Commit | Line | Data |
---|---|---|
8fc5ffa0 AV |
1 | if ARCH_AT91 |
2 | ||
2ef9f59a JCPV |
3 | config HAVE_AT91_DATAFLASH_CARD |
4 | bool | |
5 | ||
13079a73 JCPV |
6 | config HAVE_AT91_DBGU0 |
7 | bool | |
8 | ||
9 | config HAVE_AT91_DBGU1 | |
10 | bool | |
11 | ||
c0177594 JCPV |
12 | config AT91_SAM9_ALT_RESET |
13 | bool | |
21ea52aa | 14 | default !ARCH_AT91X40 |
c0177594 | 15 | |
14f991a7 JCPV |
16 | config AT91_SAM9G45_RESET |
17 | bool | |
21ea52aa | 18 | default !ARCH_AT91X40 |
14f991a7 | 19 | |
1441bd32 JCPV |
20 | config SOC_AT91SAM9 |
21 | bool | |
22 | select GENERIC_CLOCKEVENTS | |
23 | select CPU_ARM926T | |
24 | ||
8fc5ffa0 AV |
25 | menu "Atmel AT91 System-on-Chip" |
26 | ||
05043d08 AV |
27 | choice |
28 | prompt "Atmel AT91 Processor" | |
8fc5ffa0 AV |
29 | |
30 | config ARCH_AT91RM9200 | |
31 | bool "AT91RM9200" | |
c750815e | 32 | select CPU_ARM920T |
5e802dfa | 33 | select GENERIC_CLOCKEVENTS |
13079a73 | 34 | select HAVE_AT91_DBGU0 |
73a59c1c | 35 | |
8fc5ffa0 | 36 | config ARCH_AT91SAM9260 |
f7eee89b | 37 | bool "AT91SAM9260 or AT91SAM9XE" |
1441bd32 | 38 | select SOC_AT91SAM9 |
13079a73 | 39 | select HAVE_AT91_DBGU0 |
ee621dd6 | 40 | select HAVE_NET_MACB |
8fc5ffa0 AV |
41 | |
42 | config ARCH_AT91SAM9261 | |
43 | bool "AT91SAM9261" | |
1441bd32 | 44 | select SOC_AT91SAM9 |
0912e535 | 45 | select HAVE_FB_ATMEL |
13079a73 | 46 | select HAVE_AT91_DBGU0 |
8fc5ffa0 | 47 | |
b319ff80 NF |
48 | config ARCH_AT91SAM9G10 |
49 | bool "AT91SAM9G10" | |
1441bd32 | 50 | select SOC_AT91SAM9 |
13079a73 | 51 | select HAVE_AT91_DBGU0 |
0912e535 | 52 | select HAVE_FB_ATMEL |
b319ff80 | 53 | |
b2c65616 AV |
54 | config ARCH_AT91SAM9263 |
55 | bool "AT91SAM9263" | |
1441bd32 | 56 | select SOC_AT91SAM9 |
0912e535 | 57 | select HAVE_FB_ATMEL |
ee621dd6 | 58 | select HAVE_NET_MACB |
13079a73 | 59 | select HAVE_AT91_DBGU1 |
b2c65616 | 60 | |
877d7720 AV |
61 | config ARCH_AT91SAM9RL |
62 | bool "AT91SAM9RL" | |
1441bd32 | 63 | select SOC_AT91SAM9 |
0912e535 | 64 | select HAVE_FB_ATMEL |
13079a73 | 65 | select HAVE_AT91_DBGU0 |
877d7720 | 66 | |
61352667 | 67 | config ARCH_AT91SAM9G20 |
68 | bool "AT91SAM9G20" | |
1441bd32 | 69 | select SOC_AT91SAM9 |
13079a73 | 70 | select HAVE_AT91_DBGU0 |
ee621dd6 | 71 | select HAVE_NET_MACB |
61352667 | 72 | |
789b23bc | 73 | config ARCH_AT91SAM9G45 |
ca1dcbf7 | 74 | bool "AT91SAM9G45 or AT91SAM9M10 families" |
1441bd32 | 75 | select SOC_AT91SAM9 |
0912e535 | 76 | select HAVE_FB_ATMEL |
ee621dd6 | 77 | select HAVE_NET_MACB |
13079a73 | 78 | select HAVE_AT91_DBGU1 |
ca1dcbf7 NF |
79 | help |
80 | Select this if you are using one of Atmel's AT91SAM9G45 family SoC. | |
81 | This support covers AT91SAM9G45, AT91SAM9G46, AT91SAM9M10 and AT91SAM9M11. | |
789b23bc | 82 | |
9a3ee403 NF |
83 | config ARCH_AT91SAM9X5 |
84 | bool "AT91SAM9x5 family" | |
1441bd32 | 85 | select SOC_AT91SAM9 |
9a3ee403 NF |
86 | select HAVE_FB_ATMEL |
87 | select HAVE_NET_MACB | |
88 | select HAVE_AT91_DBGU0 | |
a26e1af5 NF |
89 | help |
90 | Select this if you are using one of Atmel's AT91SAM9x5 family SoC. | |
91 | This means that your SAM9 name finishes with a '5' (except if it is | |
92 | AT91SAM9G45!). | |
93 | This support covers AT91SAM9G15, AT91SAM9G25, AT91SAM9X25, AT91SAM9G35 | |
94 | and AT91SAM9X35. | |
9a3ee403 | 95 | |
9f1ccefe GU |
96 | config ARCH_AT91X40 |
97 | bool "AT91x40" | |
5cfc8ee0 | 98 | select ARCH_USES_GETTIMEOFFSET |
9f1ccefe | 99 | |
05043d08 AV |
100 | endchoice |
101 | ||
9f1ccefe GU |
102 | config AT91_PMC_UNIT |
103 | bool | |
104 | default !ARCH_AT91X40 | |
105 | ||
8fc5ffa0 AV |
106 | # ---------------------------------------------------------- |
107 | ||
108 | if ARCH_AT91RM9200 | |
73a59c1c SP |
109 | |
110 | comment "AT91RM9200 Board Type" | |
111 | ||
b184a4c9 LB |
112 | config MACH_ONEARM |
113 | bool "Ajeco 1ARM Single Board Computer" | |
b184a4c9 | 114 | help |
8fc5ffa0 | 115 | Select this if you are using Ajeco's 1ARM Single Board Computer. |
50a23e6e | 116 | <http://www.ajeco.fi/> |
b184a4c9 | 117 | |
73a59c1c SP |
118 | config ARCH_AT91RM9200DK |
119 | bool "Atmel AT91RM9200-DK Development board" | |
2ef9f59a | 120 | select HAVE_AT91_DATAFLASH_CARD |
73a59c1c | 121 | help |
8fc5ffa0 AV |
122 | Select this if you are using Atmel's AT91RM9200-DK Development board. |
123 | (Discontinued) | |
124 | ||
73a59c1c SP |
125 | config MACH_AT91RM9200EK |
126 | bool "Atmel AT91RM9200-EK Evaluation Kit" | |
2ef9f59a | 127 | select HAVE_AT91_DATAFLASH_CARD |
73a59c1c | 128 | help |
8fc5ffa0 AV |
129 | Select this if you are using Atmel's AT91RM9200-EK Evaluation Kit. |
130 | <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3507> | |
73a59c1c SP |
131 | |
132 | config MACH_CSB337 | |
8fc5ffa0 | 133 | bool "Cogent CSB337" |
73a59c1c | 134 | help |
8fc5ffa0 AV |
135 | Select this if you are using Cogent's CSB337 board. |
136 | <http://www.cogcomp.com/csb_csb337.htm> | |
73a59c1c SP |
137 | |
138 | config MACH_CSB637 | |
8fc5ffa0 | 139 | bool "Cogent CSB637" |
73a59c1c | 140 | help |
8fc5ffa0 AV |
141 | Select this if you are using Cogent's CSB637 board. |
142 | <http://www.cogcomp.com/csb_csb637.htm> | |
73a59c1c SP |
143 | |
144 | config MACH_CARMEVA | |
8fc5ffa0 | 145 | bool "Conitec ARM&EVA" |
73a59c1c | 146 | help |
8fc5ffa0 | 147 | Select this if you are using Conitec's AT91RM9200-MCU-Module. |
50a23e6e | 148 | <http://www.conitec.net/english/linuxboard.php> |
73a59c1c | 149 | |
8fc5ffa0 AV |
150 | config MACH_ATEB9200 |
151 | bool "Embest ATEB9200" | |
73a59c1c | 152 | help |
8fc5ffa0 AV |
153 | Select this if you are using Embest's ATEB9200 board. |
154 | <http://www.embedinfo.com/english/product/ATEB9200.asp> | |
73a59c1c | 155 | |
8fc5ffa0 AV |
156 | config MACH_KB9200 |
157 | bool "KwikByte KB920x" | |
6902f523 | 158 | help |
8fc5ffa0 | 159 | Select this if you are using KwikByte's KB920x board. |
50a23e6e | 160 | <http://www.kwikbyte.com/KB9202.html> |
6902f523 | 161 | |
5d01f133 SR |
162 | config MACH_PICOTUX2XX |
163 | bool "picotux 200" | |
5d01f133 SR |
164 | help |
165 | Select this if you are using a picotux 200. | |
166 | <http://www.picotux.com/> | |
167 | ||
6902f523 AV |
168 | config MACH_KAFA |
169 | bool "Sperry-Sun KAFA board" | |
6902f523 | 170 | help |
8fc5ffa0 AV |
171 | Select this if you are using Sperry-Sun's KAFA board. |
172 | ||
2f036ac6 AV |
173 | config MACH_ECBAT91 |
174 | bool "emQbit ECB_AT91 SBC" | |
2ef9f59a | 175 | select HAVE_AT91_DATAFLASH_CARD |
2f036ac6 AV |
176 | help |
177 | Select this if you are using emQbit's ECB_AT91 board. | |
178 | <http://wiki.emqbit.com/free-ecb-at91> | |
179 | ||
e3ba22db AV |
180 | config MACH_YL9200 |
181 | bool "ucDragon YL-9200" | |
e3ba22db AV |
182 | help |
183 | Select this if you are using the ucDragon YL-9200 board. | |
184 | ||
10233a93 EB |
185 | config MACH_CPUAT91 |
186 | bool "Eukrea CPUAT91" | |
10233a93 EB |
187 | help |
188 | Select this if you are using the Eukrea Electromatique's | |
189 | CPUAT91 board <http://www.eukrea.com/>. | |
190 | ||
01c62c9b UKK |
191 | config MACH_ECO920 |
192 | bool "eco920" | |
193 | help | |
194 | Select this if you are using the eco920 board | |
195 | ||
82cb8654 JH |
196 | config MACH_RSI_EWS |
197 | bool "RSI Embedded Webserver" | |
198 | depends on ARCH_AT91RM9200 | |
199 | help | |
200 | Select this if you are using RSIs EWS board. | |
8fc5ffa0 AV |
201 | endif |
202 | ||
203 | # ---------------------------------------------------------- | |
204 | ||
205 | if ARCH_AT91SAM9260 | |
206 | ||
f7eee89b AV |
207 | comment "AT91SAM9260 Variants" |
208 | ||
f7eee89b | 209 | comment "AT91SAM9260 / AT91SAM9XE Board Type" |
8fc5ffa0 | 210 | |
58a0cd78 | 211 | config MACH_AT91SAM9260EK |
f7eee89b | 212 | bool "Atmel AT91SAM9260-EK / AT91SAM9XE Evaluation Kit" |
2ef9f59a | 213 | select HAVE_AT91_DATAFLASH_CARD |
58a0cd78 | 214 | help |
f7eee89b | 215 | Select this if you are using Atmel's AT91SAM9260-EK or AT91SAM9XE Evaluation Kit |
58a0cd78 AV |
216 | <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3933> |
217 | ||
35131fb6 AV |
218 | config MACH_CAM60 |
219 | bool "KwikByte KB9260 (CAM60) board" | |
35131fb6 AV |
220 | help |
221 | Select this if you are using KwikByte's KB9260 (CAM60) board based on the Atmel AT91SAM9260. | |
222 | <http://www.kwikbyte.com/KB9260.html> | |
223 | ||
66dbfc6c AV |
224 | config MACH_SAM9_L9260 |
225 | bool "Olimex SAM9-L9260 board" | |
2ef9f59a | 226 | select HAVE_AT91_DATAFLASH_CARD |
66dbfc6c AV |
227 | help |
228 | Select this if you are using Olimex's SAM9-L9260 board based on the Atmel AT91SAM9260. | |
229 | <http://www.olimex.com/dev/sam9-L9260.html> | |
230 | ||
9c784f95 SL |
231 | config MACH_AFEB9260 |
232 | bool "Custom afeb9260 board v1" | |
9c784f95 SL |
233 | help |
234 | Select this if you are using custom afeb9260 board based on | |
235 | open hardware design. Select this for revision 1 of the board. | |
236 | <svn://194.85.238.22/home/users/george/svn/arm9eb> | |
237 | <http://groups.google.com/group/arm9fpga-evolution-board> | |
238 | ||
ca0a789a AV |
239 | config MACH_USB_A9260 |
240 | bool "CALAO USB-A9260" | |
ca0a789a AV |
241 | help |
242 | Select this if you are using a Calao Systems USB-A9260. | |
243 | <http://www.calao-systems.com> | |
244 | ||
245 | config MACH_QIL_A9260 | |
246 | bool "CALAO QIL-A9260 board" | |
ca0a789a AV |
247 | help |
248 | Select this if you are using a Calao Systems QIL-A9260 Board. | |
249 | <http://www.calao-systems.com> | |
250 | ||
41a353d1 EB |
251 | config MACH_CPU9260 |
252 | bool "Eukrea CPU9260 board" | |
41a353d1 EB |
253 | help |
254 | Select this if you are using a Eukrea Electromatique's | |
255 | CPU9260 Board <http://www.eukrea.com/> | |
256 | ||
8ed90595 MO |
257 | config MACH_FLEXIBITY |
258 | bool "Flexibity Connect board" | |
259 | help | |
260 | Select this if you are using Flexibity Connect board | |
261 | <http://www.flexibity.com> | |
262 | ||
8fc5ffa0 AV |
263 | endif |
264 | ||
265 | # ---------------------------------------------------------- | |
266 | ||
267 | if ARCH_AT91SAM9261 | |
268 | ||
269 | comment "AT91SAM9261 Board Type" | |
270 | ||
58a0cd78 AV |
271 | config MACH_AT91SAM9261EK |
272 | bool "Atmel AT91SAM9261-EK Evaluation Kit" | |
2ef9f59a | 273 | select HAVE_AT91_DATAFLASH_CARD |
58a0cd78 AV |
274 | help |
275 | Select this if you are using Atmel's AT91SAM9261-EK Evaluation Kit. | |
276 | <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3820> | |
277 | ||
8fc5ffa0 AV |
278 | endif |
279 | ||
58a0cd78 AV |
280 | # ---------------------------------------------------------- |
281 | ||
b319ff80 NF |
282 | if ARCH_AT91SAM9G10 |
283 | ||
284 | comment "AT91SAM9G10 Board Type" | |
285 | ||
286 | config MACH_AT91SAM9G10EK | |
287 | bool "Atmel AT91SAM9G10-EK Evaluation Kit" | |
2ef9f59a | 288 | select HAVE_AT91_DATAFLASH_CARD |
b319ff80 NF |
289 | help |
290 | Select this if you are using Atmel's AT91SAM9G10-EK Evaluation Kit. | |
291 | <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4588> | |
292 | ||
293 | endif | |
294 | ||
295 | # ---------------------------------------------------------- | |
296 | ||
e6d92e63 AV |
297 | if ARCH_AT91SAM9263 |
298 | ||
299 | comment "AT91SAM9263 Board Type" | |
300 | ||
301 | config MACH_AT91SAM9263EK | |
302 | bool "Atmel AT91SAM9263-EK Evaluation Kit" | |
2ef9f59a | 303 | select HAVE_AT91_DATAFLASH_CARD |
e6d92e63 AV |
304 | help |
305 | Select this if you are using Atmel's AT91SAM9263-EK Evaluation Kit. | |
306 | <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4057> | |
307 | ||
ca0a789a AV |
308 | config MACH_USB_A9263 |
309 | bool "CALAO USB-A9263" | |
ca0a789a AV |
310 | help |
311 | Select this if you are using a Calao Systems USB-A9263. | |
312 | <http://www.calao-systems.com> | |
313 | ||
ffc63b7d AV |
314 | config MACH_NEOCORE926 |
315 | bool "Adeneo NEOCORE926" | |
2ef9f59a | 316 | select HAVE_AT91_DATAFLASH_CARD |
ffc63b7d AV |
317 | help |
318 | Select this if you are using the Adeneo Neocore 926 board. | |
319 | ||
e6d92e63 AV |
320 | endif |
321 | ||
322 | # ---------------------------------------------------------- | |
323 | ||
c42dcb3d AV |
324 | if ARCH_AT91SAM9RL |
325 | ||
326 | comment "AT91SAM9RL Board Type" | |
327 | ||
328 | config MACH_AT91SAM9RLEK | |
329 | bool "Atmel AT91SAM9RL-EK Evaluation Kit" | |
c42dcb3d AV |
330 | help |
331 | Select this if you are using Atmel's AT91SAM9RL-EK Evaluation Kit. | |
332 | ||
333 | endif | |
334 | ||
335 | # ---------------------------------------------------------- | |
336 | ||
61352667 | 337 | if ARCH_AT91SAM9G20 |
338 | ||
339 | comment "AT91SAM9G20 Board Type" | |
340 | ||
341 | config MACH_AT91SAM9G20EK | |
342 | bool "Atmel AT91SAM9G20-EK Evaluation Kit" | |
2ef9f59a | 343 | select HAVE_AT91_DATAFLASH_CARD |
61352667 | 344 | help |
0f74296a NF |
345 | Select this if you are using Atmel's AT91SAM9G20-EK Evaluation Kit |
346 | that embeds only one SD/MMC slot. | |
347 | ||
348 | config MACH_AT91SAM9G20EK_2MMC | |
a6e016f1 | 349 | depends on MACH_AT91SAM9G20EK |
0f74296a | 350 | bool "Atmel AT91SAM9G20-EK Evaluation Kit with 2 SD/MMC Slots" |
0f74296a NF |
351 | help |
352 | Select this if you are using an Atmel AT91SAM9G20-EK Evaluation Kit | |
353 | with 2 SD/MMC Slots. This is the case for AT91SAM9G20-EK rev. C and | |
354 | onwards. | |
ff65e398 | 355 | <http://www.atmel.com/tools/SAM9G20-EK.aspx> |
61352667 | 356 | |
41a353d1 EB |
357 | config MACH_CPU9G20 |
358 | bool "Eukrea CPU9G20 board" | |
41a353d1 EB |
359 | help |
360 | Select this if you are using a Eukrea Electromatique's | |
361 | CPU9G20 Board <http://www.eukrea.com/> | |
362 | ||
0fb55d3b ST |
363 | config MACH_ACMENETUSFOXG20 |
364 | bool "Acme Systems srl FOX Board G20" | |
365 | help | |
366 | Select this if you are using Acme Systems | |
367 | FOX Board G20 <http://www.acmesystems.it> | |
368 | ||
9b404b7c CG |
369 | config MACH_PORTUXG20 |
370 | bool "taskit PortuxG20" | |
371 | help | |
372 | Select this if you are using taskit's PortuxG20. | |
373 | <http://www.taskit.de/en/> | |
374 | ||
375 | config MACH_STAMP9G20 | |
376 | bool "taskit Stamp9G20 CPU module" | |
377 | help | |
378 | Select this if you are using taskit's Stamp9G20 CPU module on its | |
379 | evaluation board. | |
380 | <http://www.taskit.de/en/> | |
381 | ||
abf0c1bc PG |
382 | config MACH_PCONTROL_G20 |
383 | bool "PControl G20 CPU module" | |
384 | help | |
385 | Select this if you are using taskit's Stamp9G20 CPU module on this | |
386 | carrier board, beeing the decentralized unit of a building automation | |
387 | system; featuring nvram, eth-switch, iso-rs485, display, io | |
fcdc2ea7 IP |
388 | |
389 | config MACH_GSIA18S | |
390 | bool "GS_IA18_S board" | |
391 | help | |
392 | This enables support for the GS_IA18_S board | |
393 | produced by GeoSIG Ltd company. This is an internet accelerograph. | |
394 | <http://www.geosig.com> | |
0a072a24 JCPV |
395 | |
396 | config MACH_USB_A9G20 | |
397 | bool "CALAO USB-A9G20" | |
398 | depends on ARCH_AT91SAM9G20 | |
399 | help | |
400 | Select this if you are using a Calao Systems USB-A9G20. | |
401 | <http://www.calao-systems.com> | |
402 | ||
61352667 | 403 | endif |
404 | ||
064baaca RM |
405 | if (ARCH_AT91SAM9260 || ARCH_AT91SAM9G20) |
406 | comment "AT91SAM9260/AT91SAM9G20 boards" | |
407 | ||
408 | config MACH_SNAPPER_9260 | |
409 | bool "Bluewater Systems Snapper 9260/9G20 module" | |
410 | help | |
411 | Select this if you are using the Bluewater Systems Snapper 9260 or | |
412 | Snapper 9G20 modules. | |
413 | <http://www.bluewatersys.com/> | |
414 | endif | |
415 | ||
61352667 | 416 | # ---------------------------------------------------------- |
417 | ||
789b23bc NF |
418 | if ARCH_AT91SAM9G45 |
419 | ||
420 | comment "AT91SAM9G45 Board Type" | |
421 | ||
67dd8995 JCPV |
422 | config MACH_AT91SAM9M10G45EK |
423 | bool "Atmel AT91SAM9M10G45-EK Evaluation Kits" | |
789b23bc | 424 | help |
fefbc407 NF |
425 | Select this if you are using Atmel's AT91SAM9M10G45-EK Evaluation Kit. |
426 | Those boards can be populated with any SoC of AT91SAM9G45 or AT91SAM9M10 | |
427 | families: AT91SAM9G45, AT91SAM9G46, AT91SAM9M10 and AT91SAM9M11. | |
428 | <http://www.atmel.com/tools/SAM9M10-G45-EK.aspx> | |
789b23bc NF |
429 | |
430 | endif | |
431 | ||
432 | # ---------------------------------------------------------- | |
433 | ||
9f1ccefe GU |
434 | if ARCH_AT91X40 |
435 | ||
436 | comment "AT91X40 Board Type" | |
437 | ||
438 | config MACH_AT91EB01 | |
439 | bool "Atmel AT91EB01 Evaluation Kit" | |
440 | help | |
441 | Select this if you are using Atmel's AT91EB01 Evaluation Kit. | |
442 | It is also a popular target for simulators such as GDB's | |
443 | ARM simulator (commonly known as the ARMulator) and the | |
444 | Skyeye simulator. | |
445 | ||
446 | endif | |
447 | ||
448 | # ---------------------------------------------------------- | |
449 | ||
49fe2ba3 NF |
450 | comment "Generic Board Type" |
451 | ||
452 | config MACH_AT91SAM_DT | |
453 | bool "Atmel AT91SAM Evaluation Kits with device-tree support" | |
454 | select USE_OF | |
455 | help | |
456 | Select this if you want to experiment device-tree with | |
457 | an Atmel Evaluation Kit. | |
458 | ||
459 | # ---------------------------------------------------------- | |
460 | ||
58a0cd78 AV |
461 | comment "AT91 Board Options" |
462 | ||
463 | config MTD_AT91_DATAFLASH_CARD | |
464 | bool "Enable DataFlash Card support" | |
2ef9f59a | 465 | depends on HAVE_AT91_DATAFLASH_CARD |
58a0cd78 AV |
466 | help |
467 | Enable support for the DataFlash card. | |
468 | ||
8fc5ffa0 | 469 | # ---------------------------------------------------------- |
73a59c1c | 470 | |
8fc5ffa0 | 471 | comment "AT91 Feature Selections" |
73a59c1c SP |
472 | |
473 | config AT91_PROGRAMMABLE_CLOCKS | |
474 | bool "Programmable Clocks" | |
475 | help | |
476 | Select this if you need to program one or more of the PCK0..PCK3 | |
477 | programmable clock outputs. | |
478 | ||
eaad2db0 AV |
479 | config AT91_SLOW_CLOCK |
480 | bool "Suspend-to-RAM disables main oscillator" | |
481 | depends on SUSPEND | |
482 | help | |
483 | Select this if you want Suspend-to-RAM to save the most power | |
484 | possible (without powering off the CPU) by disabling the PLLs | |
485 | and main oscillator so that only the 32 KiHz clock is available. | |
486 | ||
487 | When only that slow-clock is available, some peripherals lose | |
488 | functionality. Many can't issue wakeup events unless faster | |
489 | clocks are available. Some lose their operating state and | |
490 | need to be completely re-initialized. | |
491 | ||
5248c657 DB |
492 | config AT91_TIMER_HZ |
493 | int "Kernel HZ (jiffies per second)" | |
494 | range 32 1024 | |
495 | depends on ARCH_AT91 | |
496 | default "128" if ARCH_AT91RM9200 | |
497 | default "100" | |
498 | help | |
499 | On AT91rm9200 chips where you're using a system clock derived | |
500 | from the 32768 Hz hardware clock, this tick rate should divide | |
501 | it exactly: use a power-of-two value, such as 128 or 256, to | |
502 | reduce timing errors caused by rounding. | |
503 | ||
504 | On AT91sam926x chips, or otherwise when using a higher precision | |
505 | system clock (of at least several MHz), rounding is less of a | |
506 | problem so it can be safer to use a decimal values like 100. | |
507 | ||
73a59c1c SP |
508 | endmenu |
509 | ||
510 | endif |