blob: dc21df16616119f8341077fd5131537065590088 [file] [log] [blame]
Tony Lindgrena0694862013-01-11 11:24:20 -08001config ARCH_OMAP
2 bool
3
Arnd Bergmann59d92872013-05-01 00:02:26 +02004config ARCH_OMAP2
5 bool "TI OMAP2"
6 depends on ARCH_MULTI_V6
7 select ARCH_OMAP2PLUS
8 select CPU_V6
9 select MULTI_IRQ_HANDLER
10 select SOC_HAS_OMAP2_SDRC
Arnd Bergmann59d92872013-05-01 00:02:26 +020011
12config ARCH_OMAP3
13 bool "TI OMAP3"
14 depends on ARCH_MULTI_V7
15 select ARCH_OMAP2PLUS
16 select ARCH_HAS_OPP
17 select ARM_CPU_SUSPEND if PM
18 select CPU_V7
19 select MULTI_IRQ_HANDLER
20 select OMAP_INTERCONNECT
21 select PM_OPP if PM
22 select PM_RUNTIME if CPU_IDLE
23 select SOC_HAS_OMAP2_SDRC
Arnd Bergmann59d92872013-05-01 00:02:26 +020024 select USB_ARCH_HAS_EHCI if USB_SUPPORT
25
26config ARCH_OMAP4
27 bool "TI OMAP4"
28 depends on ARCH_MULTI_V7
29 select ARCH_OMAP2PLUS
30 select ARCH_HAS_OPP
31 select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
32 select ARM_CPU_SUSPEND if PM
33 select ARM_ERRATA_720789
34 select ARM_GIC
35 select CACHE_L2X0
36 select CPU_V7
37 select HAVE_ARM_SCU if SMP
Olof Johansson47dcd352013-07-23 14:51:34 -070038 select HAVE_ARM_TWD if SMP
Arnd Bergmann59d92872013-05-01 00:02:26 +020039 select HAVE_SMP
Arnd Bergmann59d92872013-05-01 00:02:26 +020040 select OMAP_INTERCONNECT
41 select PL310_ERRATA_588369
42 select PL310_ERRATA_727915
43 select PM_OPP if PM
44 select PM_RUNTIME if CPU_IDLE
45 select USB_ARCH_HAS_EHCI if USB_SUPPORT
Arnd Bergmann59d92872013-05-01 00:02:26 +020046 select ARM_ERRATA_754322
47 select ARM_ERRATA_775420
48
49config SOC_OMAP5
50 bool "TI OMAP5"
51 depends on ARCH_MULTI_V7
52 select ARCH_OMAP2PLUS
53 select ARM_CPU_SUSPEND if PM
54 select ARM_GIC
55 select CPU_V7
56 select HAVE_ARM_SCU if SMP
57 select HAVE_ARM_TWD if LOCAL_TIMERS
58 select HAVE_SMP
Arnd Bergmann59d92872013-05-01 00:02:26 +020059 select HAVE_ARM_ARCH_TIMER
Olof Johanssonf82a3132013-07-24 16:55:23 -070060 select ARM_ERRATA_798181 if SMP
Arnd Bergmann59d92872013-05-01 00:02:26 +020061
62config SOC_AM33XX
Ezequiel Garcia10851892013-08-08 18:32:08 -030063 bool "TI AM33XX"
Arnd Bergmann59d92872013-05-01 00:02:26 +020064 depends on ARCH_MULTI_V7
65 select ARCH_OMAP2PLUS
66 select ARM_CPU_SUSPEND if PM
67 select CPU_V7
68 select MULTI_IRQ_HANDLER
Arnd Bergmann59d92872013-05-01 00:02:26 +020069
70config SOC_AM43XX
71 bool "TI AM43x"
72 depends on ARCH_MULTI_V7
73 select CPU_V7
74 select ARCH_OMAP2PLUS
75 select MULTI_IRQ_HANDLER
76 select ARM_GIC
Arnd Bergmann59d92872013-05-01 00:02:26 +020077 select MACH_OMAP_GENERIC
78
Tony Lindgrena0694862013-01-11 11:24:20 -080079config ARCH_OMAP2PLUS
Arnd Bergmann59d92872013-05-01 00:02:26 +020080 bool
81 select ARCH_HAS_BANDGAP
Tony Lindgrena0694862013-01-11 11:24:20 -080082 select ARCH_HAS_CPUFREQ
83 select ARCH_HAS_HOLES_MEMORYMODEL
84 select ARCH_OMAP
85 select ARCH_REQUIRE_GPIOLIB
Tony Lindgrena0694862013-01-11 11:24:20 -080086 select CLKSRC_MMIO
Uwe Kleine-König07d8a492013-10-01 11:08:56 +020087 select COMMON_CLK
Tony Lindgrena0694862013-01-11 11:24:20 -080088 select GENERIC_CLOCKEVENTS
89 select GENERIC_IRQ_CHIP
Tony Lindgrenf2acae62013-09-25 15:44:39 -070090 select MACH_OMAP_GENERIC
Tony Lindgrena0694862013-01-11 11:24:20 -080091 select OMAP_DM_TIMER
92 select PINCTRL
93 select PROC_DEVICETREE if PROC_FS
Ruslan Bilovol6770b212013-02-14 13:55:24 +020094 select SOC_BUS
Tony Lindgrena0694862013-01-11 11:24:20 -080095 select SPARSE_IRQ
Olof Johansson9d8812d2013-07-09 01:31:23 -070096 select TI_PRIV_EDMA
Tony Lindgrena0694862013-01-11 11:24:20 -080097 select USE_OF
98 help
99 Systems based on OMAP2, OMAP3, OMAP4 or OMAP5
100
101
Tony Lindgren4a54db62010-07-05 16:31:47 +0300102if ARCH_OMAP2PLUS
103
104menu "TI OMAP2/3/4 Specific Features"
105
Tony Lindgren8d9166b2010-07-05 16:31:48 +0300106config ARCH_OMAP2PLUS_TYPICAL
107 bool "Typical OMAP configuration"
108 default y
109 select AEABI
Russell Kingb1b3f492012-10-06 17:12:25 +0100110 select HIGHMEM
Tony Lindgren8d9166b2010-07-05 16:31:48 +0300111 select I2C
112 select I2C_OMAP
Tony Lindgren8d9166b2010-07-05 16:31:48 +0300113 select MENELAUS if ARCH_OMAP2
R Sricharan8dd21c92013-02-07 16:21:46 +0530114 select NEON if CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100115 select PM_RUNTIME
116 select REGULATOR
Tony Lindgren8d9166b2010-07-05 16:31:48 +0300117 select TWL4030_CORE if ARCH_OMAP3 || ARCH_OMAP4
118 select TWL4030_POWER if ARCH_OMAP3 || ARCH_OMAP4
Russell Kingb1b3f492012-10-06 17:12:25 +0100119 select VFP
Tony Lindgren8d9166b2010-07-05 16:31:48 +0300120 help
121 Compile a kernel suitable for booting most boards
122
Vaibhav Hiremathecc46cf2012-07-05 08:05:15 -0700123config SOC_HAS_OMAP2_SDRC
124 bool "OMAP2 SDRAM Controller support"
125
Santosh Shilimkarfa6d79d2012-08-13 14:24:24 +0530126config SOC_HAS_REALTIME_COUNTER
127 bool "Real time free running counter"
R Sricharanf18153f2013-02-07 13:25:39 +0530128 depends on SOC_OMAP5 || SOC_DRA7XX
Jon Hunter34cceb72012-11-27 11:22:39 -0600129 default y
Santosh Shilimkarfa6d79d2012-08-13 14:24:24 +0530130
R Sricharan8dd21c92013-02-07 16:21:46 +0530131config SOC_DRA7XX
132 bool "TI DRA7XX"
133 select ARM_ARCH_TIMER
134 select CPU_V7
135 select ARM_GIC
136 select HAVE_SMP
137 select COMMON_CLK
138
Tony Lindgren1dbae812005-11-10 14:26:51 +0000139comment "OMAP Core Type"
Tony Lindgrenf558b272012-03-05 16:02:18 -0800140 depends on ARCH_OMAP2
Tony Lindgren1dbae812005-11-10 14:26:51 +0000141
Tony Lindgren59b479e2011-01-27 16:39:40 -0800142config SOC_OMAP2420
Tony Lindgren1dbae812005-11-10 14:26:51 +0000143 bool "OMAP2420 support"
Tony Lindgrenf558b272012-03-05 16:02:18 -0800144 depends on ARCH_OMAP2
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300145 default y
Timo Teras77900a22006-06-26 16:16:12 -0700146 select OMAP_DM_TIMER
Vaibhav Hiremathecc46cf2012-07-05 08:05:15 -0700147 select SOC_HAS_OMAP2_SDRC
Tony Lindgren1dbae812005-11-10 14:26:51 +0000148
Tony Lindgren59b479e2011-01-27 16:39:40 -0800149config SOC_OMAP2430
Syed Mohammed Khasim72d0f1c2006-12-06 17:14:05 -0800150 bool "OMAP2430 support"
Tony Lindgrenf558b272012-03-05 16:02:18 -0800151 depends on ARCH_OMAP2
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300152 default y
Vaibhav Hiremathecc46cf2012-07-05 08:05:15 -0700153 select SOC_HAS_OMAP2_SDRC
Syed Mohammed Khasim72d0f1c2006-12-06 17:14:05 -0800154
Tony Lindgren59b479e2011-01-27 16:39:40 -0800155config SOC_OMAP3430
Syed Mohammed, Khasimcc26b3b2008-10-09 17:51:41 +0300156 bool "OMAP3430 support"
Tony Lindgrenf558b272012-03-05 16:02:18 -0800157 depends on ARCH_OMAP3
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300158 default y
Vaibhav Hiremathecc46cf2012-07-05 08:05:15 -0700159 select SOC_HAS_OMAP2_SDRC
Syed Mohammed, Khasimcc26b3b2008-10-09 17:51:41 +0300160
Kevin Hilman33959552012-05-10 11:10:07 -0700161config SOC_TI81XX
Hemant Pedanekara9203602011-12-13 10:46:44 -0800162 bool "TI81XX support"
Tony Lindgrenf558b272012-03-05 16:02:18 -0800163 depends on ARCH_OMAP3
Hemant Pedanekar4bd7be22011-02-16 08:31:39 -0800164 default y
165
Tony Lindgrenfc440462010-07-05 16:31:36 +0300166config OMAP_PACKAGE_ZAF
167 bool
168
169config OMAP_PACKAGE_ZAC
170 bool
171
Tony Lindgrenddaa9122009-12-11 16:16:32 -0800172config OMAP_PACKAGE_CBC
173 bool
174
175config OMAP_PACKAGE_CBB
176 bool
177
178config OMAP_PACKAGE_CUS
179 bool
180
Tony Lindgren662c8b52009-12-11 16:16:33 -0800181config OMAP_PACKAGE_CBP
182 bool
183
Tony Lindgrenf2acae62013-09-25 15:44:39 -0700184comment "OMAP Legacy Platform Data Board Type"
Tony Lindgrenf558b272012-03-05 16:02:18 -0800185 depends on ARCH_OMAP2PLUS
Tony Lindgren1dbae812005-11-10 14:26:51 +0000186
187config MACH_OMAP_GENERIC
Tony Lindgrenf2acae62013-09-25 15:44:39 -0700188 bool
Tony Lindgren1dbae812005-11-10 14:26:51 +0000189
Kalle Valo1b52d5d2009-08-28 10:51:37 -0700190config MACH_OMAP2_TUSB6010
191 bool
Tony Lindgren59b479e2011-01-27 16:39:40 -0800192 depends on ARCH_OMAP2 && SOC_OMAP2420
Kalle Valo1b52d5d2009-08-28 10:51:37 -0700193 default y if MACH_NOKIA_N8X0
194
Tony Lindgren1dbae812005-11-10 14:26:51 +0000195config MACH_OMAP_H4
196 bool "OMAP 2420 H4 board"
Tony Lindgren59b479e2011-01-27 16:39:40 -0800197 depends on SOC_OMAP2420
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300198 default y
David Brownellf6049312006-12-06 17:14:03 -0800199 select OMAP_DEBUG_DEVICES
Russell Kingb1b3f492012-10-06 17:12:25 +0100200 select OMAP_PACKAGE_ZAF
Tony Lindgren1dbae812005-11-10 14:26:51 +0000201
Syed Mohammed Khasim72d0f1c2006-12-06 17:14:05 -0800202config MACH_OMAP_2430SDP
203 bool "OMAP 2430 SDP board"
Tony Lindgren59b479e2011-01-27 16:39:40 -0800204 depends on SOC_OMAP2430
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300205 default y
Tony Lindgren369ed782010-07-05 16:31:38 +0300206 select OMAP_PACKAGE_ZAC
Syed Mohammed Khasim72d0f1c2006-12-06 17:14:05 -0800207
Syed Mohammed, Khasim2885f002008-10-09 17:51:42 +0300208config MACH_OMAP3_BEAGLE
209 bool "OMAP3 BEAGLE board"
Tony Lindgrena8eb7ca2010-02-12 12:26:48 -0800210 depends on ARCH_OMAP3
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300211 default y
Tony Lindgrenca5742b2009-12-11 16:16:32 -0800212 select OMAP_PACKAGE_CBB
Syed Mohammed, Khasim2885f002008-10-09 17:51:42 +0300213
Thomas Weber476544c2010-02-17 14:09:28 -0800214config MACH_DEVKIT8000
Thomas Weber51824c52010-03-24 12:52:11 +0000215 bool "DEVKIT8000 board"
216 depends on ARCH_OMAP3
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300217 default y
Thomas Weber51824c52010-03-24 12:52:11 +0000218 select OMAP_PACKAGE_CUS
Thomas Weber476544c2010-02-17 14:09:28 -0800219
Nishant Kamat49265652008-10-10 11:28:23 +0300220config MACH_OMAP_LDP
221 bool "OMAP3 LDP board"
Tony Lindgrena8eb7ca2010-02-12 12:26:48 -0800222 depends on ARCH_OMAP3
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300223 default y
Tony Lindgrenca5742b2009-12-11 16:16:32 -0800224 select OMAP_PACKAGE_CBB
Nishant Kamat49265652008-10-10 11:28:23 +0300225
Tim Nordelld40f3f12010-09-27 16:05:47 +0000226config MACH_OMAP3530_LV_SOM
227 bool "OMAP3 Logic 3530 LV SOM board"
228 depends on ARCH_OMAP3
Tim Nordelld40f3f12010-09-27 16:05:47 +0000229 default y
Russell Kingb1b3f492012-10-06 17:12:25 +0100230 select OMAP_PACKAGE_CBB
Tim Nordelld40f3f12010-09-27 16:05:47 +0000231 help
232 Support for the LogicPD OMAP3530 SOM Development kit
233 for full description please see the products webpage at
234 http://www.logicpd.com/products/development-kits/texas-instruments-zoom%E2%84%A2-omap35x-development-kit
235
236config MACH_OMAP3_TORPEDO
237 bool "OMAP3 Logic 35x Torpedo board"
238 depends on ARCH_OMAP3
Tim Nordelld40f3f12010-09-27 16:05:47 +0000239 default y
Russell Kingb1b3f492012-10-06 17:12:25 +0100240 select OMAP_PACKAGE_CBB
Tim Nordelld40f3f12010-09-27 16:05:47 +0000241 help
242 Support for the LogicPD OMAP35x Torpedo Development kit
243 for full description please see the products webpage at
244 http://www.logicpd.com/products/development-kits/zoom-omap35x-torpedo-development-kit
245
Steve Sakomaneba26452008-10-09 17:51:43 +0300246config MACH_OVERO
247 bool "Gumstix Overo board"
Tony Lindgrena8eb7ca2010-02-12 12:26:48 -0800248 depends on ARCH_OMAP3
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300249 default y
Tony Lindgrenca5742b2009-12-11 16:16:32 -0800250 select OMAP_PACKAGE_CBB
Grazvydas Ignotasda177242008-12-10 17:36:54 -0800251
Ranjith Lohithakshanc6253272009-11-18 18:41:09 -0800252config MACH_OMAP3517EVM
253 bool "OMAP3517/ AM3517 EVM board"
Tony Lindgrena8eb7ca2010-02-12 12:26:48 -0800254 depends on ARCH_OMAP3
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300255 default y
Tony Lindgrenca5742b2009-12-11 16:16:32 -0800256 select OMAP_PACKAGE_CBB
Ranjith Lohithakshanc6253272009-11-18 18:41:09 -0800257
Srinath1cb125c2010-11-16 14:26:58 -0800258config MACH_CRANEBOARD
259 bool "AM3517/05 CRANE board"
260 depends on ARCH_OMAP3
261 select OMAP_PACKAGE_CBB
262
Grazvydas Ignotasda177242008-12-10 17:36:54 -0800263config MACH_OMAP3_PANDORA
264 bool "OMAP3 Pandora"
Tony Lindgrena8eb7ca2010-02-12 12:26:48 -0800265 depends on ARCH_OMAP3
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300266 default y
Tony Lindgrenca5742b2009-12-11 16:16:32 -0800267 select OMAP_PACKAGE_CBB
Felipe Contrerasa075ccc2012-01-20 05:38:31 -0800268 select REGULATOR_FIXED_VOLTAGE if REGULATOR
Syed Mohammed Khasim6fdc29e2009-03-23 18:38:16 -0700269
Radek Pilara17fb8f2012-08-17 18:03:43 +0200270config MACH_TOUCHBOOK
Gregoire Gentil7a079ca2009-12-11 16:16:34 -0800271 bool "OMAP3 Touch Book"
Tony Lindgrena8eb7ca2010-02-12 12:26:48 -0800272 depends on ARCH_OMAP3
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300273 default y
Radek Pilara17fb8f2012-08-17 18:03:43 +0200274 select OMAP_PACKAGE_CBB
Gregoire Gentil7a079ca2009-12-11 16:16:34 -0800275
Syed Mohammed Khasim6fdc29e2009-03-23 18:38:16 -0700276config MACH_OMAP_3430SDP
277 bool "OMAP 3430 SDP board"
Tony Lindgrena8eb7ca2010-02-12 12:26:48 -0800278 depends on ARCH_OMAP3
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300279 default y
Tony Lindgrenca5742b2009-12-11 16:16:32 -0800280 select OMAP_PACKAGE_CBB
Lauri Leukkunenffe7f952009-03-23 18:38:17 -0700281
Tony Lindgrend2fbf342009-10-22 14:48:13 -0700282config MACH_NOKIA_N800
283 bool
284
285config MACH_NOKIA_N810
286 bool
287
288config MACH_NOKIA_N810_WIMAX
289 bool
290
Kalle Valo63138812009-08-28 10:51:38 -0700291config MACH_NOKIA_N8X0
292 bool "Nokia N800/N810"
Tony Lindgren59b479e2011-01-27 16:39:40 -0800293 depends on SOC_OMAP2420
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300294 default y
Tony Lindgrend2fbf342009-10-22 14:48:13 -0700295 select MACH_NOKIA_N800
296 select MACH_NOKIA_N810
297 select MACH_NOKIA_N810_WIMAX
Russell Kingb1b3f492012-10-06 17:12:25 +0100298 select OMAP_PACKAGE_ZAC
Kalle Valo63138812009-08-28 10:51:38 -0700299
Lauri Leukkunenffe7f952009-03-23 18:38:17 -0700300config MACH_NOKIA_RX51
Pavel Machekcc067792012-10-17 23:03:00 +0200301 bool "Nokia N900 (RX-51) phone"
Tony Lindgrena8eb7ca2010-02-12 12:26:48 -0800302 depends on ARCH_OMAP3
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300303 default y
Tony Lindgrenca5742b2009-12-11 16:16:32 -0800304 select OMAP_PACKAGE_CBB
Vikram Pandita577145f2009-05-28 14:04:04 -0700305
Mike Rapoport2886d122009-11-18 18:41:07 -0800306config MACH_CM_T35
Igor Grinbergc3146972011-07-05 03:38:23 -0700307 bool "CompuLab CM-T35/CM-T3730 modules"
Tony Lindgrena8eb7ca2010-02-12 12:26:48 -0800308 depends on ARCH_OMAP3
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300309 default y
Igor Grinbergc3146972011-07-05 03:38:23 -0700310 select MACH_CM_T3730
Tony Lindgrenca5742b2009-12-11 16:16:32 -0800311 select OMAP_PACKAGE_CUS
Mike Rapoport2886d122009-11-18 18:41:07 -0800312
Igor Grinbergd04b6202010-09-21 16:03:09 +0000313config MACH_CM_T3517
314 bool "CompuLab CM-T3517 module"
315 depends on ARCH_OMAP3
316 default y
317 select OMAP_PACKAGE_CBB
Igor Grinbergd04b6202010-09-21 16:03:09 +0000318
Igor Grinbergc3146972011-07-05 03:38:23 -0700319config MACH_CM_T3730
320 bool
321
Jason9cbc3492010-05-17 14:39:09 +0800322config MACH_SBC3530
323 bool "OMAP3 SBC STALKER board"
324 depends on ARCH_OMAP3
Tony Lindgrenffb63e32010-07-05 16:31:47 +0300325 default y
Jason9cbc3492010-05-17 14:39:09 +0800326 select OMAP_PACKAGE_CUS
Jason9cbc3492010-05-17 14:39:09 +0800327
Hemant Pedanekar2c87fb22011-02-15 23:06:08 +0530328config MACH_TI8168EVM
329 bool "TI8168 Evaluation Module"
Kevin Hilman33959552012-05-10 11:10:07 -0700330 depends on SOC_TI81XX
Hemant Pedanekar2c87fb22011-02-15 23:06:08 +0530331 default y
332
Hemant Pedanekara890b672011-12-13 10:48:55 -0800333config MACH_TI8148EVM
334 bool "TI8148 Evaluation Module"
Kevin Hilman33959552012-05-10 11:10:07 -0700335 depends on SOC_TI81XX
Hemant Pedanekara890b672011-12-13 10:48:55 -0800336 default y
337
Alexander Shishkin183bd502009-12-01 14:03:31 +0100338config OMAP3_EMU
339 bool "OMAP3 debugging peripherals"
340 depends on ARCH_OMAP3
Ming Leia8a65652011-11-23 14:44:50 -0800341 select ARM_AMBA
Alexander Shishkin183bd502009-12-01 14:03:31 +0100342 select OC_ETM
343 help
344 Say Y here to enable debugging hardware of omap3
345
Paul Walmsley18862cb2009-12-08 16:33:14 -0700346config OMAP3_SDRC_AC_TIMING
347 bool "Enable SDRC AC timing register changes"
Tony Lindgrena8eb7ca2010-02-12 12:26:48 -0800348 depends on ARCH_OMAP3
Paul Walmsley18862cb2009-12-08 16:33:14 -0700349 default n
350 help
351 If you know that none of your system initiators will attempt to
352 access SDRAM during CORE DVFS, select Y here. This should boost
353 SDRAM performance at lower CORE OPPs. There are relatively few
354 users who will wish to say yes at this point - almost everyone will
355 wish to say no. Selecting yes without understanding what is
356 going on could result in system crashes;
357
Santosh Shilimkar137d1052011-06-25 18:04:31 -0700358config OMAP4_ERRATA_I688
Santosh Shilimkar2ec1fc42012-02-02 19:33:55 +0530359 bool "OMAP4 errata: Async Bridge Corruption"
Santosh Shilimkar1348bbf2013-02-15 18:05:49 +0530360 depends on (ARCH_OMAP4 || SOC_OMAP5) && !ARCH_MULTIPLATFORM
Santosh Shilimkar137d1052011-06-25 18:04:31 -0700361 select ARCH_HAS_BARRIERS
362 help
363 If a data is stalled inside asynchronous bridge because of back
364 pressure, it may be accepted multiple times, creating pointer
365 misalignment that will corrupt next transfers on that data path
366 until next reset of the system (No recovery procedure once the
367 issue is hit, the path remains consistently broken). Async bridge
368 can be found on path between MPU to EMIF and MPU to L3 interconnect.
369 This situation can happen only when the idle is initiated by a
370 Master Request Disconnection (which is trigged by software when
371 executing WFI on CPU).
372 The work-around for this errata needs all the initiators connected
373 through async bridge must ensure that data path is properly drained
374 before issuing WFI. This condition will be met if one Strongly ordered
375 access is performed to the target right before executing the WFI.
376 In MPU case, L3 T2ASYNC FIFO and DDR T2ASYNC FIFO needs to be drained.
377 IO barrier ensure that there is no synchronisation loss on initiators
378 operating on both interconnect port simultaneously.
Tony Lindgren4a54db62010-07-05 16:31:47 +0300379endmenu
380
381endif