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.
36 bool "Enable Driver Model for RTC drivers in VPL"
39 Enable drver model for real-time-clock drivers. The RTC uclass
40 then provides the rtc_get()/rtc_set() interface, delegating to
41 drivers to perform the actual functions. See rtc.h for a
42 description of the API.
44 config RTC_ENABLE_32KHZ_OUTPUT
45 bool "Enable RTC 32Khz output"
47 Some real-time clocks support the output of 32kHz square waves (such as ds3231),
48 the config symbol choose Real Time Clock device 32Khz output feature.
51 bool "Enable Armada 38x Marvell SoC RTC"
52 depends on DM_RTC && ARCH_MVEBU
54 This adds support for the in-chip RTC that can be found in the
55 Armada 38x Marvell's SoC devices.
58 bool "Enable PCF2127 driver"
61 The PCF2127 is a CMOS Real Time Clock (RTC) and calendar with an integrated
62 Temperature Compensated Crystal (Xtal) Oscillator (TCXO) and a 32.768 kHz quartz
63 crystal optimized for very high accuracy and very low power consumption. The PCF2127
64 has a selectable I2C-bus or SPI-bus, a backup battery switch-over circuit, a
65 programmable watchdog function, a timestamp function, and many other features.
68 bool "Enable DS1307 driver"
71 Support for Dallas Semiconductor (now Maxim) DS1307 and DS1339 and
72 compatible Real Time Clock devices.
75 bool "Enable DS1337 driver"
77 Support for Dallas Semiconductor (now Maxim) DS1337/8/9 compatible
78 Real Time Clock devices.
80 config RTC_DS1337_NOOSC
81 bool "Enable support for no oscillator output in DS1337 driver"
85 bool "Enable DS1338 driver"
87 Support for Dallas Semiconductor (now Maxim) DS1338 and compatible
88 Real Time Clock devices.
91 bool "Enable DS1374 driver"
94 Support for Dallas Semiconductor (now Maxim) DS1374 and compatible
95 Real Time Clock devices.
98 bool "Enable DS3231 driver"
100 Support for Dallas Semiconductor (now Maxim) DS3231 compatible
101 Real Time Clock devices.
104 bool "Enable DS3232 driver"
108 Support for Dallas Semiconductor (now Maxim) DS3232 compatible
109 Real Time Clock devices.
112 bool "Enable emulated RTC"
115 On a board without hardware clock this software real time clock can be
116 used. The initial time may be provided via the environment variable
117 'rtc_emul_epoch' as a decimal string indicating seconds since
118 1970-01-01. If the environment variable is missing, the build time is
119 used to initialize the RTC. The time can be adjusted manually via the
120 'date' command or the 'sntp' command can be used to update the RTC
121 with the time from a network time server. See CONFIG_CMD_SNTP and
122 CONFIG_BOOTP_NTPSERVER. The RTC time is advanced according to CPU
126 bool "Enable Goldfish driver"
129 The Goldfish RTC is a virtual device which may be supplied by QEMU.
130 It is enabled by default on QEMU's RISC-V virt machine.
133 bool "Enable ISL1208 driver"
136 The Renesas (formerly Intersil) ISL1208 is a I2C Real Time Clock (RTC) and
137 calendar with automatic leap year correction, 2-byte battery backed SRAM,
138 automatic power switch-over, alarm function and 15 selectable frequency
141 This driver supports reading and writing the RTC/calendar and detects
142 total power failures.
145 bool "Analog Devices MAX313XX RTC driver"
149 If you say yes here you will get support for the
150 Analog Devices MAX313XX series RTC family.
152 Chip features not currently supported:
153 - Timestamp registers as SRAM
158 tristate "Philips PCF8563"
160 If you say yes here you get support for the Philips PCF8563 RTC
161 and compatible chips.
164 bool "Enable Pericom Technology PT7C4338 RTC driver"
167 bool "Enable RV3028 driver"
170 The MicroCrystal RV3028 is a I2C Real Time Clock (RTC)
173 bool "Enable RV3029 driver"
176 The MicroCrystal RV3029 is a I2C Real Time Clock (RTC) with 8-byte
179 This driver supports reading and writing the RTC/calendar and the
180 battery-baced SRAM section.
183 bool "Enable RV8803 driver"
186 The Micro Crystal RV8803 is a high accuracy, ultra-low power I2C
187 Real Time Clock (RTC) with temperature compensation.
189 This driver supports reading and writing the RTC/calendar and
190 detects total power failures.
193 bool "Enable RX8010SJ driver"
196 Support for Epson RX8010SJ Real Time Clock devices.
199 bool "Enable RX8025 driver"
202 Support for Epson RX8025 Real Time Clock devices.
205 bool "Enable ARM AMBA PL031 RTC driver"
208 The ARM PrimeCell Real Time Clock (PL031) is an optional SoC
209 peripheral based on the Advanced Microcontroller Bus Architecture
210 (AMBA). It is emulated in QEMU virtual ARM machines.
213 bool "Enable Marvell RTC driver"
216 Enable Marvell RTC driver. This driver supports the rtc that is present
217 on some Marvell SoCs.
220 bool "Enable S35392A driver"
223 Enable s35392a driver which provides rtc get and set function.
226 bool "Enable MC13XXX RTC driver"
230 bool "Enable MC146818 driver"
232 This is a widely used real-time clock chip originally by Motorola
233 and now available from NXP. It includes a battery-backed real-time
234 clock with a wide array of features and 50 bytes of general-purpose,
235 battery-backed RAM. The driver supports access to the clock and RAM.
238 bool "Use common CF RTC driver"
241 config SYS_MCFRTC_BASE
242 hex "Base address for RTC in immap.h"
246 bool "Enable i.MXS RTC driver"
247 depends on ARCH_MX23 || ARCH_MX28
250 bool "Enable M41T62 driver"
252 Enable driver for ST's M41T62 compatible RTC devices (like RV-4162).
253 It is a serial (I2C) real-time clock (RTC) with alarm.
256 bool "Enable sandbox RTC driver"
257 depends on SANDBOX && DM_RTC
260 Enable the sandbox RTC driver. This driver connects to the RTC
261 emulator and is used to test the RTC uclasses and associated code,
262 as well as the I2C subsystem.
264 config SPL_RTC_SANDBOX
265 bool "Enable sandbox RTC driver (SPL)"
266 depends on SANDBOX && SPL_DM_RTC
269 Enable the sandbox RTC driver. This driver connects to the RTC
270 emulator and is used to test the RTC uclasses and associated code,
271 as well as the I2C subsystem.
274 bool "Enable STM32 RTC driver"
277 Enable STM32 RTC driver. This driver supports the rtc that is present
281 bool "Enable Abracon ABx80x RTC driver"
284 If you say yes here you get support for Abracon AB080X and AB180X
285 families of ultra-low-power battery- and capacitor-backed real-time
289 bool "Enable TI OMAP RTC driver"
290 depends on ARCH_DAVINCI || ARCH_OMAP2PLUS
292 Say "yes" here to support the on chip real time clock
293 present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
296 bool "Enable ZynqMP RTC driver"
297 depends on ARCH_ZYNQMP
299 Say "yes" here to support the on chip real time clock
300 present on Xilinx ZynqMP SoC.
303 bool "Enable Holtek HT1380/HT1381 RTC driver"
304 depends on DM_RTC && DM_GPIO
306 Say "yes" here to get support for Holtek HT1380/HT1381
307 Serial Timekeeper IC which provides seconds, minutes, hours,
308 day of the week, date, month and year information. It is to be
309 connected via 3 GPIO pins which work as reset, clock, and data.