2 # RTC drivers configuration
8 bool "Enable Driver Model for RTC drivers"
11 Enable drver model for real-time-clock drivers. The RTC uclass
12 then provides the rtc_get()/rtc_set() interface, delegating to
13 drivers to perform the actual functions. See rtc.h for a
14 description of the API.
17 bool "Enable Driver Model for RTC drivers in SPL"
20 Enable drver model for real-time-clock drivers. The RTC uclass
21 then provides the rtc_get()/rtc_set() interface, delegating to
22 drivers to perform the actual functions. See rtc.h for a
23 description of the API.
26 bool "Enable Driver Model for RTC drivers in TPL"
29 Enable drver model for real-time-clock drivers. The RTC uclass
30 then provides the rtc_get()/rtc_set() interface, delegating to
31 drivers to perform the actual functions. See rtc.h for a
32 description of the API.
34 config RTC_ENABLE_32KHZ_OUTPUT
35 bool "Enable RTC 32Khz output"
37 Some real-time clocks support the output of 32kHz square waves (such as ds3231),
38 the config symbol choose Real Time Clock device 32Khz output feature.
41 bool "Enable PCF2127 driver"
44 The PCF2127 is a CMOS Real Time Clock (RTC) and calendar with an integrated
45 Temperature Compensated Crystal (Xtal) Oscillator (TCXO) and a 32.768 kHz quartz
46 crystal optimized for very high accuracy and very low power consumption. The PCF2127
47 has a selectable I2C-bus or SPI-bus, a backup battery switch-over circuit, a
48 programmable watchdog function, a timestamp function, and many other features.
51 bool "Enable DS1307 driver"
54 Support for Dallas Semiconductor (now Maxim) DS1307 and DS1338/9 and
55 compatible Real Time Clock devices.
58 bool "Enable ISL1208 driver"
61 The Renesas (formerly Intersil) ISL1208 is a I2C Real Time Clock (RTC) and
62 calendar with automatic leap year correction, 2-byte battery backed SRAM,
63 automatic power switch-over, alarm function and 15 selectable frequency
66 This driver supports reading and writing the RTC/calendar and detects
70 bool "Enable RV3029 driver"
73 The MicroCrystal RV3029 is a I2C Real Time Clock (RTC) with 8-byte
76 This driver supports reading and writing the RTC/calendar and the
77 battery-baced SRAM section.
80 bool "Enable RV8803 driver"
83 The Micro Crystal RV8803 is a high accuracy, ultra-low power I2C
84 Real Time Clock (RTC) with temperature compensation.
86 This driver supports reading and writing the RTC/calendar and
87 detects total power failures.
90 bool "Enable RX8010SJ driver"
93 Support for Epson RX8010SJ Real Time Clock devices.
96 bool "Enable RX8025 driver"
98 Support for Epson RX8025 Real Time Clock devices.
101 bool "Enable ARM AMBA PL031 RTC driver"
103 The ARM PrimeCell Real Time Clock (PL031) is an optional SoC
104 peripheral based on the Advanced Microcontroller Bus Architecture
105 (AMBA). It is emulated in QEMU virtual ARM machines.
108 bool "Enable Marvell RTC driver"
111 Enable Marvell RTC driver. This driver supports the rtc that is present
112 on some Marvell SoCs.
115 bool "Enable S35392A driver"
118 Enable s35392a driver which provides rtc get and set function.
121 bool "Enable MC146818 driver"
123 This is a widely used real-time clock chip originally by Motorola
124 and now available from NXP. It includes a battery-backed real-time
125 clock with a wide array of features and 50 bytes of general-purpose,
126 battery-backed RAM. The driver supports access to the clock and RAM.
129 bool "Enable M41T62 driver"
131 Enable driver for ST's M41T62 compatible RTC devices (like RV-4162).
132 It is a serial (I2C) real-time clock (RTC) with alarm.
135 bool "Enable STM32 RTC driver"
138 Enable STM32 RTC driver. This driver supports the rtc that is present