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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 8246654e1ef3ea9e2907a42e01b7747ccc62d412 / . / drivers / rtc / Kconfig
blob: dafba35279b410fd67472ce7bd191728d98af2e9 [file] [log] [blame]
Masahiro Yamada0b11dbf2015-07-26 02:46:26 +0900[diff] [blame]1#
2# RTC drivers configuration
3#
4
5menu "Real Time Clock"
6
Simon Glassdbeda5b2015-04-20 12:37:23 -0600[diff] [blame]7config DM_RTC
8 bool "Enable Driver Model for RTC drivers"
9 depends on DM
AKASHI Takahiro05429b62019-11-13 09:44:49 +0900[diff] [blame]10 select LIB_DATE
Simon Glassdbeda5b2015-04-20 12:37:23 -0600[diff] [blame]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.
Masahiro Yamada0b11dbf2015-07-26 02:46:26 +0900[diff] [blame]16
Simon Glass380d4f72018-10-01 12:22:15 -0600[diff] [blame]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
Chuanhua Handb07c442019-07-26 19:24:00 +0800[diff] [blame]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
Marek Behúnaefbc2c2021-02-26 10:30:19 +0100[diff] [blame]41config RTC_ARMADA38X
42 bool "Enable Armada 38x Marvell SoC RTC"
43 depends on DM_RTC && ARCH_MVEBU
44 help
45 This adds support for the in-chip RTC that can be found in the
46 Armada 38x Marvell's SoC devices.
47
Meng Yi8f3a8422016-11-30 15:47:31 +0800[diff] [blame]48config RTC_PCF2127
49 bool "Enable PCF2127 driver"
50 depends on DM_RTC
51 help
Meng Yi45a01942017-01-09 11:24:51 -0700[diff] [blame]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.
Meng Yi8f3a8422016-11-30 15:47:31 +0800[diff] [blame]57
Chris Packhamd425d602017-04-29 15:20:29 +1200[diff] [blame]58config RTC_DS1307
59 bool "Enable DS1307 driver"
60 depends on DM_RTC
61 help
62 Support for Dallas Semiconductor (now Maxim) DS1307 and DS1338/9 and
63 compatible Real Time Clock devices.
64
Han Nandor0b326fc2019-11-12 08:39:38 +0000[diff] [blame]65config RTC_DS3232
66 bool "Enable DS3232 driver"
67 depends on DM_RTC
68 depends on DM_I2C
69 help
70 Support for Dallas Semiconductor (now Maxim) DS3232 compatible
71 Real Time Clock devices.
72
Heinrich Schuchardt87e99632020-10-22 23:52:14 +0200[diff] [blame]73config RTC_EMULATION
74 bool "Enable emulated RTC"
75 depends on DM_RTC
76 help
77 On a board without hardware clock this software real time clock can be
Heinrich Schuchardtfb71c3f2020-10-30 03:27:22 +0100[diff] [blame]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
85 ticks.
Heinrich Schuchardt87e99632020-10-22 23:52:14 +0200[diff] [blame]86
Klaus Goger52280312018-03-19 20:32:05 +0100[diff] [blame]87config RTC_ISL1208
88 bool "Enable ISL1208 driver"
89 depends on DM_RTC
90 help
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
94 outputs.
95
96 This driver supports reading and writing the RTC/calendar and detects
97 total power failures.
98
Heiko Schocherdddfde52020-10-16 10:41:46 +0200[diff] [blame]99config RTC_PCF8563
100 tristate "Philips PCF8563"
101 help
102 If you say yes here you get support for the Philips PCF8563 RTC
103 and compatible chips.
104
Philipp Tomsicha3716b52018-11-27 22:53:57 +0100[diff] [blame]105config RTC_RV3029
106 bool "Enable RV3029 driver"
107 depends on DM_RTC
108 help
109 The MicroCrystal RV3029 is a I2C Real Time Clock (RTC) with 8-byte
110 battery-backed SRAM.
111
112 This driver supports reading and writing the RTC/calendar and the
113 battery-baced SRAM section.
114
Michael Wallefb9a1ff2019-05-29 01:29:58 +0200[diff] [blame]115config RTC_RV8803
116 bool "Enable RV8803 driver"
117 depends on DM_RTC
118 help
119 The Micro Crystal RV8803 is a high accuracy, ultra-low power I2C
120 Real Time Clock (RTC) with temperature compensation.
121
122 This driver supports reading and writing the RTC/calendar and
123 detects total power failures.
124
Nandor Han958a2102018-01-10 20:31:27 +0100[diff] [blame]125config RTC_RX8010SJ
126 bool "Enable RX8010SJ driver"
127 depends on DM_RTC
128 help
129 Support for Epson RX8010SJ Real Time Clock devices.
130
Heiko Schochera7e6d0c2019-07-16 05:31:33 +0200[diff] [blame]131config RTC_RX8025
132 bool "Enable RX8025 driver"
133 help
134 Support for Epson RX8025 Real Time Clock devices.
135
Heinrich Schuchardtb19886b2018-06-29 00:34:16 +0200[diff] [blame]136config RTC_PL031
137 bool "Enable ARM AMBA PL031 RTC driver"
138 help
139 The ARM PrimeCell Real Time Clock (PL031) is an optional SoC
140 peripheral based on the Advanced Microcontroller Bus Architecture
141 (AMBA). It is emulated in QEMU virtual ARM machines.
142
Chris Packhamd3671df2018-05-28 23:39:58 +1200[diff] [blame]143config RTC_MV
144 bool "Enable Marvell RTC driver"
145 depends on DM_RTC
146 help
147 Enable Marvell RTC driver. This driver supports the rtc that is present
148 on some Marvell SoCs.
149
Nandor Handa5337a2017-11-08 15:35:14 +0000[diff] [blame]150config RTC_S35392A
151 bool "Enable S35392A driver"
152 select BITREVERSE
153 help
154 Enable s35392a driver which provides rtc get and set function.
155
Simon Glass10761072018-10-01 12:22:14 -0600[diff] [blame]156config RTC_MC146818
157 bool "Enable MC146818 driver"
158 help
159 This is a widely used real-time clock chip originally by Motorola
160 and now available from NXP. It includes a battery-backed real-time
161 clock with a wide array of features and 50 bytes of general-purpose,
162 battery-backed RAM. The driver supports access to the clock and RAM.
163
Lukasz Majewskid27db672018-11-22 14:54:31 +0100[diff] [blame]164config RTC_M41T62
165 bool "Enable M41T62 driver"
166 help
167 Enable driver for ST's M41T62 compatible RTC devices (like RV-4162).
168 It is a serial (I2C) real-time clock (RTC) with alarm.
169
Patrick Delaunay1f99eaf2019-07-22 11:02:34 +0200[diff] [blame]170config RTC_STM32
171 bool "Enable STM32 RTC driver"
172 depends on DM_RTC
173 help
174 Enable STM32 RTC driver. This driver supports the rtc that is present
175 on some STM32 SoCs.
Ying-Chun Liu (PaulLiu)8d612cc2021-01-15 13:53:02 +0800[diff] [blame]176
177config RTC_ABX80X
178 bool "Enable Abracon ABx80x RTC driver"
179 depends on DM_RTC
180 help
181 If you say yes here you get support for Abracon AB080X and AB180X
182 families of ultra-low-power battery- and capacitor-backed real-time
183 clock chips.
184
Masahiro Yamada0b11dbf2015-07-26 02:46:26 +0900[diff] [blame]185endmenu