_DM_RTC 18 bool "Enable Driver Model for RTC drivers in SPL" 19 depends on SPL_DM 20 help 21 Enable drver model for real-time-clock drivers. The RTC uclass 22 then provides the rtc_get()/rtc_set() interface, delegating to 23 drivers to perform the actual functions. See rtc.h for a 24 description of the API. 25 26config TPL_DM_RTC 27 bool "Enable Driver Model for RTC drivers in TPL" 28 depends on TPL_DM 29 help 30 Enable drver model for real-time-clock drivers. The RTC uclass 31 then provides the rtc_get()/rtc_set() interface, delegating to 32 drivers to perform the actual functions. See rtc.h for a 33 description of the API. 34 35config RTC_ENABLE_32KHZ_OUTPUT 36 bool "Enable RTC 32Khz output" 37 help 38 Some real-time clocks support the output of 32kHz square waves (such as ds3231), 39 the config symbol choose Real Time Clock device 32Khz output feature. 40 41config RTC_PCF2127 42 bool "Enable PCF2127 driver" 43 depends on DM_RTC 44 help 45 The PCF2127 is a CMOS Real Time Clock (RTC) and calendar with an integrated 46 Temperature Compensated Crystal (Xtal) Oscillator (TCXO) and a 32.768 kHz quartz 47 crystal optimized for very high accuracy and very low power consumption. The PCF2127 48 has a selectable I2C-bus or SPI-bus, a backup battery switch-over circuit, a 49 programmable watchdog function, a timestamp function, and many other features. 50 51config RTC_DS1307 52 bool "Enable DS1307 driver" 53 depends on DM_RTC 54 help 55 Support for Dallas Semiconductor (now Maxim) DS1307 and DS1338/9 and 56 compatible Real Time Clock devices. 57 58config RTC_ISL1208 59 bool "Enable ISL1208 driver" 60 depends on DM_RTC 61 help 62 The Renesas (formerly Intersil) ISL1208 is a I2C Real Time Clock (RTC) and 63 calendar with automatic leap year correction, 2-byte battery backed SRAM, 64 automatic power switch-over, alarm function and 15 selectable frequency 65 outputs. 66 67 This driver supports reading and writing the RTC/calendar and detects 68 total power failures. 69 70config RTC_RV3029 71 bool "Enable RV3029 driver" 72 depends on DM_RTC 73 help 74 The MicroCrystal RV3029 is a I2C Real Time Clock (RTC) with 8-byte 75 battery-backed SRAM. 76 77 This driver supports reading and writing the RTC/calendar and the 78 battery-baced SRAM section. 79 80config RTC_RV8803 81 bool "Enable RV8803 driver" 82 depends on DM_RTC 83 help 84 The Micro Crystal RV8803 is a high accuracy, ultra-low power I2C 85 Real Time Clock (RTC) with temperature compensation. 86 87 This driver supports reading and writing the RTC/calendar and 88 detects total power failures. 89 90config RTC_RX8010SJ 91 bool "Enable RX8010SJ driver" 92 depends on DM_RTC 93 help 94 Support for Epson RX8010SJ Real Time Clock devices. 95 96config RTC_RX8025 97 bool "Enable RX8025 driver" 98 help 99 Support for Epson RX8025 Real Time Clock devices. 100 101config RTC_PL031 102 bool "Enable ARM AMBA PL031 RTC driver" 103 help 104 The ARM PrimeCell Real Time Clock (PL031) is an optional SoC 105 peripheral based on the Advanced Microcontroller Bus Architecture 106 (AMBA). It is emulated in QEMU virtual ARM machines. 107 108config RTC_MV 109 bool "Enable Marvell RTC driver" 110 depends on DM_RTC 111 help 112 Enable Marvell RTC driver. This driver supports the rtc that is present 113 on some Marvell SoCs. 114 115config RTC_S35392A 116 bool "Enable S35392A driver" 117 select BITREVERSE 118 help 119 Enable s35392a driver which provides rtc get and set function. 120 121config RTC_MC146818 122 bool "Enable MC146818 driver" 123 help 124 This is a widely used real-time clock chip originally by Motorola 125 and now available from NXP. It includes a battery-backed real-time 126 clock with a wide array of features and 50 bytes of general-purpose, 127 battery-backed RAM. The driver supports access to the clock and RAM. 128 129config RTC_M41T62 130 bool "Enable M41T62 driver" 131 help 132 Enable driver for ST's M41T62 compatible RTC devices (like RV-4162). 133 It is a serial (I2C) real-time clock (RTC) with alarm. 134 135config RTC_STM32 136 bool "Enable STM32 RTC driver" 137 depends on DM_RTC 138 help 139 Enable STM32 RTC driver. This driver supports the rtc that is present 140 on some STM32 SoCs. 141endmenu 142