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 47*0ee7261cSSantosh Shilimkar select OMAP_INTERCONNECT 4868ac8f7dSTony Lindgren 4968ac8f7dSTony Lindgrenconfig ARCH_OMAP4 50f558b275STony Lindgren bool "TI OMAP4" 51f558b275STony Lindgren default y 52f558b275STony Lindgren depends on ARCH_OMAP2PLUS 53c957445bSDave Martin select CACHE_L2X0 5468ac8f7dSTony Lindgren select CPU_V7 5568ac8f7dSTony Lindgren select ARM_GIC 563b55658aSDave Martin select HAVE_SMP 5707787a85SSantosh Shilimkar select LOCAL_TIMERS if SMP 58455d4d2dSSantosh Shilimkar select PL310_ERRATA_588369 594bdb1577SSantosh Shilimkar select PL310_ERRATA_727915 60455d4d2dSSantosh Shilimkar select ARM_ERRATA_720789 61f5a6422dSNishanth Menon select ARCH_HAS_OPP 62e0246e8eSKevin Hilman select PM_RUNTIME if CPU_IDLE 63f5a6422dSNishanth Menon select PM_OPP if PM 64b2a5124eSTony Lindgren select USB_ARCH_HAS_EHCI if USB_SUPPORT 6515e0d9e3SArnd Bergmann select ARM_CPU_SUSPEND if PM 66dd3ad97cSSantosh Shilimkar select ARCH_NEEDS_CPU_IDLE_COUPLED 67*0ee7261cSSantosh Shilimkar select OMAP_INTERCONNECT 6868ac8f7dSTony Lindgren 6935eb4298SR Sricharanconfig SOC_OMAP5 7035eb4298SR Sricharan bool "TI OMAP5" 7135eb4298SR Sricharan select CPU_V7 7235eb4298SR Sricharan select ARM_GIC 7335eb4298SR Sricharan select HAVE_SMP 7435eb4298SR Sricharan 751dbae815STony Lindgrencomment "OMAP Core Type" 76f558b275STony Lindgren depends on ARCH_OMAP2 771dbae815STony Lindgren 7859b479e0STony Lindgrenconfig SOC_OMAP2420 791dbae815STony Lindgren bool "OMAP2420 support" 80f558b275STony Lindgren depends on ARCH_OMAP2 81ffb63e34STony Lindgren default y 8277900a2fSTimo Teras select OMAP_DM_TIMER 83ecc46cfdSVaibhav Hiremath select SOC_HAS_OMAP2_SDRC 841dbae815STony Lindgren 8559b479e0STony Lindgrenconfig SOC_OMAP2430 8672d0f1c3SSyed Mohammed Khasim bool "OMAP2430 support" 87f558b275STony Lindgren depends on ARCH_OMAP2 88ffb63e34STony Lindgren default y 89ecc46cfdSVaibhav Hiremath select SOC_HAS_OMAP2_SDRC 9072d0f1c3SSyed Mohammed Khasim 9159b479e0STony Lindgrenconfig SOC_OMAP3430 92cc26b3b0SSyed Mohammed, Khasim bool "OMAP3430 support" 93f558b275STony Lindgren depends on ARCH_OMAP3 94ffb63e34STony Lindgren default y 95ecc46cfdSVaibhav Hiremath select SOC_HAS_OMAP2_SDRC 96cc26b3b0SSyed Mohammed, Khasim 9733959553SKevin Hilmanconfig SOC_TI81XX 98a920360fSHemant Pedanekar bool "TI81XX support" 99f558b275STony Lindgren depends on ARCH_OMAP3 1004bd7be22SHemant Pedanekar default y 1014bd7be22SHemant Pedanekar 102bb6abcf4SKevin Hilmanconfig SOC_AM33XX 10399541195SAfzal Mohammed bool "AM33XX support" 10499541195SAfzal Mohammed default y 1051c213ba1SVaibhav Hiremath select CPU_V7 1061c213ba1SVaibhav Hiremath select ARM_CPU_SUSPEND if PM 1071c213ba1SVaibhav Hiremath select MULTI_IRQ_HANDLER 10899541195SAfzal Mohammed 109fc440461STony Lindgrenconfig OMAP_PACKAGE_ZAF 110fc440461STony Lindgren bool 111fc440461STony Lindgren 112fc440461STony Lindgrenconfig OMAP_PACKAGE_ZAC 113fc440461STony Lindgren bool 114fc440461STony Lindgren 115ddaa912aSTony Lindgrenconfig OMAP_PACKAGE_CBC 116ddaa912aSTony Lindgren bool 117ddaa912aSTony Lindgren 118ddaa912aSTony Lindgrenconfig OMAP_PACKAGE_CBB 119ddaa912aSTony Lindgren bool 120ddaa912aSTony Lindgren 121ddaa912aSTony Lindgrenconfig OMAP_PACKAGE_CUS 122ddaa912aSTony Lindgren bool 123ddaa912aSTony Lindgren 124662c8b55STony Lindgrenconfig OMAP_PACKAGE_CBP 125662c8b55STony Lindgren bool 126662c8b55STony Lindgren 127a041a52cSBenoit Coussonconfig OMAP_PACKAGE_CBL 128a041a52cSBenoit Cousson bool 129a041a52cSBenoit Cousson 130a7722d87SBenoit Coussonconfig OMAP_PACKAGE_CBS 131a7722d87SBenoit Cousson bool 132a7722d87SBenoit Cousson 1331dbae815STony Lindgrencomment "OMAP Board Type" 134f558b275STony Lindgren depends on ARCH_OMAP2PLUS 1351dbae815STony Lindgren 1361dbae815STony Lindgrenconfig MACH_OMAP_GENERIC 1378d61649dSBenoit Cousson bool "Generic OMAP2+ board" 138f558b275STony Lindgren depends on ARCH_OMAP2PLUS 139ffb63e34STony Lindgren default y 1408d61649dSBenoit Cousson help 1418d61649dSBenoit Cousson Support for generic TI OMAP2+ boards using Flattened Device Tree. 1428d61649dSBenoit Cousson More information at Documentation/devicetree 1431dbae815STony Lindgren 1441b52d5dfSKalle Valoconfig MACH_OMAP2_TUSB6010 1451b52d5dfSKalle Valo bool 14659b479e0STony Lindgren depends on ARCH_OMAP2 && SOC_OMAP2420 1471b52d5dfSKalle Valo default y if MACH_NOKIA_N8X0 1481b52d5dfSKalle Valo 1491dbae815STony Lindgrenconfig MACH_OMAP_H4 1501dbae815STony Lindgren bool "OMAP 2420 H4 board" 15159b479e0STony Lindgren depends on SOC_OMAP2420 152ffb63e34STony Lindgren default y 15323275d45STony Lindgren select OMAP_PACKAGE_ZAF 154f6049312SDavid Brownell select OMAP_DEBUG_DEVICES 1551dbae815STony Lindgren 1569b6553cdSTony Lindgrenconfig MACH_OMAP_APOLLON 1579b6553cdSTony Lindgren bool "OMAP 2420 Apollon board" 15859b479e0STony Lindgren depends on SOC_OMAP2420 159ffb63e34STony Lindgren default y 160b52b14efSTony Lindgren select OMAP_PACKAGE_ZAC 16172d0f1c3SSyed Mohammed Khasim 16272d0f1c3SSyed Mohammed Khasimconfig MACH_OMAP_2430SDP 16372d0f1c3SSyed Mohammed Khasim bool "OMAP 2430 SDP board" 16459b479e0STony Lindgren depends on SOC_OMAP2430 165ffb63e34STony Lindgren default y 166369ed78fSTony Lindgren select OMAP_PACKAGE_ZAC 16772d0f1c3SSyed Mohammed Khasim 1682885f000SSyed Mohammed, Khasimconfig MACH_OMAP3_BEAGLE 1692885f000SSyed Mohammed, Khasim bool "OMAP3 BEAGLE board" 170a8eb7ca0STony Lindgren depends on ARCH_OMAP3 171ffb63e34STony Lindgren default y 172ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 1732885f000SSyed Mohammed, Khasim 174476544caSThomas Weberconfig MACH_DEVKIT8000 175476544caSThomas Weber bool "DEVKIT8000 board" 176476544caSThomas Weber depends on ARCH_OMAP3 177ffb63e34STony Lindgren default y 17851824c5fSThomas Weber select OMAP_PACKAGE_CUS 179476544caSThomas Weber 18049265651SNishant Kamatconfig MACH_OMAP_LDP 18149265651SNishant Kamat bool "OMAP3 LDP board" 182a8eb7ca0STony Lindgren depends on ARCH_OMAP3 183ffb63e34STony Lindgren default y 184ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 18549265651SNishant Kamat 186d40f3f15STim Nordellconfig MACH_OMAP3530_LV_SOM 187d40f3f15STim Nordell bool "OMAP3 Logic 3530 LV SOM board" 188d40f3f15STim Nordell depends on ARCH_OMAP3 189d40f3f15STim Nordell select OMAP_PACKAGE_CBB 190d40f3f15STim Nordell default y 191d40f3f15STim Nordell help 192d40f3f15STim Nordell Support for the LogicPD OMAP3530 SOM Development kit 193d40f3f15STim Nordell for full description please see the products webpage at 194d40f3f15STim Nordell http://www.logicpd.com/products/development-kits/texas-instruments-zoom%E2%84%A2-omap35x-development-kit 195d40f3f15STim Nordell 196d40f3f15STim Nordellconfig MACH_OMAP3_TORPEDO 197d40f3f15STim Nordell bool "OMAP3 Logic 35x Torpedo board" 198d40f3f15STim Nordell depends on ARCH_OMAP3 199d40f3f15STim Nordell select OMAP_PACKAGE_CBB 200d40f3f15STim Nordell default y 201d40f3f15STim Nordell help 202d40f3f15STim Nordell Support for the LogicPD OMAP35x Torpedo Development kit 203d40f3f15STim Nordell for full description please see the products webpage at 204d40f3f15STim Nordell http://www.logicpd.com/products/development-kits/zoom-omap35x-torpedo-development-kit 205d40f3f15STim Nordell 206eba2645aSSteve Sakomanconfig MACH_OVERO 207eba2645aSSteve Sakoman bool "Gumstix Overo board" 208a8eb7ca0STony Lindgren depends on ARCH_OMAP3 209ffb63e34STony Lindgren default y 210ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 211da177247SGrazvydas Ignotas 21253c5ec31SSyed Mohammed Khasimconfig MACH_OMAP3EVM 21353c5ec31SSyed Mohammed Khasim bool "OMAP 3530 EVM board" 214a8eb7ca0STony Lindgren depends on ARCH_OMAP3 215ffb63e34STony Lindgren default y 216342aa2c1SVaibhav Hiremath select OMAP_PACKAGE_CBB 21753c5ec31SSyed Mohammed Khasim 218c625327eSRanjith Lohithakshanconfig MACH_OMAP3517EVM 219c625327eSRanjith Lohithakshan bool "OMAP3517/ AM3517 EVM board" 220a8eb7ca0STony Lindgren depends on ARCH_OMAP3 221ffb63e34STony Lindgren default y 222ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 223c625327eSRanjith Lohithakshan 2241cb125caSSrinathconfig MACH_CRANEBOARD 2251cb125caSSrinath bool "AM3517/05 CRANE board" 2261cb125caSSrinath depends on ARCH_OMAP3 2271cb125caSSrinath select OMAP_PACKAGE_CBB 2281cb125caSSrinath 229da177247SGrazvydas Ignotasconfig MACH_OMAP3_PANDORA 230da177247SGrazvydas Ignotas bool "OMAP3 Pandora" 231a8eb7ca0STony Lindgren depends on ARCH_OMAP3 232ffb63e34STony Lindgren default y 233ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 234a075ccc6SFelipe Contreras select REGULATOR_FIXED_VOLTAGE if REGULATOR 2356fdc29e2SSyed Mohammed Khasim 2367a079cabSGregoire Gentilconfig MACH_OMAP3_TOUCHBOOK 2377a079cabSGregoire Gentil bool "OMAP3 Touch Book" 238a8eb7ca0STony Lindgren depends on ARCH_OMAP3 239ffb63e34STony Lindgren default y 2407a079cabSGregoire Gentil 2416fdc29e2SSyed Mohammed Khasimconfig MACH_OMAP_3430SDP 2426fdc29e2SSyed Mohammed Khasim bool "OMAP 3430 SDP board" 243a8eb7ca0STony Lindgren depends on ARCH_OMAP3 244ffb63e34STony Lindgren default y 245ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 246ffe7f95bSLauri Leukkunen 247d2fbf345STony Lindgrenconfig MACH_NOKIA_N800 248d2fbf345STony Lindgren bool 249d2fbf345STony Lindgren 250d2fbf345STony Lindgrenconfig MACH_NOKIA_N810 251d2fbf345STony Lindgren bool 252d2fbf345STony Lindgren 253d2fbf345STony Lindgrenconfig MACH_NOKIA_N810_WIMAX 254d2fbf345STony Lindgren bool 255d2fbf345STony Lindgren 25663138812SKalle Valoconfig MACH_NOKIA_N8X0 25763138812SKalle Valo bool "Nokia N800/N810" 25859b479e0STony Lindgren depends on SOC_OMAP2420 259ffb63e34STony Lindgren default y 260bd8f0fc9STony Lindgren select OMAP_PACKAGE_ZAC 261d2fbf345STony Lindgren select MACH_NOKIA_N800 262d2fbf345STony Lindgren select MACH_NOKIA_N810 263d2fbf345STony Lindgren select MACH_NOKIA_N810_WIMAX 26463138812SKalle Valo 2652d200665SAaro Koskinenconfig MACH_NOKIA_RM680 26663fc5f3bSAaro Koskinen bool "Nokia RM-680/696 board" 2672d200665SAaro Koskinen depends on ARCH_OMAP3 2682d200665SAaro Koskinen default y 2692d200665SAaro Koskinen select OMAP_PACKAGE_CBB 27063fc5f3bSAaro Koskinen select MACH_NOKIA_RM696 2712d200665SAaro Koskinen 272ffe7f95bSLauri Leukkunenconfig MACH_NOKIA_RX51 273ffe7f95bSLauri Leukkunen bool "Nokia RX-51 board" 274a8eb7ca0STony Lindgren depends on ARCH_OMAP3 275ffb63e34STony Lindgren default y 276ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 277577145f4SVikram Pandita 278577145f4SVikram Panditaconfig MACH_OMAP_ZOOM2 279577145f4SVikram Pandita bool "OMAP3 Zoom2 board" 280a8eb7ca0STony Lindgren depends on ARCH_OMAP3 281ffb63e34STony Lindgren default y 282ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 28312a75da2SGovindraj.R select SERIAL_8250 28412a75da2SGovindraj.R select SERIAL_CORE_CONSOLE 28512a75da2SGovindraj.R select SERIAL_8250_CONSOLE 286a075ccc6SFelipe Contreras select REGULATOR_FIXED_VOLTAGE if REGULATOR 28746ba0abfSSantosh Shilimkar 2885f35fbe8Svikram panditaconfig MACH_OMAP_ZOOM3 2895f35fbe8Svikram pandita bool "OMAP3630 Zoom3 board" 290a8eb7ca0STony Lindgren depends on ARCH_OMAP3 291ffb63e34STony Lindgren default y 292662c8b55STony Lindgren select OMAP_PACKAGE_CBP 29312a75da2SGovindraj.R select SERIAL_8250 29412a75da2SGovindraj.R select SERIAL_CORE_CONSOLE 29512a75da2SGovindraj.R select SERIAL_8250_CONSOLE 296a075ccc6SFelipe Contreras select REGULATOR_FIXED_VOLTAGE if REGULATOR 2975f35fbe8Svikram pandita 2982886d128SMike Rapoportconfig MACH_CM_T35 299c3146974SIgor Grinberg bool "CompuLab CM-T35/CM-T3730 modules" 300a8eb7ca0STony Lindgren depends on ARCH_OMAP3 301ffb63e34STony Lindgren default y 302c3146974SIgor Grinberg select MACH_CM_T3730 303ca5742bdSTony Lindgren select OMAP_PACKAGE_CUS 3042886d128SMike Rapoport 305d04b620eSIgor Grinbergconfig MACH_CM_T3517 306d04b620eSIgor Grinberg bool "CompuLab CM-T3517 module" 307d04b620eSIgor Grinberg depends on ARCH_OMAP3 308d04b620eSIgor Grinberg default y 309d04b620eSIgor Grinberg select OMAP_PACKAGE_CBB 310d04b620eSIgor Grinberg 311c3146974SIgor Grinbergconfig MACH_CM_T3730 312c3146974SIgor Grinberg bool 313c3146974SIgor Grinberg 31458e11162SEnric Balletbo i Serraconfig MACH_IGEP0020 31528e0f13cSEnric Balletbo i Serra bool "IGEP v2 board" 316a8eb7ca0STony Lindgren depends on ARCH_OMAP3 317ffb63e34STony Lindgren default y 318ca5742bdSTony Lindgren select OMAP_PACKAGE_CBB 31958e11162SEnric Balletbo i Serra 320e844b1daSEnric Balletbo i Serraconfig MACH_IGEP0030 321e844b1daSEnric Balletbo i Serra bool "IGEP OMAP3 module" 322e844b1daSEnric Balletbo i Serra depends on ARCH_OMAP3 323e844b1daSEnric Balletbo i Serra default y 324e844b1daSEnric Balletbo i Serra select OMAP_PACKAGE_CBB 3257be13ad0SMike Rapoport select MACH_IGEP0020 326e844b1daSEnric Balletbo i Serra 3279cbc3493SJasonconfig MACH_SBC3530 3289cbc3493SJason bool "OMAP3 SBC STALKER board" 3299cbc3493SJason depends on ARCH_OMAP3 330ffb63e34STony Lindgren default y 3319cbc3493SJason select OMAP_PACKAGE_CUS 3329cbc3493SJason 33334c9ac23Svikram panditaconfig MACH_OMAP_3630SDP 33434c9ac23Svikram pandita bool "OMAP3630 SDP board" 335a8eb7ca0STony Lindgren depends on ARCH_OMAP3 336ffb63e34STony Lindgren default y 337662c8b55STony Lindgren select OMAP_PACKAGE_CBP 33834c9ac23Svikram pandita 3392c87fb2eSHemant Pedanekarconfig MACH_TI8168EVM 3402c87fb2eSHemant Pedanekar bool "TI8168 Evaluation Module" 34133959553SKevin Hilman depends on SOC_TI81XX 3422c87fb2eSHemant Pedanekar default y 3432c87fb2eSHemant Pedanekar 344a890b676SHemant Pedanekarconfig MACH_TI8148EVM 345a890b676SHemant Pedanekar bool "TI8148 Evaluation Module" 34633959553SKevin Hilman depends on SOC_TI81XX 347a890b676SHemant Pedanekar default y 348a890b676SHemant Pedanekar 34946ba0abfSSantosh Shilimkarconfig MACH_OMAP_4430SDP 35046ba0abfSSantosh Shilimkar bool "OMAP 4430 SDP board" 351ffb63e34STony Lindgren default y 35246ba0abfSSantosh Shilimkar depends on ARCH_OMAP4 353fb6bf632SBenoit Cousson select OMAP_PACKAGE_CBL 3546fea7b0aSBenoit Cousson select OMAP_PACKAGE_CBS 355a075ccc6SFelipe Contreras select REGULATOR_FIXED_VOLTAGE if REGULATOR 356183bd50fSAlexander Shishkin 357b075f58bSDavid Andersconfig MACH_OMAP4_PANDA 358b075f58bSDavid Anders bool "OMAP4 Panda Board" 359b075f58bSDavid Anders default y 360b075f58bSDavid Anders depends on ARCH_OMAP4 361fc63de82Ssricharan select OMAP_PACKAGE_CBL 362fc63de82Ssricharan select OMAP_PACKAGE_CBS 363a075ccc6SFelipe Contreras select REGULATOR_FIXED_VOLTAGE if REGULATOR 364b075f58bSDavid Anders 365183bd50fSAlexander Shishkinconfig OMAP3_EMU 366183bd50fSAlexander Shishkin bool "OMAP3 debugging peripherals" 367183bd50fSAlexander Shishkin depends on ARCH_OMAP3 368a8a6565cSMing Lei select ARM_AMBA 369183bd50fSAlexander Shishkin select OC_ETM 370183bd50fSAlexander Shishkin help 371183bd50fSAlexander Shishkin Say Y here to enable debugging hardware of omap3 372183bd50fSAlexander Shishkin 37318862cbeSPaul Walmsleyconfig OMAP3_SDRC_AC_TIMING 37418862cbeSPaul Walmsley bool "Enable SDRC AC timing register changes" 375a8eb7ca0STony Lindgren depends on ARCH_OMAP3 37618862cbeSPaul Walmsley default n 37718862cbeSPaul Walmsley help 37818862cbeSPaul Walmsley If you know that none of your system initiators will attempt to 37918862cbeSPaul Walmsley access SDRAM during CORE DVFS, select Y here. This should boost 38018862cbeSPaul Walmsley SDRAM performance at lower CORE OPPs. There are relatively few 38118862cbeSPaul Walmsley users who will wish to say yes at this point - almost everyone will 38218862cbeSPaul Walmsley wish to say no. Selecting yes without understanding what is 38318862cbeSPaul Walmsley going on could result in system crashes; 38418862cbeSPaul Walmsley 385137d105dSSantosh Shilimkarconfig OMAP4_ERRATA_I688 3862ec1fc4eSSantosh Shilimkar bool "OMAP4 errata: Async Bridge Corruption" 3872ec1fc4eSSantosh Shilimkar depends on ARCH_OMAP4 388137d105dSSantosh Shilimkar select ARCH_HAS_BARRIERS 389137d105dSSantosh Shilimkar help 390137d105dSSantosh Shilimkar If a data is stalled inside asynchronous bridge because of back 391137d105dSSantosh Shilimkar pressure, it may be accepted multiple times, creating pointer 392137d105dSSantosh Shilimkar misalignment that will corrupt next transfers on that data path 393137d105dSSantosh Shilimkar until next reset of the system (No recovery procedure once the 394137d105dSSantosh Shilimkar issue is hit, the path remains consistently broken). Async bridge 395137d105dSSantosh Shilimkar can be found on path between MPU to EMIF and MPU to L3 interconnect. 396137d105dSSantosh Shilimkar This situation can happen only when the idle is initiated by a 397137d105dSSantosh Shilimkar Master Request Disconnection (which is trigged by software when 398137d105dSSantosh Shilimkar executing WFI on CPU). 399137d105dSSantosh Shilimkar The work-around for this errata needs all the initiators connected 400137d105dSSantosh Shilimkar through async bridge must ensure that data path is properly drained 401137d105dSSantosh Shilimkar before issuing WFI. This condition will be met if one Strongly ordered 402137d105dSSantosh Shilimkar access is performed to the target right before executing the WFI. 403137d105dSSantosh Shilimkar In MPU case, L3 T2ASYNC FIFO and DDR T2ASYNC FIFO needs to be drained. 404137d105dSSantosh Shilimkar IO barrier ensure that there is no synchronisation loss on initiators 405137d105dSSantosh Shilimkar operating on both interconnect port simultaneously. 4064a54db61STony Lindgrenendmenu 4074a54db61STony Lindgren 4084a54db61STony Lindgrenendif 409