1#
2# RTC drivers configuration
3#
4
5menu "Real Time Clock"
6
7config DM_RTC
8	bool "Enable Driver Model for RTC drivers"
9	depends on DM
10	select LIB_DATE
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.
16
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
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
41config RTC_PCF2127
42	bool "Enable PCF2127 driver"
43	depends on DM_RTC
44	help
45	  The PCF2127 is a CMOS Real Time Clock (RTC) and calendar with an integrated
46	  Temperature Compensated Crystal (Xtal) Oscillator (TCXO) and a 32.768 kHz quartz
47	  crystal optimized for very high accuracy and very low power consumption. The PCF2127
48	  has a selectable I2C-bus or SPI-bus, a backup battery switch-over circuit, a
49	  programmable watchdog function, a timestamp function, and many other features.
50
51config RTC_DS1307
52	bool "Enable DS1307 driver"
53	depends on DM_RTC
54	help
55	  Support for Dallas Semiconductor (now Maxim) DS1307 and DS1338/9 and
56	  compatible Real Time Clock devices.
57
58config RTC_DS3232
59	bool "Enable DS3232 driver"
60	depends on DM_RTC
61	depends on DM_I2C
62	help
63	  Support for Dallas Semiconductor (now Maxim) DS3232 compatible
64	  Real Time Clock devices.
65
66config RTC_EMULATION
67	bool "Enable emulated RTC"
68	depends on DM_RTC
69	help
70	  On a board without hardware clock this software real time clock can be
71	  used. The initial time may be provided via the environment variable
72	  'rtc_emul_epoch' as a decimal string indicating seconds since
73	  1970-01-01. If the environment variable is missing, the build time is
74	  used to initialize the RTC. The time can be adjusted manually via the
75	  'date' command or the 'sntp' command can be used to update the RTC
76	  with the time from a network time server. See CONFIG_CMD_SNTP and
77	  CONFIG_BOOTP_NTPSERVER. The RTC time is advanced according to CPU
78	  ticks.
79
80config RTC_ISL1208
81	bool "Enable ISL1208 driver"
82	depends on DM_RTC
83	help
84	  The Renesas (formerly Intersil) ISL1208 is a I2C Real Time Clock (RTC) and
85	  calendar with automatic leap year correction, 2-byte battery backed SRAM,
86	  automatic power switch-over, alarm function and 15 selectable frequency
87	  outputs.
88
89	  This driver supports reading and writing the RTC/calendar and detects
90	  total power failures.
91
92config RTC_PCF8563
93	tristate "Philips PCF8563"
94	help
95	  If you say yes here you get support for the Philips PCF8563 RTC
96	  and compatible chips.
97
98config RTC_RV3029
99	bool "Enable RV3029 driver"
100	depends on DM_RTC
101	help
102	  The MicroCrystal RV3029 is a I2C Real Time Clock (RTC) with 8-byte
103	  battery-backed SRAM.
104
105	  This driver supports reading and writing the RTC/calendar and the
106	  battery-baced SRAM section.
107
108config RTC_RV8803
109	bool "Enable RV8803 driver"
110	depends on DM_RTC
111	help
112	  The Micro Crystal RV8803 is a high accuracy, ultra-low power I2C
113	  Real Time Clock (RTC) with temperature compensation.
114
115	  This driver supports reading and writing the RTC/calendar and
116	  detects total power failures.
117
118config RTC_RX8010SJ
119	bool "Enable RX8010SJ driver"
120	depends on DM_RTC
121	help
122	  Support for Epson RX8010SJ Real Time Clock devices.
123
124config RTC_RX8025
125	bool "Enable RX8025 driver"
126	help
127	  Support for Epson RX8025 Real Time Clock devices.
128
129config RTC_PL031
130	bool "Enable ARM AMBA PL031 RTC driver"
131	help
132	  The ARM PrimeCell Real Time Clock (PL031) is an optional SoC
133	  peripheral based on the Advanced Microcontroller Bus Architecture
134	  (AMBA). It is emulated in QEMU virtual ARM machines.
135
136config RTC_MV
137	bool "Enable Marvell RTC driver"
138	depends on DM_RTC
139	help
140	  Enable Marvell RTC driver. This driver supports the rtc that is present
141	  on some Marvell SoCs.
142
143config RTC_S35392A
144	bool "Enable S35392A driver"
145	select BITREVERSE
146	help
147	  Enable s35392a driver which provides rtc get and set function.
148
149config RTC_MC146818
150	bool "Enable MC146818 driver"
151	help
152	  This is a widely used real-time clock chip originally by Motorola
153	  and now available from NXP. It includes a battery-backed real-time
154	  clock with a wide array of features and 50 bytes of general-purpose,
155	  battery-backed RAM. The driver supports access to the clock and RAM.
156
157config RTC_M41T62
158	bool "Enable M41T62 driver"
159	help
160	  Enable driver for ST's M41T62 compatible RTC devices (like RV-4162).
161	  It is a serial (I2C) real-time clock (RTC) with alarm.
162
163config RTC_STM32
164	bool "Enable STM32 RTC driver"
165	depends on DM_RTC
166	help
167	  Enable STM32 RTC driver. This driver supports the rtc that is present
168	  on some STM32 SoCs.
169
170config RTC_ABX80X
171	bool "Enable Abracon ABx80x RTC driver"
172	depends on DM_RTC
173	help
174	  If you say yes here you get support for Abracon AB080X and AB180X
175	  families of ultra-low-power  battery- and capacitor-backed real-time
176	  clock chips.
177
178endmenu
179