[linux-2.6-block.git] / arch / arm / mach-at91 / Kconfig

if ARCH_AT91

menu "Atmel AT91 System-on-Chip"

choice
	prompt "Atmel AT91 Processor"

config ARCH_AT91RM9200
	bool "AT91RM9200"
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS

config ARCH_AT91SAM9260
	bool "AT91SAM9260 or AT91SAM9XE"
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS

config ARCH_AT91SAM9261
	bool "AT91SAM9261"
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS

config ARCH_AT91SAM9263
	bool "AT91SAM9263"
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS

config ARCH_AT91SAM9RL
	bool "AT91SAM9RL"
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS

config ARCH_AT91CAP9
	bool "AT91CAP9"
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS

config ARCH_AT91X40
	bool "AT91x40"

endchoice

config AT91_PMC_UNIT
	bool
	default !ARCH_AT91X40

# ----------------------------------------------------------

if ARCH_AT91RM9200

comment "AT91RM9200 Board Type"

config MACH_ONEARM
	bool "Ajeco 1ARM Single Board Computer"
	depends on ARCH_AT91RM9200
	help
	  Select this if you are using Ajeco's 1ARM Single Board Computer.
	  <http://www.ajeco.fi/products.htm>

config ARCH_AT91RM9200DK
	bool "Atmel AT91RM9200-DK Development board"
	depends on ARCH_AT91RM9200
	help
	  Select this if you are using Atmel's AT91RM9200-DK Development board.
	  (Discontinued)

config MACH_AT91RM9200EK
	bool "Atmel AT91RM9200-EK Evaluation Kit"
	depends on ARCH_AT91RM9200
	help
	  Select this if you are using Atmel's AT91RM9200-EK Evaluation Kit.
	  <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3507>

config MACH_CSB337
	bool "Cogent CSB337"
	depends on ARCH_AT91RM9200
	help
	  Select this if you are using Cogent's CSB337 board.
	  <http://www.cogcomp.com/csb_csb337.htm>

config MACH_CSB637
	bool "Cogent CSB637"
	depends on ARCH_AT91RM9200
	help
	  Select this if you are using Cogent's CSB637 board.
	  <http://www.cogcomp.com/csb_csb637.htm>

config MACH_CARMEVA
	bool "Conitec ARM&EVA"
	depends on ARCH_AT91RM9200
	help
	  Select this if you are using Conitec's AT91RM9200-MCU-Module.
	  <http://www.conitec.net/english/linuxboard.htm>

config MACH_ATEB9200
	bool "Embest ATEB9200"
	depends on ARCH_AT91RM9200
	help
	  Select this if you are using Embest's ATEB9200 board.
	  <http://www.embedinfo.com/english/product/ATEB9200.asp>

config MACH_KB9200
	bool "KwikByte KB920x"
	depends on ARCH_AT91RM9200
	help
	  Select this if you are using KwikByte's KB920x board.
	  <http://kwikbyte.com/KB9202_description_new.htm>

config MACH_PICOTUX2XX
	bool "picotux 200"
	depends on ARCH_AT91RM9200
	help
	  Select this if you are using a picotux 200.
	  <http://www.picotux.com/>

config MACH_KAFA
	bool "Sperry-Sun KAFA board"
	depends on ARCH_AT91RM9200
	help
	  Select this if you are using Sperry-Sun's KAFA board.

config MACH_ECBAT91
	bool "emQbit ECB_AT91 SBC"
	depends on ARCH_AT91RM9200
	help
	  Select this if you are using emQbit's ECB_AT91 board.
	  <http://wiki.emqbit.com/free-ecb-at91>

config MACH_YL9200
	bool "ucDragon YL-9200"
	depends on ARCH_AT91RM9200
	help
	  Select this if you are using the ucDragon YL-9200 board.

endif

# ----------------------------------------------------------

if ARCH_AT91SAM9260

comment "AT91SAM9260 Variants"

config ARCH_AT91SAM9260_SAM9XE
	bool "AT91SAM9XE"
	depends on ARCH_AT91SAM9260
	help
	  Select this if you are using Atmel's AT91SAM9XE System-on-Chip.
	  They are basically AT91SAM9260s with various sizes of embedded Flash.

comment "AT91SAM9260 / AT91SAM9XE Board Type"

config MACH_AT91SAM9260EK
	bool "Atmel AT91SAM9260-EK / AT91SAM9XE Evaluation Kit"
	depends on ARCH_AT91SAM9260
	help
	  Select this if you are using Atmel's AT91SAM9260-EK or AT91SAM9XE Evaluation Kit
	  <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3933>

config MACH_CAM60
	bool "KwikByte KB9260 (CAM60) board"
	depends on ARCH_AT91SAM9260
	help
	  Select this if you are using KwikByte's KB9260 (CAM60) board based on the Atmel AT91SAM9260.
	  <http://www.kwikbyte.com/KB9260.html>

config MACH_SAM9_L9260
	bool "Olimex SAM9-L9260 board"
	depends on ARCH_AT91SAM9260
	help
	  Select this if you are using Olimex's SAM9-L9260 board based on the Atmel AT91SAM9260.
	  <http://www.olimex.com/dev/sam9-L9260.html>

config MACH_USB_A9260
	bool "CALAO USB-A9260"
	depends on ARCH_AT91SAM9260
	help
	  Select this if you are using a Calao Systems USB-A9260.
	  <http://www.calao-systems.com>

config MACH_QIL_A9260
	bool "CALAO QIL-A9260 board"
	depends on ARCH_AT91SAM9260
	help
	  Select this if you are using a Calao Systems QIL-A9260 Board.
	  <http://www.calao-systems.com>

endif

# ----------------------------------------------------------

if ARCH_AT91SAM9261

comment "AT91SAM9261 Board Type"

config MACH_AT91SAM9261EK
	bool "Atmel AT91SAM9261-EK Evaluation Kit"
	depends on ARCH_AT91SAM9261
	help
	  Select this if you are using Atmel's AT91SAM9261-EK Evaluation Kit.
	  <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3820>

endif

# ----------------------------------------------------------

if ARCH_AT91SAM9263

comment "AT91SAM9263 Board Type"

config MACH_AT91SAM9263EK
	bool "Atmel AT91SAM9263-EK Evaluation Kit"
	depends on ARCH_AT91SAM9263
	help
	  Select this if you are using Atmel's AT91SAM9263-EK Evaluation Kit.
	  <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4057>

config MACH_USB_A9263
	bool "CALAO USB-A9263"
	depends on ARCH_AT91SAM9263
	help
	  Select this if you are using a Calao Systems USB-A9263.
	  <http://www.calao-systems.com>

endif

# ----------------------------------------------------------

if ARCH_AT91SAM9RL

comment "AT91SAM9RL Board Type"

config MACH_AT91SAM9RLEK
	bool "Atmel AT91SAM9RL-EK Evaluation Kit"
	depends on ARCH_AT91SAM9RL
	help
	  Select this if you are using Atmel's AT91SAM9RL-EK Evaluation Kit.

endif

# ----------------------------------------------------------

if ARCH_AT91CAP9

comment "AT91CAP9 Board Type"

config MACH_AT91CAP9ADK
	bool "Atmel AT91CAP9A-DK Evaluation Kit"
	depends on ARCH_AT91CAP9
	help
	  Select this if you are using Atmel's AT91CAP9A-DK Evaluation Kit.
	  <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4138>

endif

# ----------------------------------------------------------

if ARCH_AT91X40

comment "AT91X40 Board Type"

config MACH_AT91EB01
	bool "Atmel AT91EB01 Evaluation Kit"
	help
	  Select this if you are using Atmel's AT91EB01 Evaluation Kit.
	  It is also a popular target for simulators such as GDB's
	  ARM simulator (commonly known as the ARMulator) and the
	  Skyeye simulator.

endif

# ----------------------------------------------------------

comment "AT91 Board Options"

config MTD_AT91_DATAFLASH_CARD
	bool "Enable DataFlash Card support"
	depends on (ARCH_AT91RM9200DK || MACH_AT91RM9200EK || MACH_AT91SAM9260EK || MACH_AT91SAM9261EK || MACH_AT91SAM9263EK || MACH_AT91CAP9ADK || MACH_SAM9_L9260 || MACH_ECBAT91)
	help
	  Enable support for the DataFlash card.

config MTD_NAND_AT91_BUSWIDTH_16
	bool "Enable 16-bit data bus interface to NAND flash"
	depends on (MACH_AT91SAM9260EK || MACH_AT91SAM9261EK || MACH_AT91SAM9263EK || MACH_AT91CAP9ADK)
	help
	  On AT91SAM926x boards both types of NAND flash can be present
	  (8 and 16 bit data bus width).

# ----------------------------------------------------------

comment "AT91 Feature Selections"

config AT91_PROGRAMMABLE_CLOCKS
	bool "Programmable Clocks"
	help
	  Select this if you need to program one or more of the PCK0..PCK3
	  programmable clock outputs.

config AT91_TIMER_HZ
       int "Kernel HZ (jiffies per second)"
       range 32 1024
       depends on ARCH_AT91
       default "128" if ARCH_AT91RM9200
       default "100"
       help
	  On AT91rm9200 chips where you're using a system clock derived
	  from the 32768 Hz hardware clock, this tick rate should divide
	  it exactly: use a power-of-two value, such as 128 or 256, to
	  reduce timing errors caused by rounding.

	  On AT91sam926x chips, or otherwise when using a higher precision
	  system clock (of at least several MHz), rounding is less of a
	  problem so it can be safer to use a decimal values like 100.

choice
	prompt "Select a UART for early kernel messages"

config AT91_EARLY_DBGU
	bool "DBGU"

config AT91_EARLY_USART0
	bool "USART0"

config AT91_EARLY_USART1
	bool "USART1"

config AT91_EARLY_USART2
	bool "USART2"
	depends on ! ARCH_AT91X40

config AT91_EARLY_USART3
	bool "USART3"
	depends on (ARCH_AT91RM9200 || ARCH_AT91SAM9RL || ARCH_AT91SAM9260)

config AT91_EARLY_USART4
	bool "USART4"
	depends on ARCH_AT91SAM9260

config AT91_EARLY_USART5
	bool "USART5"
	depends on ARCH_AT91SAM9260

endchoice

endmenu

endif
Commit	Line	Data
8fc5ffa0 AV	1	if ARCH_AT91
	2
	3	menu "Atmel AT91 System-on-Chip"
	4
05043d08 AV	5	choice
05043d08 AV	6	prompt "Atmel AT91 Processor"
8fc5ffa0 AV	7
	8	config ARCH_AT91RM9200
	9	bool "AT91RM9200"
5e802dfa DB	10	select GENERIC_TIME
5e802dfa DB	11	select GENERIC_CLOCKEVENTS
73a59c1c	12
8fc5ffa0	13	config ARCH_AT91SAM9260
f7eee89b	14	bool "AT91SAM9260 or AT91SAM9XE"
ad48ce74 AV	15	select GENERIC_TIME
ad48ce74 AV	16	select GENERIC_CLOCKEVENTS
8fc5ffa0 AV	17
	18	config ARCH_AT91SAM9261
	19	bool "AT91SAM9261"
ad48ce74 AV	20	select GENERIC_TIME
ad48ce74 AV	21	select GENERIC_CLOCKEVENTS
8fc5ffa0	22
b2c65616 AV	23	config ARCH_AT91SAM9263
b2c65616 AV	24	bool "AT91SAM9263"
ad48ce74 AV	25	select GENERIC_TIME
ad48ce74 AV	26	select GENERIC_CLOCKEVENTS
b2c65616	27
877d7720 AV	28	config ARCH_AT91SAM9RL
877d7720 AV	29	bool "AT91SAM9RL"
ad48ce74 AV	30	select GENERIC_TIME
ad48ce74 AV	31	select GENERIC_CLOCKEVENTS
877d7720	32
2b3b3516 AV	33	config ARCH_AT91CAP9
2b3b3516 AV	34	bool "AT91CAP9"
ad48ce74 AV	35	select GENERIC_TIME
ad48ce74 AV	36	select GENERIC_CLOCKEVENTS
2b3b3516	37
9f1ccefe GU	38	config ARCH_AT91X40
	39	bool "AT91x40"
	40
05043d08 AV	41	endchoice
05043d08 AV	42
9f1ccefe GU	43	config AT91_PMC_UNIT
	44	bool
	45	default !ARCH_AT91X40
	46
8fc5ffa0 AV	47	# ----------------------------------------------------------
	48
	49	if ARCH_AT91RM9200
73a59c1c SP	50
	51	comment "AT91RM9200 Board Type"
	52
b184a4c9 LB	53	config MACH_ONEARM
	54	bool "Ajeco 1ARM Single Board Computer"
	55	depends on ARCH_AT91RM9200
	56	help
8fc5ffa0 AV	57	Select this if you are using Ajeco's 1ARM Single Board Computer.
8fc5ffa0 AV	58	<http://www.ajeco.fi/products.htm>
b184a4c9	59
73a59c1c SP	60	config ARCH_AT91RM9200DK
	61	bool "Atmel AT91RM9200-DK Development board"
	62	depends on ARCH_AT91RM9200
	63	help
8fc5ffa0 AV	64	Select this if you are using Atmel's AT91RM9200-DK Development board.
	65	(Discontinued)
	66
73a59c1c SP	67	config MACH_AT91RM9200EK
	68	bool "Atmel AT91RM9200-EK Evaluation Kit"
	69	depends on ARCH_AT91RM9200
	70	help
8fc5ffa0 AV	71	Select this if you are using Atmel's AT91RM9200-EK Evaluation Kit.
8fc5ffa0 AV	72	<http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3507>
73a59c1c SP	73
73a59c1c SP	74	config MACH_CSB337
8fc5ffa0	75	bool "Cogent CSB337"
73a59c1c SP	76	depends on ARCH_AT91RM9200
73a59c1c SP	77	help
8fc5ffa0 AV	78	Select this if you are using Cogent's CSB337 board.
8fc5ffa0 AV	79	<http://www.cogcomp.com/csb_csb337.htm>
73a59c1c SP	80
73a59c1c SP	81	config MACH_CSB637
8fc5ffa0	82	bool "Cogent CSB637"
73a59c1c SP	83	depends on ARCH_AT91RM9200
73a59c1c SP	84	help
8fc5ffa0 AV	85	Select this if you are using Cogent's CSB637 board.
8fc5ffa0 AV	86	<http://www.cogcomp.com/csb_csb637.htm>
73a59c1c SP	87
73a59c1c SP	88	config MACH_CARMEVA
8fc5ffa0	89	bool "Conitec ARM&EVA"
73a59c1c SP	90	depends on ARCH_AT91RM9200
73a59c1c SP	91	help
8fc5ffa0 AV	92	Select this if you are using Conitec's AT91RM9200-MCU-Module.
8fc5ffa0 AV	93	<http://www.conitec.net/english/linuxboard.htm>
73a59c1c	94
8fc5ffa0 AV	95	config MACH_ATEB9200
8fc5ffa0 AV	96	bool "Embest ATEB9200"
73a59c1c SP	97	depends on ARCH_AT91RM9200
73a59c1c SP	98	help
8fc5ffa0 AV	99	Select this if you are using Embest's ATEB9200 board.
8fc5ffa0 AV	100	<http://www.embedinfo.com/english/product/ATEB9200.asp>
73a59c1c	101
8fc5ffa0 AV	102	config MACH_KB9200
8fc5ffa0 AV	103	bool "KwikByte KB920x"
6902f523 AV	104	depends on ARCH_AT91RM9200
6902f523 AV	105	help
8fc5ffa0 AV	106	Select this if you are using KwikByte's KB920x board.
8fc5ffa0 AV	107	<http://kwikbyte.com/KB9202_description_new.htm>
6902f523	108
5d01f133 SR	109	config MACH_PICOTUX2XX
	110	bool "picotux 200"
	111	depends on ARCH_AT91RM9200
	112	help
	113	Select this if you are using a picotux 200.
	114	<http://www.picotux.com/>
	115
6902f523 AV	116	config MACH_KAFA
	117	bool "Sperry-Sun KAFA board"
	118	depends on ARCH_AT91RM9200
	119	help
8fc5ffa0 AV	120	Select this if you are using Sperry-Sun's KAFA board.
8fc5ffa0 AV	121
2f036ac6 AV	122	config MACH_ECBAT91
	123	bool "emQbit ECB_AT91 SBC"
	124	depends on ARCH_AT91RM9200
	125	help
	126	Select this if you are using emQbit's ECB_AT91 board.
	127	<http://wiki.emqbit.com/free-ecb-at91>
	128
e3ba22db AV	129	config MACH_YL9200
	130	bool "ucDragon YL-9200"
	131	depends on ARCH_AT91RM9200
	132	help
	133	Select this if you are using the ucDragon YL-9200 board.
	134
8fc5ffa0 AV	135	endif
	136
	137	# ----------------------------------------------------------
	138
	139	if ARCH_AT91SAM9260
	140
f7eee89b AV	141	comment "AT91SAM9260 Variants"
	142
	143	config ARCH_AT91SAM9260_SAM9XE
	144	bool "AT91SAM9XE"
	145	depends on ARCH_AT91SAM9260
	146	help
	147	Select this if you are using Atmel's AT91SAM9XE System-on-Chip.
a982ac06	148	They are basically AT91SAM9260s with various sizes of embedded Flash.
f7eee89b AV	149
f7eee89b AV	150	comment "AT91SAM9260 / AT91SAM9XE Board Type"
8fc5ffa0	151
58a0cd78	152	config MACH_AT91SAM9260EK
f7eee89b	153	bool "Atmel AT91SAM9260-EK / AT91SAM9XE Evaluation Kit"
58a0cd78 AV	154	depends on ARCH_AT91SAM9260
58a0cd78 AV	155	help
f7eee89b	156	Select this if you are using Atmel's AT91SAM9260-EK or AT91SAM9XE Evaluation Kit
58a0cd78 AV	157	<http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3933>
58a0cd78 AV	158
35131fb6 AV	159	config MACH_CAM60
	160	bool "KwikByte KB9260 (CAM60) board"
	161	depends on ARCH_AT91SAM9260
	162	help
	163	Select this if you are using KwikByte's KB9260 (CAM60) board based on the Atmel AT91SAM9260.
	164	<http://www.kwikbyte.com/KB9260.html>
	165
66dbfc6c AV	166	config MACH_SAM9_L9260
	167	bool "Olimex SAM9-L9260 board"
	168	depends on ARCH_AT91SAM9260
	169	help
	170	Select this if you are using Olimex's SAM9-L9260 board based on the Atmel AT91SAM9260.
	171	<http://www.olimex.com/dev/sam9-L9260.html>
	172
ca0a789a AV	173	config MACH_USB_A9260
	174	bool "CALAO USB-A9260"
	175	depends on ARCH_AT91SAM9260
	176	help
	177	Select this if you are using a Calao Systems USB-A9260.
	178	<http://www.calao-systems.com>
	179
	180	config MACH_QIL_A9260
	181	bool "CALAO QIL-A9260 board"
	182	depends on ARCH_AT91SAM9260
	183	help
	184	Select this if you are using a Calao Systems QIL-A9260 Board.
	185	<http://www.calao-systems.com>
	186
8fc5ffa0 AV	187	endif
	188
	189	# ----------------------------------------------------------
	190
	191	if ARCH_AT91SAM9261
	192
	193	comment "AT91SAM9261 Board Type"
	194
58a0cd78 AV	195	config MACH_AT91SAM9261EK
	196	bool "Atmel AT91SAM9261-EK Evaluation Kit"
	197	depends on ARCH_AT91SAM9261
	198	help
	199	Select this if you are using Atmel's AT91SAM9261-EK Evaluation Kit.
	200	<http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3820>
	201
8fc5ffa0 AV	202	endif
8fc5ffa0 AV	203
58a0cd78 AV	204	# ----------------------------------------------------------
58a0cd78 AV	205
e6d92e63 AV	206	if ARCH_AT91SAM9263
	207
	208	comment "AT91SAM9263 Board Type"
	209
	210	config MACH_AT91SAM9263EK
	211	bool "Atmel AT91SAM9263-EK Evaluation Kit"
	212	depends on ARCH_AT91SAM9263
	213	help
	214	Select this if you are using Atmel's AT91SAM9263-EK Evaluation Kit.
	215	<http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4057>
	216
ca0a789a AV	217	config MACH_USB_A9263
	218	bool "CALAO USB-A9263"
	219	depends on ARCH_AT91SAM9263
	220	help
	221	Select this if you are using a Calao Systems USB-A9263.
	222	<http://www.calao-systems.com>
	223
e6d92e63 AV	224	endif
	225
	226	# ----------------------------------------------------------
	227
c42dcb3d AV	228	if ARCH_AT91SAM9RL
	229
	230	comment "AT91SAM9RL Board Type"
	231
	232	config MACH_AT91SAM9RLEK
	233	bool "Atmel AT91SAM9RL-EK Evaluation Kit"
	234	depends on ARCH_AT91SAM9RL
	235	help
	236	Select this if you are using Atmel's AT91SAM9RL-EK Evaluation Kit.
	237
	238	endif
	239
	240	# ----------------------------------------------------------
	241
86640cae AV	242	if ARCH_AT91CAP9
	243
	244	comment "AT91CAP9 Board Type"
	245
	246	config MACH_AT91CAP9ADK
	247	bool "Atmel AT91CAP9A-DK Evaluation Kit"
	248	depends on ARCH_AT91CAP9
	249	help
	250	Select this if you are using Atmel's AT91CAP9A-DK Evaluation Kit.
	251	<http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4138>
	252
	253	endif
	254
	255	# ----------------------------------------------------------
	256
9f1ccefe GU	257	if ARCH_AT91X40
	258
	259	comment "AT91X40 Board Type"
	260
	261	config MACH_AT91EB01
	262	bool "Atmel AT91EB01 Evaluation Kit"
	263	help
	264	Select this if you are using Atmel's AT91EB01 Evaluation Kit.
	265	It is also a popular target for simulators such as GDB's
	266	ARM simulator (commonly known as the ARMulator) and the
	267	Skyeye simulator.
	268
	269	endif
	270
	271	# ----------------------------------------------------------
	272
58a0cd78 AV	273	comment "AT91 Board Options"
	274
	275	config MTD_AT91_DATAFLASH_CARD
	276	bool "Enable DataFlash Card support"
2f036ac6	277	depends on (ARCH_AT91RM9200DK \|\| MACH_AT91RM9200EK \|\| MACH_AT91SAM9260EK \|\| MACH_AT91SAM9261EK \|\| MACH_AT91SAM9263EK \|\| MACH_AT91CAP9ADK \|\| MACH_SAM9_L9260 \|\| MACH_ECBAT91)
58a0cd78 AV	278	help
	279	Enable support for the DataFlash card.
	280
	281	config MTD_NAND_AT91_BUSWIDTH_16
	282	bool "Enable 16-bit data bus interface to NAND flash"
86640cae	283	depends on (MACH_AT91SAM9260EK \|\| MACH_AT91SAM9261EK \|\| MACH_AT91SAM9263EK \|\| MACH_AT91CAP9ADK)
58a0cd78 AV	284	help
	285	On AT91SAM926x boards both types of NAND flash can be present
	286	(8 and 16 bit data bus width).
6902f523	287
8fc5ffa0	288	# ----------------------------------------------------------
73a59c1c	289
8fc5ffa0	290	comment "AT91 Feature Selections"
73a59c1c SP	291
	292	config AT91_PROGRAMMABLE_CLOCKS
	293	bool "Programmable Clocks"
	294	help
	295	Select this if you need to program one or more of the PCK0..PCK3
	296	programmable clock outputs.
	297
5248c657 DB	298	config AT91_TIMER_HZ
	299	int "Kernel HZ (jiffies per second)"
	300	range 32 1024
	301	depends on ARCH_AT91
	302	default "128" if ARCH_AT91RM9200
	303	default "100"
	304	help
	305	On AT91rm9200 chips where you're using a system clock derived
	306	from the 32768 Hz hardware clock, this tick rate should divide
	307	it exactly: use a power-of-two value, such as 128 or 256, to
	308	reduce timing errors caused by rounding.
	309
	310	On AT91sam926x chips, or otherwise when using a higher precision
	311	system clock (of at least several MHz), rounding is less of a
	312	problem so it can be safer to use a decimal values like 100.
	313
fa3218d8 GL	314	choice
	315	prompt "Select a UART for early kernel messages"
	316
	317	config AT91_EARLY_DBGU
	318	bool "DBGU"
	319
	320	config AT91_EARLY_USART0
	321	bool "USART0"
	322
	323	config AT91_EARLY_USART1
	324	bool "USART1"
	325
	326	config AT91_EARLY_USART2
	327	bool "USART2"
	328	depends on ! ARCH_AT91X40
	329
	330	config AT91_EARLY_USART3
	331	bool "USART3"
	332	depends on (ARCH_AT91RM9200 \|\| ARCH_AT91SAM9RL \|\| ARCH_AT91SAM9260)
	333
	334	config AT91_EARLY_USART4
	335	bool "USART4"
	336	depends on ARCH_AT91SAM9260
	337
	338	config AT91_EARLY_USART5
	339	bool "USART5"
	340	depends on ARCH_AT91SAM9260
	341
	342	endchoice
	343
73a59c1c SP	344	endmenu
	345
	346	endif