xref: /openbmc/u-boot/drivers/timer/Kconfig (revision c66f5620)
1menu "Timer Support"
2
3config TIMER
4	bool "Enable driver model for timer drivers"
5	depends on DM
6	help
7	  Enable driver model for timer access. It uses the same API as
8	  lib/time.c, but now implemented by the uclass. The first timer
9	  will be used. The timer is usually a 32 bits free-running up
10	  counter. There may be no real tick, and no timer interrupt.
11
12config SPL_TIMER
13	bool "Enable driver model for timer drivers in SPL"
14	depends on TIMER && SPL
15	help
16	  Enable support for timer drivers in SPL. These can be used to get
17	  a timer value when in SPL, or perhaps for implementing a delay
18	  function. This enables the drivers in drivers/timer as part of an
19	  SPL build.
20
21config TPL_TIMER
22	bool "Enable driver model for timer drivers in TPL"
23	depends on TIMER && TPL
24	help
25	  Enable support for timer drivers in TPL. These can be used to get
26	  a timer value when in TPL, or perhaps for implementing a delay
27	  function. This enables the drivers in drivers/timer as part of an
28	  TPL build.
29
30config TIMER_EARLY
31	bool "Allow timer to be used early in U-Boot"
32	depends on TIMER
33	help
34	  In some cases the timer must be accessible before driver model is
35	  active. Examples include when using CONFIG_TRACE to trace U-Boot's
36	  execution before driver model is set up. Enable this option to
37	  use an early timer. These functions must be supported by your timer
38	  driver: timer_early_get_count() and timer_early_get_rate().
39
40config ALTERA_TIMER
41	bool "Altera timer support"
42	depends on TIMER
43	help
44	  Select this to enable a timer for Altera devices. Please find
45	  details on the "Embedded Peripherals IP User Guide" of Altera.
46
47config ATMEL_PIT_TIMER
48	bool "Atmel periodic interval timer support"
49	depends on TIMER
50	help
51	  Select this to enable a periodic interval timer for Atmel devices,
52	  it is designed to offer maximum accuracy and efficient management,
53	  even for systems with long response time.
54
55config CADENCE_TTC_TIMER
56	bool "Cadence TTC (Triple Timer Counter)"
57	depends on TIMER
58	help
59	  Enables support for the cadence ttc driver. This driver is present
60	  on Xilinx Zynq and ZynqMP SoCs.
61
62config SANDBOX_TIMER
63	bool "Sandbox timer support"
64	depends on SANDBOX && TIMER
65	help
66	  Select this to enable an emulated timer for sandbox. It gets
67	  time from host os.
68
69config X86_TSC_TIMER
70	bool "x86 Time-Stamp Counter (TSC) timer support"
71	depends on TIMER && X86
72	help
73	  Select this to enable Time-Stamp Counter (TSC) timer for x86.
74
75config OMAP_TIMER
76	bool "Omap timer support"
77	depends on TIMER
78	help
79	  Select this to enable an timer for Omap devices.
80
81config AST_TIMER
82	bool "Aspeed ast2400/ast2500 timer support"
83	depends on TIMER
84	default y if ARCH_ASPEED
85	help
86	  Select this to enable timer for Aspeed ast2400/ast2500 devices.
87	  This is a simple sys timer driver, it is compatible with lib/time.c,
88	  but does not support any interrupts. Even though SoC has 8 hardware
89	  counters, they are all treated as a single device by this driver.
90	  This is mostly because they all share several registers which
91	  makes it difficult to completely separate them.
92
93config STI_TIMER
94	bool "STi timer support"
95	depends on TIMER
96	default y if ARCH_STI
97	help
98	  Select this to enable a timer for STi devices.
99
100config ARC_TIMER
101	bool "ARC timer support"
102	depends on TIMER && ARC && CLK
103	help
104	  Select this to enable built-in ARC timers.
105	  ARC cores may have up to 2 built-in timers: timer0 and timer1,
106	  usually at least one of them exists. Either of them is supported
107	  in U-Boot.
108
109config AG101P_TIMER
110	bool "AG101P timer support"
111	depends on TIMER && NDS32
112	help
113	  Select this to enable a timer for AG01P devices.
114
115config ATCPIT100_TIMER
116	bool "ATCPIT100 timer support"
117	depends on TIMER
118	help
119	  Select this to enable a ATCPIT100 timer which will be embeded
120		in AE3XX, AE250 boards.
121
122config ROCKCHIP_TIMER
123        bool "Rockchip timer support"
124	depends on TIMER
125	help
126	  Select this to enable support for the timer found on
127	  Rockchip devices.
128
129config STM32_TIMER
130        bool "STM32 timer support"
131	depends on TIMER
132	help
133	  Select this to enable support for the timer found on
134	  STM32 devices.
135
136endmenu
137