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Thomas Chouc8a7ba92015-10-09 13:46:34 +08001menu "Timer Support"
2
3config TIMER
Bin Meng435ae762015-11-13 00:11:14 -08004 bool "Enable driver model for timer drivers"
Thomas Chouc8a7ba92015-10-09 13:46:34 +08005 depends on DM
6 help
Bin Meng435ae762015-11-13 00:11:14 -08007 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
Thomas Chouc8a7ba92015-10-09 13:46:34 +08009 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
Philipp Tomsiche9e5d9d2017-07-28 17:38:42 +020012config 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
Simon Glassc95fec32016-02-24 09:14:49 -070030config TIMER_EARLY
31 bool "Allow timer to be used early in U-Boot"
32 depends on TIMER
Simon Glass97d20f62018-09-02 17:02:24 -060033 # initr_bootstage() requires a timer and is called before initr_dm()
34 # so only the early timer is available
35 default y if X86 && BOOTSTAGE
Simon Glassc95fec32016-02-24 09:14:49 -070036 help
37 In some cases the timer must be accessible before driver model is
38 active. Examples include when using CONFIG_TRACE to trace U-Boot's
39 execution before driver model is set up. Enable this option to
40 use an early timer. These functions must be supported by your timer
41 driver: timer_early_get_count() and timer_early_get_rate().
42
Bin Meng73fe4112018-10-10 22:07:02 -070043config AG101P_TIMER
44 bool "AG101P timer support"
45 depends on TIMER && NDS32
46 help
47 Select this to enable a timer for AG01P devices.
48
Thomas Choua54915d2015-10-22 22:28:53 +080049config ALTERA_TIMER
Bin Meng435ae762015-11-13 00:11:14 -080050 bool "Altera timer support"
Thomas Choua54915d2015-10-22 22:28:53 +080051 depends on TIMER
52 help
Bin Meng435ae762015-11-13 00:11:14 -080053 Select this to enable a timer for Altera devices. Please find
Thomas Choua54915d2015-10-22 22:28:53 +080054 details on the "Embedded Peripherals IP User Guide" of Altera.
55
Bin Meng73fe4112018-10-10 22:07:02 -070056config ARC_TIMER
57 bool "ARC timer support"
58 depends on TIMER && ARC && CLK
59 help
60 Select this to enable built-in ARC timers.
61 ARC cores may have up to 2 built-in timers: timer0 and timer1,
62 usually at least one of them exists. Either of them is supported
63 in U-Boot.
64
65config AST_TIMER
66 bool "Aspeed ast2400/ast2500 timer support"
67 depends on TIMER
68 default y if ARCH_ASPEED
69 help
70 Select this to enable timer for Aspeed ast2400/ast2500 devices.
71 This is a simple sys timer driver, it is compatible with lib/time.c,
72 but does not support any interrupts. Even though SoC has 8 hardware
73 counters, they are all treated as a single device by this driver.
74 This is mostly because they all share several registers which
75 makes it difficult to completely separate them.
76
77config ATCPIT100_TIMER
78 bool "ATCPIT100 timer support"
79 depends on TIMER
80 help
81 Select this to enable a ATCPIT100 timer which will be embedded
82 in AE3XX, AE250 boards.
83
Wenyou.Yang@microchip.com47edaea2017-08-15 17:40:26 +080084config ATMEL_PIT_TIMER
85 bool "Atmel periodic interval timer support"
86 depends on TIMER
87 help
88 Select this to enable a periodic interval timer for Atmel devices,
89 it is designed to offer maximum accuracy and efficient management,
90 even for systems with long response time.
91
Michal Simek72c37d12018-04-17 13:40:46 +020092config CADENCE_TTC_TIMER
93 bool "Cadence TTC (Triple Timer Counter)"
94 depends on TIMER
95 help
96 Enables support for the cadence ttc driver. This driver is present
97 on Xilinx Zynq and ZynqMP SoCs.
98
Marek Vasut66011a02018-08-18 15:58:32 +020099config DESIGNWARE_APB_TIMER
100 bool "Designware APB Timer"
101 depends on TIMER
102 help
103 Enables support for the Designware APB Timer driver. This timer is
104 present on Altera SoCFPGA SoCs.
105
Bin Meng73fe4112018-10-10 22:07:02 -0700106config MPC83XX_TIMER
107 bool "MPC83xx timer support"
108 depends on TIMER
Thomas Chou9961a0b2015-10-30 15:35:52 +0800109 help
Bin Meng73fe4112018-10-10 22:07:02 -0700110 Select this to enable support for the timer found on
111 devices based on the MPC83xx family of SoCs.
Bin Meng7030f272015-11-13 00:11:24 -0800112
Bin Meng6ce38362018-10-13 20:52:10 -0700113config X86_TSC_TIMER_EARLY_FREQ
114 int "x86 TSC timer frequency in MHz when used as the early timer"
115 depends on X86_TSC_TIMER
116 default 1000
117 help
118 Sets the estimated CPU frequency in MHz when TSC is used as the
119 early timer and the frequency can neither be calibrated via some
120 hardware ways, nor got from device tree at the time when device
121 tree is not available yet.
122
Mugunthan V Ndadf3132015-12-24 16:08:07 +0530123config OMAP_TIMER
124 bool "Omap timer support"
125 depends on TIMER
126 help
127 Select this to enable an timer for Omap devices.
128
Bin Meng73fe4112018-10-10 22:07:02 -0700129config ROCKCHIP_TIMER
130 bool "Rockchip timer support"
maxims@google.com4697abe2017-01-18 13:44:55 -0800131 depends on TIMER
maxims@google.com4697abe2017-01-18 13:44:55 -0800132 help
Bin Meng73fe4112018-10-10 22:07:02 -0700133 Select this to enable support for the timer found on
134 Rockchip devices.
135
136config SANDBOX_TIMER
137 bool "Sandbox timer support"
138 depends on SANDBOX && TIMER
139 help
140 Select this to enable an emulated timer for sandbox. It gets
141 time from host os.
maxims@google.com4697abe2017-01-18 13:44:55 -0800142
Patrice Chotard347cb2e2017-02-21 13:37:05 +0100143config STI_TIMER
144 bool "STi timer support"
145 depends on TIMER
146 default y if ARCH_STI
147 help
148 Select this to enable a timer for STi devices.
149
Patrice Chotard5120a082018-02-07 10:44:45 +0100150config STM32_TIMER
Bin Meng73fe4112018-10-10 22:07:02 -0700151 bool "STM32 timer support"
Patrice Chotard5120a082018-02-07 10:44:45 +0100152 depends on TIMER
153 help
154 Select this to enable support for the timer found on
155 STM32 devices.
156
Bin Meng73fe4112018-10-10 22:07:02 -0700157config X86_TSC_TIMER
158 bool "x86 Time-Stamp Counter (TSC) timer support"
159 depends on TIMER && X86
Mario Six2c217492018-08-06 10:23:38 +0200160 help
Bin Meng73fe4112018-10-10 22:07:02 -0700161 Select this to enable Time-Stamp Counter (TSC) timer for x86.
Mario Six2c217492018-08-06 10:23:38 +0200162
Thomas Chouc8a7ba92015-10-09 13:46:34 +0800163endmenu