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 VPL_TIMER
31	bool "Enable driver model for timer drivers in VPL"
32	depends on TIMER && VPL
33	default y if TPL_TIMER
34	help
35	  Enable support for timer drivers in VPL. These can be used to get
36	  a timer value when in VPL, or perhaps for implementing a delay
37	  function. This enables the drivers in drivers/timer as part of an
38	  TPL build.
39
40config TIMER_EARLY
41	bool "Allow timer to be used early in U-Boot"
42	depends on TIMER
43	# initr_bootstage() requires a timer and is called before initr_dm()
44	# so only the early timer is available
45	default y if X86 && BOOTSTAGE
46	help
47	  In some cases the timer must be accessible before driver model is
48	  active. Examples include when using CONFIG_TRACE to trace U-Boot's
49	  execution before driver model is set up. Enable this option to
50	  use an early timer. These functions must be supported by your timer
51	  driver: timer_early_get_count() and timer_early_get_rate().
52
53config ADI_SC5XX_TIMER
54	bool "ADI ADSP-SC5xx Timer Support"
55	depends on TIMER && (SC57X || SC58X || SC59X || SC59X_64)
56	help
57	  gptimer based timer support on ADI's ADSP-SC5xx platforms. Available
58	  but not required on sc59x-64-based platforms (598 and similar).
59	  Required on 32-bit platforms (sc57x, sc58x, sc594 and earlier).
60
61config ALTERA_TIMER
62	bool "Altera timer support"
63	depends on TIMER
64	help
65	  Select this to enable a timer for Altera devices. Please find
66	  details on the "Embedded Peripherals IP User Guide" of Altera.
67
68config ANDES_PLMT_TIMER
69	bool
70	depends on RISCV_MMODE
71	help
72	  The Andes PLMT block holds memory-mapped mtime register
73	  associated with timer tick.
74
75config SPL_ANDES_PLMT_TIMER
76	bool
77	depends on SPL_RISCV_MMODE
78	help
79	  The Andes PLMT block holds memory-mapped mtime register
80	  associated with timer tick.
81
82config ARC_TIMER
83	bool "ARC timer support"
84	depends on TIMER && ARC && CLK
85	help
86	  Select this to enable built-in ARC timers.
87	  ARC cores may have up to 2 built-in timers: timer0 and timer1,
88	  usually at least one of them exists. Either of them is supported
89	  in U-Boot.
90
91config ARM_TWD_TIMER
92	bool "ARM timer watchdog (TWD) timer support"
93	depends on TIMER && CLK
94	help
95	  Select this to enable support for the ARM global timer watchdog timer.
96
97config AST_TIMER
98	bool "Aspeed ast2400/ast2500 timer support"
99	depends on TIMER
100	default y if ARCH_ASPEED
101	help
102	  Select this to enable timer for Aspeed ast2400/ast2500 devices.
103	  This is a simple sys timer driver, it is compatible with lib/time.c,
104	  but does not support any interrupts. Even though SoC has 8 hardware
105	  counters, they are all treated as a single device by this driver.
106	  This is mostly because they all share several registers which
107	  makes it difficult to completely separate them.
108
109config AST_IBEX_TIMER
110	bool "Aspeed ast2700 Ibex timer"
111	depends on TIMER
112	help
113	  Select this to enable a timer support for the Ibex RV32-based MCUs in AST2700.
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 embedded
120	  in AE3XX, AE250 boards.
121
122config ATMEL_PIT_TIMER
123	bool "Atmel periodic interval timer support"
124	depends on TIMER
125	help
126	  Select this to enable a periodic interval timer for Atmel devices,
127	  it is designed to offer maximum accuracy and efficient management,
128	  even for systems with long response time.
129
130config SPL_ATMEL_PIT_TIMER
131	bool "Atmel periodic interval timer support in SPL"
132	depends on SPL_TIMER
133	help
134	  Select this to enable a periodic interval timer for Atmel devices,
135	  it is designed to offer maximum accuracy and efficient management,
136	  even for systems with long response time.
137	  Select this to be available in SPL.
138
139config ATMEL_TCB_TIMER
140	bool "Atmel timer counter support"
141	depends on TIMER
142	depends on ARCH_AT91
143	help
144	  Select this to enable the use of the timer counter as a monotonic
145	  counter.
146
147config SPL_ATMEL_TCB_TIMER
148	bool "Atmel timer counter support in SPL"
149	depends on SPL_TIMER
150	depends on ARCH_AT91
151	help
152	  Select this to enable the use of the timer counter as a monotonic
153	  counter in SPL.
154
155config CADENCE_TTC_TIMER
156	bool "Cadence TTC (Triple Timer Counter)"
157	depends on TIMER
158	help
159	  Enables support for the cadence ttc driver. This driver is present
160	  on Xilinx Zynq and ZynqMP SoCs.
161
162config DESIGNWARE_APB_TIMER
163	bool "Designware APB Timer"
164	depends on TIMER
165	help
166	  Enables support for the Designware APB Timer driver. This timer is
167	  present on Altera SoCFPGA SoCs.
168
169config FTTMR010_TIMER
170	bool "Faraday Technology timer support"
171	depends on TIMER
172	help
173	  Select this to enable support for the timer found on
174	  devices using Faraday Technology's IP.
175
176config GXP_TIMER
177	bool "HPE GXP Timer"
178	depends on TIMER
179	help
180	  Enables support for the GXP Timer driver. This timer is
181	  present on HPE GXP SoCs.
182
183config MPC83XX_TIMER
184	bool "MPC83xx timer support"
185	depends on TIMER
186	help
187	  Select this to enable support for the timer found on
188	  devices based on the MPC83xx family of SoCs.
189
190config RENESAS_OSTM_TIMER
191	bool "Renesas RZ/A1 R7S72100 OSTM Timer"
192	depends on TIMER
193	help
194	  Enables support for the Renesas OSTM Timer driver.
195	  This timer is present on Renesas RZ/A1 R7S72100 SoCs.
196
197config X86_TSC_TIMER_FREQ
198	int "x86 TSC timer frequency in Hz"
199	depends on X86_TSC_TIMER
200	default 1000000000
201	help
202	  Sets the estimated CPU frequency in Hz when TSC is used as the
203	  early timer and the frequency can neither be calibrated via some
204	  hardware ways, nor got from device tree at the time when device
205	  tree is not available yet.
206
207config NOMADIK_MTU_TIMER
208	bool "Nomadik MTU Timer"
209	depends on TIMER
210	help
211	  Enables support for the Nomadik Multi Timer Unit (MTU),
212	  used in ST-Ericsson Ux500 SoCs.
213	  The MTU provides 4 decrementing free-running timers.
214	  At the moment, only the first timer is used by the driver.
215
216config NPCM_TIMER
217	bool "Nuvoton NPCM timer support"
218	depends on TIMER
219	help
220	  Select this to enable a timer on Nuvoton NPCM SoCs.
221	  NPCM timer module has 5 down-counting timers, only the first timer
222	  is used to implement timer ops. No support for early timer and
223	  boot timer.
224
225config OMAP_TIMER
226	bool "Omap timer support"
227	depends on TIMER
228	help
229	  Select this to enable an timer for Omap devices.
230
231config ORION_TIMER
232	bool "Orion timer support"
233	depends on TIMER
234	default y if ARCH_KIRKWOOD || (ARCH_MVEBU && ARMADA_32BIT)
235	select TIMER_EARLY if ARCH_MVEBU
236	help
237	  Select this to enable an timer for Orion and Armada devices
238	  like Armada XP etc.
239
240config RISCV_TIMER
241	bool "RISC-V timer support"
242	depends on TIMER && RISCV
243	help
244	  Select this to enable support for a generic RISC-V S-Mode timer
245	  driver.
246
247config ROCKCHIP_TIMER
248	bool "Rockchip timer support"
249	depends on TIMER
250	help
251	  Select this to enable support for the timer found on
252	  Rockchip devices.
253
254config SANDBOX_TIMER
255	bool "Sandbox timer support"
256	depends on SANDBOX && TIMER
257	help
258	  Select this to enable an emulated timer for sandbox. It gets
259	  time from host os.
260
261config ARM_GLOBAL_TIMER
262	bool "ARM Cortex A9 global timer support"
263	depends on TIMER
264	depends on ARM
265	default y if ARCH_STI
266	help
267	  Select this to enable global timer found on ARM Cortex A9
268	  based devices.
269
270config SP804_TIMER
271	bool "ARM SP804 timer support"
272	depends on TIMER
273	help
274	  ARM SP804 dual timer IP support
275
276config STM32_TIMER
277	bool "STM32 timer support"
278	depends on TIMER
279	help
280	  Select this to enable support for the timer found on
281	  STM32 devices.
282
283config TEGRA_TIMER
284	bool "Tegra timer support"
285	depends on TIMER
286	select TIMER_EARLY
287	help
288	  Select this to enable support for the timer found on
289	  Tegra devices.
290
291config X86_TSC_TIMER
292	bool "x86 Time-Stamp Counter (TSC) timer support"
293	depends on TIMER && X86
294	help
295	  Select this to enable Time-Stamp Counter (TSC) timer for x86.
296
297config X86_TSC_READ_BASE
298	bool "Read the TSC timer base on start-up"
299	depends on X86_TSC_TIMER
300	help
301	  On x86 platforms the TSC timer tick starts at the value 0 on reset.
302	  This it makes no sense to read the timer on boot and use that as the
303	  base, since we will miss some time taken to load U-Boot, etc. This
304	  delay is controlled by the SoC and we cannot reduce it, but for
305	  bootstage we want to record the time since reset as accurately as
306	  possible.
307
308	  The only exception is when U-Boot is used as a secondary bootloader,
309	  where this option should be enabled.
310
311config TPL_X86_TSC_TIMER_NATIVE
312	bool "x86 TSC timer uses native calibration"
313	depends on TPL && X86_TSC_TIMER
314	help
315	  Selects native timer calibration for TPL and don't include the other
316	  methods in the code. This helps to reduce code size in TPL and works
317	  on fairly modern Intel chips. Code-size reductions is about 700
318	  bytes.
319
320config MTK_TIMER
321	bool "MediaTek timer support"
322	depends on TIMER
323	help
324	  Select this to enable support for the timer found on
325	  MediaTek devices.
326
327config MCHP_PIT64B_TIMER
328	bool "Microchip 64-bit periodic interval timer support"
329	depends on TIMER
330	help
331	  Select this to enable support for Microchip 64-bit periodic
332	  interval timer.
333
334config IMX_GPT_TIMER
335	bool "NXP i.MX GPT timer support"
336	depends on TIMER
337	help
338	  Select this to enable support for the timer found on
339	  NXP i.MX devices.
340
341config XILINX_TIMER
342	bool "Xilinx timer support"
343	depends on TIMER
344	select REGMAP
345	select SPL_REGMAP if SPL
346	help
347	  Select this to enable support for the timer found on
348	  any Xilinx boards (axi timer).
349
350config STARFIVE_TIMER
351	bool "Starfive timer support"
352	depends on TIMER
353	help
354	  Select this to enable support for the timer found on
355	  Starfive SoC.
356
357endmenu
358