Gitiles
Code Review Sign In
gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 236f2ec43266cb4dabd320381498df6c9d80c82d / . / drivers / rtc / Kconfig
blob: c84a9d2b27b75c56ce04e57abc3a79b5afa7081a [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
Heiko Schocher05a07762021-03-10 08:15:00 +0100[diff] [blame]105config RTC_RV3028
106 bool "Enable RV3028 driver"
107 depends on DM_RTC
108 help
109 The MicroCrystal RV3028 is a I2C Real Time Clock (RTC)
110
Philipp Tomsicha3716b52018-11-27 22:53:57 +0100[diff] [blame]111config RTC_RV3029
112 bool "Enable RV3029 driver"
113 depends on DM_RTC
114 help
115 The MicroCrystal RV3029 is a I2C Real Time Clock (RTC) with 8-byte
116 battery-backed SRAM.
117
118 This driver supports reading and writing the RTC/calendar and the
119 battery-baced SRAM section.
120
Michael Wallefb9a1ff2019-05-29 01:29:58 +0200[diff] [blame]121config RTC_RV8803
122 bool "Enable RV8803 driver"
123 depends on DM_RTC
124 help
125 The Micro Crystal RV8803 is a high accuracy, ultra-low power I2C
126 Real Time Clock (RTC) with temperature compensation.
127
128 This driver supports reading and writing the RTC/calendar and
129 detects total power failures.
130
Nandor Han958a2102018-01-10 20:31:27 +0100[diff] [blame]131config RTC_RX8010SJ
132 bool "Enable RX8010SJ driver"
133 depends on DM_RTC
134 help
135 Support for Epson RX8010SJ Real Time Clock devices.
136
Heiko Schochera7e6d0c2019-07-16 05:31:33 +0200[diff] [blame]137config RTC_RX8025
138 bool "Enable RX8025 driver"
139 help
140 Support for Epson RX8025 Real Time Clock devices.
141
Heinrich Schuchardtb19886b2018-06-29 00:34:16 +0200[diff] [blame]142config RTC_PL031
143 bool "Enable ARM AMBA PL031 RTC driver"
144 help
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.
148
Chris Packhamd3671df2018-05-28 23:39:58 +1200[diff] [blame]149config RTC_MV
150 bool "Enable Marvell RTC driver"
151 depends on DM_RTC
152 help
153 Enable Marvell RTC driver. This driver supports the rtc that is present
154 on some Marvell SoCs.
155
Nandor Handa5337a2017-11-08 15:35:14 +0000[diff] [blame]156config RTC_S35392A
157 bool "Enable S35392A driver"
158 select BITREVERSE
159 help
160 Enable s35392a driver which provides rtc get and set function.
161
Simon Glass10761072018-10-01 12:22:14 -0600[diff] [blame]162config RTC_MC146818
163 bool "Enable MC146818 driver"
164 help
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.
169
Lukasz Majewskid27db672018-11-22 14:54:31 +0100[diff] [blame]170config RTC_M41T62
171 bool "Enable M41T62 driver"
172 help
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.
175
Patrick Delaunay1f99eaf2019-07-22 11:02:34 +0200[diff] [blame]176config RTC_STM32
177 bool "Enable STM32 RTC driver"
178 depends on DM_RTC
179 help
180 Enable STM32 RTC driver. This driver supports the rtc that is present
181 on some STM32 SoCs.
Ying-Chun Liu (PaulLiu)8d612cc2021-01-15 13:53:02 +0800[diff] [blame]182
183config RTC_ABX80X
184 bool "Enable Abracon ABx80x RTC driver"
185 depends on DM_RTC
186 help
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
189 clock chips.
190
Masahiro Yamada0b11dbf2015-07-26 02:46:26 +0900[diff] [blame]191endmenu