xref: /openbmc/u-boot/drivers/rtc/Kconfig (revision cf7c6f533331ff032d8949663ab2abe618da9cb4)
1 #
2 # RTC drivers configuration
3 #
4 
5 menu "Real Time Clock"
6 
7 config DM_RTC
8 	bool "Enable Driver Model for RTC drivers"
9 	depends on DM
10 	help
11 	  Enable drver model for real-time-clock drivers. The RTC uclass
12 	  then provides the rtc_get()/rtc_set() interface, delegating to
13 	  drivers to perform the actual functions. See rtc.h for a
14 	  description of the API.
15 
16 config SPL_DM_RTC
17 	bool "Enable Driver Model for RTC drivers in SPL"
18 	depends on SPL_DM
19 	help
20 	  Enable drver model for real-time-clock drivers. The RTC uclass
21 	  then provides the rtc_get()/rtc_set() interface, delegating to
22 	  drivers to perform the actual functions. See rtc.h for a
23 	  description of the API.
24 
25 config TPL_DM_RTC
26 	bool "Enable Driver Model for RTC drivers in TPL"
27 	depends on TPL_DM
28 	help
29 	  Enable drver model for real-time-clock drivers. The RTC uclass
30 	  then provides the rtc_get()/rtc_set() interface, delegating to
31 	  drivers to perform the actual functions. See rtc.h for a
32 	  description of the API.
33 
34 config RTC_PCF2127
35 	bool "Enable PCF2127 driver"
36 	depends on DM_RTC
37 	help
38 	  The PCF2127 is a CMOS Real Time Clock (RTC) and calendar with an integrated
39 	  Temperature Compensated Crystal (Xtal) Oscillator (TCXO) and a 32.768 kHz quartz
40 	  crystal optimized for very high accuracy and very low power consumption. The PCF2127
41 	  has a selectable I2C-bus or SPI-bus, a backup battery switch-over circuit, a
42 	  programmable watchdog function, a timestamp function, and many other features.
43 
44 config RTC_DS1307
45 	bool "Enable DS1307 driver"
46 	depends on DM_RTC
47 	help
48 	  Support for Dallas Semiconductor (now Maxim) DS1307 and DS1338/9 and
49 	  compatible Real Time Clock devices.
50 
51 config RTC_ISL1208
52 	bool "Enable ISL1208 driver"
53 	depends on DM_RTC
54 	help
55 	  The Renesas (formerly Intersil) ISL1208 is a I2C Real Time Clock (RTC) and
56 	  calendar with automatic leap year correction, 2-byte battery backed SRAM,
57 	  automatic power switch-over, alarm function and 15 selectable frequency
58 	  outputs.
59 
60 	  This driver supports reading and writing the RTC/calendar and detects
61 	  total power failures.
62 
63 config RTC_RV3029
64 	bool "Enable RV3029 driver"
65 	depends on DM_RTC
66 	help
67 	  The MicroCrystal RV3029 is a I2C Real Time Clock (RTC) with 8-byte
68 	  battery-backed SRAM.
69 
70 	  This driver supports reading and writing the RTC/calendar and the
71 	  battery-baced SRAM section.
72 
73 config RTC_RX8010SJ
74 	bool "Enable RX8010SJ driver"
75 	depends on DM_RTC
76 	help
77 	  Support for Epson RX8010SJ Real Time Clock devices.
78 
79 config RTC_PL031
80 	bool "Enable ARM AMBA PL031 RTC driver"
81 	help
82 	  The ARM PrimeCell Real Time Clock (PL031) is an optional SoC
83 	  peripheral based on the Advanced Microcontroller Bus Architecture
84 	  (AMBA). It is emulated in QEMU virtual ARM machines.
85 
86 config RTC_MV
87 	bool "Enable Marvell RTC driver"
88 	depends on DM_RTC
89 	help
90 	  Enable Marvell RTC driver. This driver supports the rtc that is present
91 	  on some Marvell SoCs.
92 
93 config RTC_S35392A
94 	bool "Enable S35392A driver"
95 	select BITREVERSE
96 	help
97 	  Enable s35392a driver which provides rtc get and set function.
98 
99 config RTC_MC146818
100 	bool "Enable MC146818 driver"
101 	help
102 	  This is a widely used real-time clock chip originally by Motorola
103 	  and now available from NXP. It includes a battery-backed real-time
104 	  clock with a wide array of features and 50 bytes of general-purpose,
105 	  battery-backed RAM. The driver supports access to the clock and RAM.
106 
107 config RTC_M41T62
108 	bool "Enable M41T62 driver"
109 	help
110 	  Enable driver for ST's M41T62 compatible RTC devices (like RV-4162).
111 	  It is a serial (I2C) real-time clock (RTC) with alarm.
112 
113 endmenu
114