2 # RTC drivers configuration
8 bool "Enable Driver Model for RTC drivers"
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.
18 bool "Enable Driver Model for RTC drivers in SPL"
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.
27 bool "Enable Driver Model for RTC drivers in TPL"
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.
35 config RTC_ENABLE_32KHZ_OUTPUT
36 bool "Enable RTC 32Khz output"
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.
42 bool "Enable Armada 38x Marvell SoC RTC"
43 depends on DM_RTC && ARCH_MVEBU
45 This adds support for the in-chip RTC that can be found in the
46 Armada 38x Marvell's SoC devices.
49 bool "Enable PCF2127 driver"
52 The PCF2127 is a CMOS Real Time Clock (RTC) and calendar with an integrated
53 Temperature Compensated Crystal (Xtal) Oscillator (TCXO) and a 32.768 kHz quartz
54 crystal optimized for very high accuracy and very low power consumption. The PCF2127
55 has a selectable I2C-bus or SPI-bus, a backup battery switch-over circuit, a
56 programmable watchdog function, a timestamp function, and many other features.
59 bool "Enable DS1307 driver"
62 Support for Dallas Semiconductor (now Maxim) DS1307 and DS1338/9 and
63 compatible Real Time Clock devices.
66 bool "Enable DS3232 driver"
70 Support for Dallas Semiconductor (now Maxim) DS3232 compatible
71 Real Time Clock devices.
74 bool "Enable emulated RTC"
77 On a board without hardware clock this software real time clock can be
78 used. The initial time may be provided via the environment variable
79 'rtc_emul_epoch' as a decimal string indicating seconds since
80 1970-01-01. If the environment variable is missing, the build time is
81 used to initialize the RTC. The time can be adjusted manually via the
82 'date' command or the 'sntp' command can be used to update the RTC
83 with the time from a network time server. See CONFIG_CMD_SNTP and
84 CONFIG_BOOTP_NTPSERVER. The RTC time is advanced according to CPU
88 bool "Enable ISL1208 driver"
91 The Renesas (formerly Intersil) ISL1208 is a I2C Real Time Clock (RTC) and
92 calendar with automatic leap year correction, 2-byte battery backed SRAM,
93 automatic power switch-over, alarm function and 15 selectable frequency
96 This driver supports reading and writing the RTC/calendar and detects
100 tristate "Philips PCF8563"
102 If you say yes here you get support for the Philips PCF8563 RTC
103 and compatible chips.
106 bool "Enable RV3028 driver"
109 The MicroCrystal RV3028 is a I2C Real Time Clock (RTC)
112 bool "Enable RV3029 driver"
115 The MicroCrystal RV3029 is a I2C Real Time Clock (RTC) with 8-byte
118 This driver supports reading and writing the RTC/calendar and the
119 battery-baced SRAM section.
122 bool "Enable RV8803 driver"
125 The Micro Crystal RV8803 is a high accuracy, ultra-low power I2C
126 Real Time Clock (RTC) with temperature compensation.
128 This driver supports reading and writing the RTC/calendar and
129 detects total power failures.
132 bool "Enable RX8010SJ driver"
135 Support for Epson RX8010SJ Real Time Clock devices.
138 bool "Enable RX8025 driver"
140 Support for Epson RX8025 Real Time Clock devices.
143 bool "Enable ARM AMBA PL031 RTC driver"
145 The ARM PrimeCell Real Time Clock (PL031) is an optional SoC
146 peripheral based on the Advanced Microcontroller Bus Architecture
147 (AMBA). It is emulated in QEMU virtual ARM machines.
150 bool "Enable Marvell RTC driver"
153 Enable Marvell RTC driver. This driver supports the rtc that is present
154 on some Marvell SoCs.
157 bool "Enable S35392A driver"
160 Enable s35392a driver which provides rtc get and set function.
163 bool "Enable MC146818 driver"
165 This is a widely used real-time clock chip originally by Motorola
166 and now available from NXP. It includes a battery-backed real-time
167 clock with a wide array of features and 50 bytes of general-purpose,
168 battery-backed RAM. The driver supports access to the clock and RAM.
171 bool "Enable M41T62 driver"
173 Enable driver for ST's M41T62 compatible RTC devices (like RV-4162).
174 It is a serial (I2C) real-time clock (RTC) with alarm.
177 bool "Enable STM32 RTC driver"
180 Enable STM32 RTC driver. This driver supports the rtc that is present
184 bool "Enable Abracon ABx80x RTC driver"
187 If you say yes here you get support for Abracon AB080X and AB180X
188 families of ultra-low-power battery- and capacitor-backed real-time
192 bool "Enable TI OMAP RTC driver"
193 depends on ARCH_DAVINCI || ARCH_OMAP2PLUS
195 Say "yes" here to support the on chip real time clock
196 present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
199 bool "Enable ZynqMP RTC driver"
200 depends on ARCH_ZYNQMP
202 Say "yes" here to support the on chip real time clock
203 present on Xilinx ZynqMP SoC.