14a54db61STony Lindgrenif ARCH_OMAP2PLUS 24a54db61STony Lindgren 34a54db61STony Lindgrenmenu "TI OMAP2/3/4 Specific Features" 44a54db61STony Lindgren 58d9166b5STony Lindgrenconfig ARCH_OMAP2PLUS_TYPICAL 68d9166b5STony Lindgren bool "Typical OMAP configuration" 78d9166b5STony Lindgren default y 88d9166b5STony Lindgren select AEABI 98d9166b5STony Lindgren select REGULATOR 108d9166b5STony Lindgren select PM_RUNTIME 118d9166b5STony Lindgren select VFP 1235eb4298SR Sricharan select NEON if ARCH_OMAP3 || ARCH_OMAP4 || SOC_OMAP5 1312a75da2SGovindraj.R select SERIAL_OMAP 1412a75da2SGovindraj.R select SERIAL_OMAP_CONSOLE 158d9166b5STony Lindgren select I2C 168d9166b5STony Lindgren select I2C_OMAP 178d9166b5STony Lindgren select MENELAUS if ARCH_OMAP2 188d9166b5STony Lindgren select TWL4030_CORE if ARCH_OMAP3 || ARCH_OMAP4 198d9166b5STony Lindgren select TWL4030_POWER if ARCH_OMAP3 || ARCH_OMAP4 20a78a4cbdSSantosh Shilimkar select HIGHMEM 218d9166b5STony Lindgren help 228d9166b5STony Lindgren Compile a kernel suitable for booting most boards 238d9166b5STony Lindgren 24ecc46cfdSVaibhav Hiremathconfig SOC_HAS_OMAP2_SDRC 25ecc46cfdSVaibhav Hiremath bool "OMAP2 SDRAM Controller support" 26ecc46cfdSVaibhav Hiremath 2768ac8f7dSTony Lindgrenconfig ARCH_OMAP2 28f558b275STony Lindgren bool "TI OMAP2" 29f558b275STony Lindgren depends on ARCH_OMAP2PLUS 30f558b275STony Lindgren default y 3168ac8f7dSTony Lindgren select CPU_V6 326b2f55d7SMarc Zyngier select MULTI_IRQ_HANDLER 33ecc46cfdSVaibhav Hiremath select SOC_HAS_OMAP2_SDRC 3468ac8f7dSTony Lindgren 3568ac8f7dSTony Lindgrenconfig ARCH_OMAP3 36f558b275STony Lindgren bool "TI OMAP3" 37f558b275STony Lindgren depends on ARCH_OMAP2PLUS 38f558b275STony Lindgren default y 3968ac8f7dSTony Lindgren select CPU_V7 40b2a5124eSTony Lindgren select USB_ARCH_HAS_EHCI if USB_SUPPORT 41fd1478cdSNishanth Menon select ARCH_HAS_OPP 42e0246e8eSKevin Hilman select PM_RUNTIME if CPU_IDLE 43fd1478cdSNishanth Menon select PM_OPP if PM 4415e0d9e3SArnd Bergmann select ARM_CPU_SUSPEND if PM 4508d33b27SMarc Zyngier select MULTI_IRQ_HANDLER 46ecc46cfdSVaibhav Hiremath select SOC_HAS_OMAP2_SDRC 4768ac8f7dSTony Lindgren 4868ac8f7dSTony Lindgrenconfig ARCH_OMAP4 49f558b275STony Lindgren bool "TI OMAP4" 50f558b275STony Lindgren default y 51f558b275STony Lindgren depends on ARCH_OMAP2PLUS 52c957445bSDave Martin select CACHE_L2X0 5368ac8f7dSTony Lindgren select CPU_V7 5468ac8f7dSTony Lindgren select ARM_GIC 553b55658aSDave Martin select HAVE_SMP 5607787a85SSantosh Shilimkar select LOCAL_TIMERS if SMP 57455d4d2dSSantosh Shilimkar select PL310_ERRATA_588369 584bdb1577SSantosh Shilimkar select PL310_ERRATA_727915 59455d4d2dSSantosh Shilimkar select ARM_ERRATA_720789 60f5a6422dSNishanth Menon select ARCH_HAS_OPP 61e0246e8eSKevin Hilman select PM_RUNTIME if CPU_IDLE 62f5a6422dSNishanth Menon select PM_OPP if PM 63b2a5124eSTony Lindgren select USB_ARCH_HAS_EHCI if USB_SUPPORT 6415e0d9e3SArnd Bergmann select ARM_CPU_SUSPEND if PM 65dd3ad97cSSantosh Shilimkar select ARCH_NEEDS_CPU_IDLE_COUPLED 6668ac8f7dSTony Lindgren 6735eb4298SR Sricharanconfig SOC_OMAP5 6835eb4298SR Sricharan bool "TI OMAP5" 6935eb4298SR Sricharan select CPU_V7 7035eb4298SR Sricharan select ARM_GIC 7135eb4298SR Sricharan select HAVE_SMP 72*acb11fe8SSantosh Shilimkar select ARM_CPU_SUSPEND if PM 7335eb4298SR Sricharan 741dbae815STony Lindgrencomment "OMAP Core Type" 75f558b275STony Lindgren depends on ARCH_OMAP2 761dbae815STony Lindgren 7759b479e0STony Lindgrenconfig SOC_OMAP2420 781dbae815STony Lindgren bool "OMAP2420 support" 79f558b275STony Lindgren depends on ARCH_OMAP2 80ffb63e34STony Lindgren default y 8177900a2fSTimo Teras select OMAP_DM_TIMER 82ecc46cfdSVaibhav Hiremath select SOC_HAS_OMAP2_SDRC 831dbae815STony Lindgren 8459b479e0STony Lindgrenconfig SOC_OMAP2430 8572d0f1c3SSyed Mohammed Khasim bool "OMAP2430 support" 86f558b275STony Lindgren depends on ARCH_OMAP2 87ffb63e34STony Lindgren default y 88ecc46cfdSVaibhav Hiremath select SOC_HAS_OMAP2_SDRC 8972d0f1c3SSyed Mohammed Khasim 9059b479e0STony Lindgrenconfig SOC_OMAP3430 91cc26b3b0SSyed Mohammed, Khasim bool "OMAP3430 support" 92f558b275STony Lindgren depends on ARCH_OMAP3 93ffb63e34STony Lindgren default y 94ecc46cfdSVaibhav Hiremath select SOC_HAS_OMAP2_SDRC 95cc26b3b0SSyed Mohammed, Khasim 9633959553SKevin Hilmanconfig SOC_TI81XX 97a920360fSHemant Pedanekar bool "TI81XX support" 98f558b275STony Lindgren depends on ARCH_OMAP3 994bd7be22SHemant Pedanekar default y 1004bd7be22SHemant Pedanekar 101bb6abcf4SKevin Hilmanconfig SOC_AM33XX 10299541195SAfzal Mohammed bool "AM33XX support" 10399541195SAfzal Mohammed default y 1041c213ba1SVaibhav Hiremath select CPU_V7 1051c213ba1SVaibhav Hiremath select ARM_CPU_SUSPEND if PM 1061c213ba1SVaibhav Hiremath select MULTI_IRQ_HANDLER 10799541195SAfzal Mohammed 108fc440461STony Lindgrenconfig OMAP_PACKAGE_ZAF 109fc440461STony Lindgren bool 110fc440461STony Lindgren 111fc440461STony Lindgrenconfig OMAP_PACKAGE_ZAC 112fc440461STony Lindgren bool 113fc440461STony Lindgren 114ddaa912aSTony Lindgrenconfig OMAP_PACKAGE_CBC 115ddaa912aSTony Lindgren bool 116ddaa912aSTony Lindgren 117ddaa912aSTony Lindgrenconfig OMAP_PACKAGE_CBB 118ddaa912aSTony Lindgren bool 119ddaa912aSTony Lindgren 120ddaa912aSTony Lindgrenconfig OMAP_PACKAGE_CUS 121ddaa912aSTony Lindgren bool 122ddaa912aSTony Lindgren 123662c8b55STony Lindgrenconfig OMAP_PACKAGE_CBP 124662c8b55STony Lindgren bool 125662c8b55STony Lindgren 126a041a52cSBenoit Coussonconfig OMAP_PACKAGE_CBL 127a041a52cSBenoit Cousson bool 128a041a52cSBenoit Cousson 129a7722d87SBenoit Coussonconfig OMAP_PACKAGE_CBS 130a7722d87SBenoit Cousson bool 131a7722d87SBenoit Cousson 1321dbae815STony Lindgrencomment "OMAP Board Type" 133f558b275STony Lindgren depends on ARCH_OMAP2PLUS 1341dbae815STony Lindgren 1351dbae815STony Lindgrenconfig MACH_OMAP_GENERIC 1368d61649dSBenoit Cousson bool "Generic OMAP2+ board" 137f558b275STony Lindgren depends on ARCH_OMAP2PLUS 138ffb63e34STony Lindgren default y 1398d61649dSBenoit Cousson help 1408d61649dSBenoit Cousson Support for generic TI OMAP2+ boards using Flattened Device Tree. 1418d61649dSBenoit Cousson More information at Documentation/devicetree 1421dbae815STony Lindgren 1431b52d5dfSKalle Valoconfig MACH_OMAP2_TUSB6010 1441b52d5dfSKalle Valo bool 14559b479e0STony Lindgren depends on ARCH_OMAP2 && SOC_OMAP2420 1461b52d5dfSKalle Valo default y if MACH_NOKIA_N8X0 1471b52d5dfSKalle Valo 1481dbae815STony Lindgrenconfig MACH_OMAP_H4 1491dbae815STony Lindgren bool "OMAP 2420 H4 board" 15059b479e0STony Lindgren depends on SOC_OMAP2420 151ffb63e34STony Lindgren default y 15223275d45STony Lindgren select OMAP_PACKAGE_ZAF 153f6049312SDavid Brownell select OMAP_DEBUG_DEVICES 1541dbae815STony Lindgren 1559b6553cdSTony Lindgrenconfig MACH_OMAP_APOLLON 1569b6553cdSTony Lindgren bool "OMAP 2420 Apollon board" 15759b479e0STony Lindgren depends on SOC_OMAP2420 158ffb63e34STony Lindgren default y 159b52b14efSTony Lindgren select OMAP_PACKAGE_ZAC 16072d0f1c3SSyed Mohammed Khasim 16172d0f1c3SSyed Mohammed Khasimconfig MACH_OMAP_2430SDP 16272d0f1c3SSyed Mohammed Khasim bool "OMAP 2430 SDP board" 16359b479e0STony Lindgren depends on SOC_OMAP2430 164ffb63e34STony Lindgren default y 165369ed78fSTony Lindgren select OMAP_PACKAGE_ZAC 16672d0f1c3SSyed Mohammed Khasim 1672885f000SSyed Mohammed, Khasimconfig MACH_OMAP3_BEAGLE 1682885f000SSyed Mohammed, Khasim bool "OMAP3 BEAGLE board" 169a8eb7ca0STony Lindgren depends on ARCH_OMAP3 170ffb63e34STony Lindgren default y 171ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 1722885f000SSyed Mohammed, Khasim 173476544caSThomas Weberconfig MACH_DEVKIT8000 174476544caSThomas Weber bool "DEVKIT8000 board" 175476544caSThomas Weber depends on ARCH_OMAP3 176ffb63e34STony Lindgren default y 17751824c5fSThomas Weber select OMAP_PACKAGE_CUS 178476544caSThomas Weber 17949265651SNishant Kamatconfig MACH_OMAP_LDP 18049265651SNishant Kamat bool "OMAP3 LDP board" 181a8eb7ca0STony Lindgren depends on ARCH_OMAP3 182ffb63e34STony Lindgren default y 183ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 18449265651SNishant Kamat 185d40f3f15STim Nordellconfig MACH_OMAP3530_LV_SOM 186d40f3f15STim Nordell bool "OMAP3 Logic 3530 LV SOM board" 187d40f3f15STim Nordell depends on ARCH_OMAP3 188d40f3f15STim Nordell select OMAP_PACKAGE_CBB 189d40f3f15STim Nordell default y 190d40f3f15STim Nordell help 191d40f3f15STim Nordell Support for the LogicPD OMAP3530 SOM Development kit 192d40f3f15STim Nordell for full description please see the products webpage at 193d40f3f15STim Nordell http://www.logicpd.com/products/development-kits/texas-instruments-zoom%E2%84%A2-omap35x-development-kit 194d40f3f15STim Nordell 195d40f3f15STim Nordellconfig MACH_OMAP3_TORPEDO 196d40f3f15STim Nordell bool "OMAP3 Logic 35x Torpedo board" 197d40f3f15STim Nordell depends on ARCH_OMAP3 198d40f3f15STim Nordell select OMAP_PACKAGE_CBB 199d40f3f15STim Nordell default y 200d40f3f15STim Nordell help 201d40f3f15STim Nordell Support for the LogicPD OMAP35x Torpedo Development kit 202d40f3f15STim Nordell for full description please see the products webpage at 203d40f3f15STim Nordell http://www.logicpd.com/products/development-kits/zoom-omap35x-torpedo-development-kit 204d40f3f15STim Nordell 205eba2645aSSteve Sakomanconfig MACH_OVERO 206eba2645aSSteve Sakoman bool "Gumstix Overo board" 207a8eb7ca0STony Lindgren depends on ARCH_OMAP3 208ffb63e34STony Lindgren default y 209ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 210da177247SGrazvydas Ignotas 21153c5ec31SSyed Mohammed Khasimconfig MACH_OMAP3EVM 21253c5ec31SSyed Mohammed Khasim bool "OMAP 3530 EVM board" 213a8eb7ca0STony Lindgren depends on ARCH_OMAP3 214ffb63e34STony Lindgren default y 215342aa2c1SVaibhav Hiremath select OMAP_PACKAGE_CBB 21653c5ec31SSyed Mohammed Khasim 217c625327eSRanjith Lohithakshanconfig MACH_OMAP3517EVM 218c625327eSRanjith Lohithakshan bool "OMAP3517/ AM3517 EVM board" 219a8eb7ca0STony Lindgren depends on ARCH_OMAP3 220ffb63e34STony Lindgren default y 221ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 222c625327eSRanjith Lohithakshan 2231cb125caSSrinathconfig MACH_CRANEBOARD 2241cb125caSSrinath bool "AM3517/05 CRANE board" 2251cb125caSSrinath depends on ARCH_OMAP3 2261cb125caSSrinath select OMAP_PACKAGE_CBB 2271cb125caSSrinath 228da177247SGrazvydas Ignotasconfig MACH_OMAP3_PANDORA 229da177247SGrazvydas Ignotas bool "OMAP3 Pandora" 230a8eb7ca0STony Lindgren depends on ARCH_OMAP3 231ffb63e34STony Lindgren default y 232ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 233a075ccc6SFelipe Contreras select REGULATOR_FIXED_VOLTAGE if REGULATOR 2346fdc29e2SSyed Mohammed Khasim 2357a079cabSGregoire Gentilconfig MACH_OMAP3_TOUCHBOOK 2367a079cabSGregoire Gentil bool "OMAP3 Touch Book" 237a8eb7ca0STony Lindgren depends on ARCH_OMAP3 238ffb63e34STony Lindgren default y 2397a079cabSGregoire Gentil 2406fdc29e2SSyed Mohammed Khasimconfig MACH_OMAP_3430SDP 2416fdc29e2SSyed Mohammed Khasim bool "OMAP 3430 SDP board" 242a8eb7ca0STony Lindgren depends on ARCH_OMAP3 243ffb63e34STony Lindgren default y 244ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 245ffe7f95bSLauri Leukkunen 246d2fbf345STony Lindgrenconfig MACH_NOKIA_N800 247d2fbf345STony Lindgren bool 248d2fbf345STony Lindgren 249d2fbf345STony Lindgrenconfig MACH_NOKIA_N810 250d2fbf345STony Lindgren bool 251d2fbf345STony Lindgren 252d2fbf345STony Lindgrenconfig MACH_NOKIA_N810_WIMAX 253d2fbf345STony Lindgren bool 254d2fbf345STony Lindgren 25563138812SKalle Valoconfig MACH_NOKIA_N8X0 25663138812SKalle Valo bool "Nokia N800/N810" 25759b479e0STony Lindgren depends on SOC_OMAP2420 258ffb63e34STony Lindgren default y 259bd8f0fc9STony Lindgren select OMAP_PACKAGE_ZAC 260d2fbf345STony Lindgren select MACH_NOKIA_N800 261d2fbf345STony Lindgren select MACH_NOKIA_N810 262d2fbf345STony Lindgren select MACH_NOKIA_N810_WIMAX 26363138812SKalle Valo 2642d200665SAaro Koskinenconfig MACH_NOKIA_RM680 26563fc5f3bSAaro Koskinen bool "Nokia RM-680/696 board" 2662d200665SAaro Koskinen depends on ARCH_OMAP3 2672d200665SAaro Koskinen default y 2682d200665SAaro Koskinen select OMAP_PACKAGE_CBB 26963fc5f3bSAaro Koskinen select MACH_NOKIA_RM696 2702d200665SAaro Koskinen 271ffe7f95bSLauri Leukkunenconfig MACH_NOKIA_RX51 272ffe7f95bSLauri Leukkunen bool "Nokia RX-51 board" 273a8eb7ca0STony Lindgren depends on ARCH_OMAP3 274ffb63e34STony Lindgren default y 275ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 276577145f4SVikram Pandita 277577145f4SVikram Panditaconfig MACH_OMAP_ZOOM2 278577145f4SVikram Pandita bool "OMAP3 Zoom2 board" 279a8eb7ca0STony Lindgren depends on ARCH_OMAP3 280ffb63e34STony Lindgren default y 281ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 28212a75da2SGovindraj.R select SERIAL_8250 28312a75da2SGovindraj.R select SERIAL_CORE_CONSOLE 28412a75da2SGovindraj.R select SERIAL_8250_CONSOLE 285a075ccc6SFelipe Contreras select REGULATOR_FIXED_VOLTAGE if REGULATOR 28646ba0abfSSantosh Shilimkar 2875f35fbe8Svikram panditaconfig MACH_OMAP_ZOOM3 2885f35fbe8Svikram pandita bool "OMAP3630 Zoom3 board" 289a8eb7ca0STony Lindgren depends on ARCH_OMAP3 290ffb63e34STony Lindgren default y 291662c8b55STony Lindgren select OMAP_PACKAGE_CBP 29212a75da2SGovindraj.R select SERIAL_8250 29312a75da2SGovindraj.R select SERIAL_CORE_CONSOLE 29412a75da2SGovindraj.R select SERIAL_8250_CONSOLE 295a075ccc6SFelipe Contreras select REGULATOR_FIXED_VOLTAGE if REGULATOR 2965f35fbe8Svikram pandita 2972886d128SMike Rapoportconfig MACH_CM_T35 298c3146974SIgor Grinberg bool "CompuLab CM-T35/CM-T3730 modules" 299a8eb7ca0STony Lindgren depends on ARCH_OMAP3 300ffb63e34STony Lindgren default y 301c3146974SIgor Grinberg select MACH_CM_T3730 302ca5742bdSTony Lindgren select OMAP_PACKAGE_CUS 3032886d128SMike Rapoport 304d04b620eSIgor Grinbergconfig MACH_CM_T3517 305d04b620eSIgor Grinberg bool "CompuLab CM-T3517 module" 306d04b620eSIgor Grinberg depends on ARCH_OMAP3 307d04b620eSIgor Grinberg default y 308d04b620eSIgor Grinberg select OMAP_PACKAGE_CBB 309d04b620eSIgor Grinberg 310c3146974SIgor Grinbergconfig MACH_CM_T3730 311c3146974SIgor Grinberg bool 312c3146974SIgor Grinberg 31358e11162SEnric Balletbo i Serraconfig MACH_IGEP0020 31428e0f13cSEnric Balletbo i Serra bool "IGEP v2 board" 315a8eb7ca0STony Lindgren depends on ARCH_OMAP3 316ffb63e34STony Lindgren default y 317ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 31858e11162SEnric Balletbo i Serra 319e844b1daSEnric Balletbo i Serraconfig MACH_IGEP0030 320e844b1daSEnric Balletbo i Serra bool "IGEP OMAP3 module" 321e844b1daSEnric Balletbo i Serra depends on ARCH_OMAP3 322e844b1daSEnric Balletbo i Serra default y 323e844b1daSEnric Balletbo i Serra select OMAP_PACKAGE_CBB 3247be13ad0SMike Rapoport select MACH_IGEP0020 325e844b1daSEnric Balletbo i Serra 3269cbc3493SJasonconfig MACH_SBC3530 3279cbc3493SJason bool "OMAP3 SBC STALKER board" 3289cbc3493SJason depends on ARCH_OMAP3 329ffb63e34STony Lindgren default y 3309cbc3493SJason select OMAP_PACKAGE_CUS 3319cbc3493SJason 33234c9ac23Svikram panditaconfig MACH_OMAP_3630SDP 33334c9ac23Svikram pandita bool "OMAP3630 SDP board" 334a8eb7ca0STony Lindgren depends on ARCH_OMAP3 335ffb63e34STony Lindgren default y 336662c8b55STony Lindgren select OMAP_PACKAGE_CBP 33734c9ac23Svikram pandita 3382c87fb2eSHemant Pedanekarconfig MACH_TI8168EVM 3392c87fb2eSHemant Pedanekar bool "TI8168 Evaluation Module" 34033959553SKevin Hilman depends on SOC_TI81XX 3412c87fb2eSHemant Pedanekar default y 3422c87fb2eSHemant Pedanekar 343a890b676SHemant Pedanekarconfig MACH_TI8148EVM 344a890b676SHemant Pedanekar bool "TI8148 Evaluation Module" 34533959553SKevin Hilman depends on SOC_TI81XX 346a890b676SHemant Pedanekar default y 347a890b676SHemant Pedanekar 34846ba0abfSSantosh Shilimkarconfig MACH_OMAP_4430SDP 34946ba0abfSSantosh Shilimkar bool "OMAP 4430 SDP board" 350ffb63e34STony Lindgren default y 35146ba0abfSSantosh Shilimkar depends on ARCH_OMAP4 352fb6bf632SBenoit Cousson select OMAP_PACKAGE_CBL 3536fea7b0aSBenoit Cousson select OMAP_PACKAGE_CBS 354a075ccc6SFelipe Contreras select REGULATOR_FIXED_VOLTAGE if REGULATOR 355183bd50fSAlexander Shishkin 356b075f58bSDavid Andersconfig MACH_OMAP4_PANDA 357b075f58bSDavid Anders bool "OMAP4 Panda Board" 358b075f58bSDavid Anders default y 359b075f58bSDavid Anders depends on ARCH_OMAP4 360fc63de82Ssricharan select OMAP_PACKAGE_CBL 361fc63de82Ssricharan select OMAP_PACKAGE_CBS 362a075ccc6SFelipe Contreras select REGULATOR_FIXED_VOLTAGE if REGULATOR 363b075f58bSDavid Anders 364183bd50fSAlexander Shishkinconfig OMAP3_EMU 365183bd50fSAlexander Shishkin bool "OMAP3 debugging peripherals" 366183bd50fSAlexander Shishkin depends on ARCH_OMAP3 367a8a6565cSMing Lei select ARM_AMBA 368183bd50fSAlexander Shishkin select OC_ETM 369183bd50fSAlexander Shishkin help 370183bd50fSAlexander Shishkin Say Y here to enable debugging hardware of omap3 371183bd50fSAlexander Shishkin 37218862cbeSPaul Walmsleyconfig OMAP3_SDRC_AC_TIMING 37318862cbeSPaul Walmsley bool "Enable SDRC AC timing register changes" 374a8eb7ca0STony Lindgren depends on ARCH_OMAP3 37518862cbeSPaul Walmsley default n 37618862cbeSPaul Walmsley help 37718862cbeSPaul Walmsley If you know that none of your system initiators will attempt to 37818862cbeSPaul Walmsley access SDRAM during CORE DVFS, select Y here. This should boost 37918862cbeSPaul Walmsley SDRAM performance at lower CORE OPPs. There are relatively few 38018862cbeSPaul Walmsley users who will wish to say yes at this point - almost everyone will 38118862cbeSPaul Walmsley wish to say no. Selecting yes without understanding what is 38218862cbeSPaul Walmsley going on could result in system crashes; 38318862cbeSPaul Walmsley 384137d105dSSantosh Shilimkarconfig OMAP4_ERRATA_I688 3852ec1fc4eSSantosh Shilimkar bool "OMAP4 errata: Async Bridge Corruption" 3862ec1fc4eSSantosh Shilimkar depends on ARCH_OMAP4 387137d105dSSantosh Shilimkar select ARCH_HAS_BARRIERS 388137d105dSSantosh Shilimkar help 389137d105dSSantosh Shilimkar If a data is stalled inside asynchronous bridge because of back 390137d105dSSantosh Shilimkar pressure, it may be accepted multiple times, creating pointer 391137d105dSSantosh Shilimkar misalignment that will corrupt next transfers on that data path 392137d105dSSantosh Shilimkar until next reset of the system (No recovery procedure once the 393137d105dSSantosh Shilimkar issue is hit, the path remains consistently broken). Async bridge 394137d105dSSantosh Shilimkar can be found on path between MPU to EMIF and MPU to L3 interconnect. 395137d105dSSantosh Shilimkar This situation can happen only when the idle is initiated by a 396137d105dSSantosh Shilimkar Master Request Disconnection (which is trigged by software when 397137d105dSSantosh Shilimkar executing WFI on CPU). 398137d105dSSantosh Shilimkar The work-around for this errata needs all the initiators connected 399137d105dSSantosh Shilimkar through async bridge must ensure that data path is properly drained 400137d105dSSantosh Shilimkar before issuing WFI. This condition will be met if one Strongly ordered 401137d105dSSantosh Shilimkar access is performed to the target right before executing the WFI. 402137d105dSSantosh Shilimkar In MPU case, L3 T2ASYNC FIFO and DDR T2ASYNC FIFO needs to be drained. 403137d105dSSantosh Shilimkar IO barrier ensure that there is no synchronisation loss on initiators 404137d105dSSantosh Shilimkar operating on both interconnect port simultaneously. 4054a54db61STony Lindgrenendmenu 4064a54db61STony Lindgren 4074a54db61STony Lindgrenendif 408