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_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
48config RTC_PCF2127
49	bool "Enable PCF2127 driver"
50	depends on DM_RTC
51	help
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.
57
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
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
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
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.
86
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
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
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
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
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
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
137config RTC_RX8025
138	bool "Enable RX8025 driver"
139	depends on DM_RTC
140	help
141	  Support for Epson RX8025 Real Time Clock devices.
142
143config RTC_PL031
144	bool "Enable ARM AMBA PL031 RTC driver"
145	help
146	  The ARM PrimeCell Real Time Clock (PL031) is an optional SoC
147	  peripheral based on the Advanced Microcontroller Bus Architecture
148	  (AMBA). It is emulated in QEMU virtual ARM machines.
149
150config RTC_MV
151	bool "Enable Marvell RTC driver"
152	depends on DM_RTC
153	help
154	  Enable Marvell RTC driver. This driver supports the rtc that is present
155	  on some Marvell SoCs.
156
157config RTC_S35392A
158	bool "Enable S35392A driver"
159	select BITREVERSE
160	help
161	  Enable s35392a driver which provides rtc get and set function.
162
163config RTC_MC146818
164	bool "Enable MC146818 driver"
165	help
166	  This is a widely used real-time clock chip originally by Motorola
167	  and now available from NXP. It includes a battery-backed real-time
168	  clock with a wide array of features and 50 bytes of general-purpose,
169	  battery-backed RAM. The driver supports access to the clock and RAM.
170
171config RTC_M41T62
172	bool "Enable M41T62 driver"
173	help
174	  Enable driver for ST's M41T62 compatible RTC devices (like RV-4162).
175	  It is a serial (I2C) real-time clock (RTC) with alarm.
176
177config RTC_STM32
178	bool "Enable STM32 RTC driver"
179	depends on DM_RTC
180	help
181	  Enable STM32 RTC driver. This driver supports the rtc that is present
182	  on some STM32 SoCs.
183
184config RTC_ABX80X
185	bool "Enable Abracon ABx80x RTC driver"
186	depends on DM_RTC
187	help
188	  If you say yes here you get support for Abracon AB080X and AB180X
189	  families of ultra-low-power  battery- and capacitor-backed real-time
190	  clock chips.
191
192config RTC_DAVINCI
193	bool "Enable TI OMAP RTC driver"
194	depends on ARCH_DAVINCI || ARCH_OMAP2PLUS
195	help
196	  Say "yes" here to support the on chip real time clock
197	  present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
198
199config RTC_ZYNQMP
200	bool "Enable ZynqMP RTC driver"
201	depends on ARCH_ZYNQMP
202	help
203	  Say "yes" here to support the on chip real time clock
204	  present on Xilinx ZynqMP SoC.
205
206endmenu
207