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	 > 嵌入式系統(tǒng) > 設(shè)計(jì)應(yīng)用 > AM335x(TQ335x)學(xué)習(xí)筆記——USB驅(qū)動(dòng)移植
      
    
      

      

      


	
	
	

      
	
      
		
      
			
      AM335x(TQ335x)學(xué)習(xí)筆記——USB驅(qū)動(dòng)移植
      
						
      
				作者：
				時(shí)間：2016-11-28
				來(lái)源：網(wǎng)絡(luò)
				
				
				
				
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			對(duì)于AM335x來(lái)講，TI維護(hù)的USB驅(qū)動(dòng)已經(jīng)非常完善了，本文稱之為移植，實(shí)際上僅僅是配置內(nèi)核選項(xiàng)使能USB HOST/OTG功能。廢話少說(shuō)，直接動(dòng)手開啟AM335x的USB驅(qū)動(dòng)配置項(xiàng)。
      Step1. 配置內(nèi)核支持USB
      本文引用地址：http://www.biyoush.com/article/201611/322825.htm
      默認(rèn)的配置項(xiàng)沒有配置USB相關(guān)的選項(xiàng)，但是DTS已經(jīng)配置好了，我們不需要對(duì)DTS作任何修改，詳細(xì)的內(nèi)核配置項(xiàng)如下：
      1. DeviceDrivers--->
      2. [*]USBsupport--->
      3. [*]OTGsupport
      4. <*>EHCIHCD(USB2.0)support
      5. [*]ImprovedTransactionTranslatorscheduling(NEW)
      6. <*>EHCIsupportforOMAP3andlaterchips(NEW)
      7. <*>OHCIHCD(USB1.1)support
      8. <*>OHCIsupportforOMAP3andlaterchips(NEW)
      9. <*>InventraHighspeedDualRoleController(TI,ADI,...)
      10. MUSBModeSelection(DualRolemode)--->
      11. <*>PlatformGlueLayer(TIDSPSplatforms)--->
      12. MUSBDMAmode(DisableDMA(alwaysusePIO))--->
      Step2. 編譯內(nèi)核
      編譯內(nèi)核的指令如下：
      1. makeARCH=armCROSS_COMPILE=arm-linux-gnueabi--j8
      Step3.測(cè)試
      用新編譯好的內(nèi)核啟動(dòng)開發(fā)板，可以看到如下Log：
      1. Startingkernel...
      4. [0.000000]BootingLinuxonphysicalCPU0x0
      5. [0.000000]Linuxversion3.17.2(lilianrong@smarter)(gccversion4.7.3(Ubuntu/Linaro4.7.3-12ubuntu1))#96SMPFriDec2622:28:21CST2014
      6. [0.000000]CPU:ARMv7Processor[413fc082]revision2(ARMv7),cr=10c5387d
      7. [0.000000]CPU:PIPT/VIPTnonaliasingdatacache,VIPTaliasinginstructioncache
      8. [0.000000]Machinemodel:TIAM335xEVM
      9. [0.000000]cma:Reserved16MiBat9e800000
      10. [0.000000]Memorypolicy:Datacachewriteback
      11. [0.000000]HighMemzone:1048574pagesexceedsfreesize0
      12. [0.000000]CPU:AllCPU(s)startedinSVCmode.
      13. [0.000000]AM335XES2.1(sgxneon)
      14. [0.000000]PERCPU:Embedded9pages/cpu@dfa99000s14336r8192d14336u36864
      15. [0.000000]Built1zonelistsinZoneorder,mobilitygroupingon.Totalpages:129792
      16. [0.000000]Kernelcommandline:console=ttyO0,115200n8root=/dev/mmcblk0p2rwrootfstype=ext3rootwait
      17. [0.000000]PIDhashtableentries:2048(order:1,8192bytes)
      18. [0.000000]Dentrycachehashtableentries:65536(order:6,262144bytes)
      19. [0.000000]Inode-cachehashtableentries:32768(order:5,131072bytes)
      20. [0.000000]Memory:483980K/523264Kavailable(6184Kkernelcode,668Krwdata,2468Krodata,410Kinit,8215Kbss,39284Kreserved,0Khighmem)
      21. [0.000000]Virtualkernelmemorylayout:
      22. [0.000000]vector:0xffff0000-0xffff1000(4kB)
      23. [0.000000]fixmap:0xffc00000-0xffe00000(2048kB)
      24. [0.000000]vmalloc:0xe0800000-0xff000000(488MB)
      25. [0.000000]lowmem:0xc0000000-0xe0000000(512MB)
      26. [0.000000]pkmap:0xbfe00000-0xc0000000(2MB)
      27. [0.000000]modules:0xbf000000-0xbfe00000(14MB)
      28. [0.000000].text:0xc0008000-0xc087b564(8654kB)
      29. [0.000000].init:0xc087c000-0xc08e2800(410kB)
      30. [0.000000].data:0xc08e4000-0xc098b330(669kB)
      31. [0.000000].bss:0xc098b330-0xc1190f60(8216kB)
      32. [0.000000]HierarchicalRCUimplementation.
      33. [0.000000]RCUrestrictingCPUsfromNR_CPUS=2tonr_cpu_ids=1.
      34. [0.000000]RCU:Adjustinggeometryforrcu_fanout_leaf=16,nr_cpu_ids=1
      35. [0.000000]NR_IRQS:16nr_irqs:1616
      36. [0.000000]IRQ:FoundanINTCat0xfa200000(revision5.0)with128interrupts
      37. [0.000000]Totalof128interruptson1activecontroller
      38. [0.000000]OMAPclockeventsource:timer2at24000000Hz
      39. [0.000014]sched_clock:32bitsat24MHz,resolution41ns,wrapsevery178956969942ns
      40. [0.000064]OMAPclocksource:timer1at24000000Hz
      41. [0.000795]Console:colourdummydevice80x30
      42. [0.000845]Lockdependencyvalidator:Copyright(c)2006RedHat,Inc.,IngoMolnar
      43. [0.000853]...MAX_LOCKDEP_SUBCLASSES:8
      44. [0.000861]...MAX_LOCK_DEPTH:48
      45. [0.000869]...MAX_LOCKDEP_KEYS:8191
      46. [0.000876]...CLASSHASH_SIZE:4096
      47. [0.000884]...MAX_LOCKDEP_ENTRIES:32768
      48. [0.000890]...MAX_LOCKDEP_CHAINS:65536
      49. [0.000898]...CHAINHASH_SIZE:32768
      50. [0.000905]memoryusedbylockdependencyinfo:5167kB
      51. [0.000913]pertask-structmemoryfootprint:1152bytes
      52. [0.000956]Calibratingdelayloop...996.14BogoMIPS(lpj=4980736)
      53. [0.079037]pid_max:default:32768minimum:301
      54. [0.079443]SecurityFrameworkinitialized
      55. [0.079567]Mount-cachehashtableentries:1024(order:0,4096bytes)
      56. [0.079580]Mountpoint-cachehashtableentries:1024(order:0,4096bytes)
      57. [0.081764]CPU:Testingwritebuffercoherency:ok
      58. [0.082949]CPU0:thread-1,cpu0,socket-1,mpidr0
      59. [0.083077]Settingupstaticidentitymapfor0x805dbb70-0x805dbbe0
      60. [0.086307]Broughtup1CPUs
      61. [0.086326]SMP:Totalof1processorsactivated.
      62. [0.086336]CPU:AllCPU(s)startedinSVCmode.
      63. [0.088948]devtmpfs:initialized
      64. [0.097822]VFPsupportv0.3:implementor41architecture3part30variantcrev3
      65. [0.133146]omap_hwmod:tptc0usingbrokendtdatafromedma
      66. [0.133495]omap_hwmod:tptc1usingbrokendtdatafromedma
      67. [0.133823]omap_hwmod:tptc2usingbrokendtdatafromedma
      68. [0.141643]omap_hwmod:debugss:_wait_target_disablefailed
      69. [0.199665]pinctrlcore:initializedpinctrlsubsystem
      70. [0.202194]regulator-dummy:noparameters
      71. [0.232293]NET:Registeredprotocolfamily16
      72. [0.240857]DMA:preallocated256KiBpoolforatomiccoherentallocations
      73. [0.243121]cpuidle:usinggovernorladder
      74. [0.243149]cpuidle:usinggovernormenu
      75. [0.255109]OMAPGPIOhardwareversion0.1
      76. [0.270370]omap-gpmc50000000.gpmc:couldnotfindpctldevfornode/pinmux@44e10800/nandflash_pins_s0,deferringprobe
      77. [0.270413]platform50000000.gpmc:Driveromap-gpmcrequestsprobedeferral
      78. [0.274914]hw-breakpoint:debugarchitecture0x4unsupported.
      79. [0.320324]edma-dma-engineedma-dma-engine.0:TIEDMADMAenginedriver
      80. [0.321686]vbat:5000mV
      81. [0.322450]lis3_reg:noparameters
      82. [0.325863]SCSIsubsysteminitialized
      83. [0.326622]usbcore:registerednewinterfacedriverusbfs
      84. [0.326782]usbcore:registerednewinterfacedriverhub
      85. [0.330704]usbcore:registerednewdevicedriverusb
      86. [0.331558]omap_i2c44e0b000.i2c:couldnotfindpctldevfornode/pinmux@44e10800/pinmux_i2c0_pins,deferringprobe
      87. [0.331597]platform44e0b000.i2c:Driveromap_i2crequestsprobedeferral
      88. [0.331654]omap_i2c4802a000.i2c:couldnotfindpctldevfornode/pinmux@44e10800/pinmux_i2c1_pins,deferringprobe
      89. [0.331677]platform4802a000.i2c:Driveromap_i2crequestsprobedeferral
      90. [0.332863]AdvancedLinuxSoundArchitectureDriverInitialized.
      91. [0.336272]Switchedtoclocksourcetimer1
      92. [0.489380]NET:Registeredprotocolfamily2
      93. [0.491239]TCPestablishedhashtableentries:4096(order:2,16384bytes)
      94. [0.491422]TCPbindhashtableentries:4096(order:5,147456bytes)
      95. [0.492785]TCP:Hashtablesconfigured(established4096bind4096)
      96. [0.492955]TCP:renoregistered
      97. [0.492981]UDPhashtableentries:256(order:2,20480bytes)
      98. [0.493170]UDP-Litehashtableentries:256(order:2,20480bytes)
      99. [0.494207]NET:Registeredprotocolfamily1
      100. [0.496281]RPC:RegisterednamedUNIXsockettransportmodule.
      101. [0.496304]RPC:Registeredudptransportmodule.
      102. [0.496314]RPC:Registeredtcptransportmodule.
      103. [0.496323]RPC:RegisteredtcpNFSv4.1backchanneltransportmodule.
      104. [0.498147]hwperfevents:enabledwitharmv7_cortex_a8PMUdriver,5countersavailable
      105. [0.502301]futexhashtableentries:256(order:2,16384bytes)
      106. [0.507875]VFS:Diskquotasdquot_6.5.2
      107. [0.508024]Dquot-cachehashtableentries:1024(order0,4096bytes)
      108. [0.510137]NFS:Registeringtheid_resolverkeytype
      109. [0.510482]Keytypeid_resolverregistered
      110. [0.510497]Keytypeid_legacyregistered
      111. [0.510654]jffs2:version2.2.(NAND)(SUMMARY)漏2001-2006RedHat,Inc.
      112. [0.511074]msgmnihasbeensetto977
      113. [0.516250]ioschedulernoopregistered
      114. [0.516287]ioschedulerdeadlineregistered
      115. [0.516358]ioschedulercfqregistered(default)
      116. [0.518591]pinctrl-single44e10800.pinmux:142pinsatpaf9e10800size568
      117. [0.523698]backlightsupplypowernotfound,usingdummyregulator
      118. [0.527040]Serial:8250/16550driver,4ports,IRQsharingenabled
      119. [0.533191]omap_uart44e09000.serial:nowakeirqforuart0
      120. [0.533803]44e09000.serial:ttyO0atMMIO0x44e09000(irq=88,base_baud=3000000)isaOMAPUART0
      121. [1.234091]console[ttyO0]enabled
      122. [1.243201]omap_rng48310000.rng:OMAPRandomNumberGeneratorver.20
      123. [1.250887][drm]Initializeddrm1.1.020060810
      124. [1.264563][drm]SupportsvblanktimestampcachingRev2(21.10.2013).
      125. [1.271671][drm]Nodriversupportforvblanktimestampquery.
      126. [1.331494]Console:switchingtocolourframebufferdevice100x30
      127. [1.342552]tilcdc4830e000.lcdc:fb0:framebufferdevice
      128. [1.348442]tilcdc4830e000.lcdc:registeredpanicnotifier
      129. [1.354341][drm]Initializedtilcdc1.0.020121205onminor0
      130. [1.390556]brd:moduleloaded
      131. [1.408704]loop:moduleloaded
      132. [1.414966]mtdoops:mtddevice(mtddev=name/number)mustbesupplied
      133. [1.425658]usbcore:registerednewinterfacedriverasix
      134. [1.431555]usbcore:registerednewinterfacedriverax88179_178a
      135. [1.438078]usbcore:registerednewinterfacedrivercdc_ether
      136. [1.444343]usbcore:registerednewinterfacedriversmsc95xx
      137. [1.450493]usbcore:registerednewinterfacedrivernet1080
      138. [1.456543]usbcore:registerednewinterfacedrivercdc_subset
      139. [1.462850]usbcore:registerednewinterfacedriverzaurus
      140. [1.468911]usbcore:registerednewinterfacedrivercdc_ncm
      141. [1.475931]ehci_hcd:USB2.0EnhancedHostController(EHCI)Driver
      142. [1.482939]ehci-omap:OMAP-EHCIHostControllerdriver
      143. [1.488833]ohci_hcd:USB1.1OpenHostController(OHCI)Driver
      144. [1.495347]ohci-omap3:OHCIOMAP3driver
      145. [1.500021]usbcore:registerednewinterfacedrivercdc_wdm
      146. [1.506178]usbcore:registerednewinterfacedriverusb-storage
      147. [1.512631]usbcore:registerednewinterfacedriverusbtest
      148. [1.521522]47401300.usb-physupplyvccnotfound,usingdummyregulator
      149. [1.533165]musb-hdrcmusb-hdrc.0.auto:MUSBHDRChostdriver
      150. [1.543455]musb-hdrcmusb-hdrc.0.auto:newUSBbusregistered,assignedbusnumber1
      151. [1.562104]usbusb1:NewUSBdevicefound,idVendor=1d6b,idProduct=0002
      152. [1.569359]usbusb1:NewUSBdevicestrings:Mfr=3,Product=2,SerialNumber=1
      153. [1.576955]usbusb1:Product:MUSBHDRChostdriver
      154. [1.582140]usbusb1:Manufacturer:Linux3.17.2musb-hcd
      155. [1.587820]usbusb1:SerialNumber:musb-hdrc.0.auto
      156. [1.599603]hub1-0:1.0:USBhubfound
      157. [1.605078]hub1-0:1.0:1portdetected
      158. [1.622178]47401b00.usb-physupplyvccnotfound,usingdummyregulator
      159. [1.632793]musb-hdrcmusb-hdrc.1.auto:MUSBHDRChostdriver
      160. [1.640700]musb-hdrcmusb-hdrc.1.auto:newUSBbusregistered,assignedbusnumber2
      161. [1.651379]usbusb2:NewUSBdevicefound,idVendor=1d6b,idProduct=0002
      162. [1.658617]usbusb2:NewUSBdevicestrings:Mfr=3,Product=2,SerialNumber=1
      163. [1.666213]usbusb2:Product:MUSBHDRChostdriver
      164. [1.671397]usbusb2:Manufacturer:Linux3.17.2musb-hcd
      165. [1.677083]usbusb2:SerialNumber:musb-hdrc.1.auto
      166. [1.686595]hub2-0:1.0:USBhubfound
      167. [1.690986]hub2-0:1.0:1portdetected
      168. [1.701609]mousedev:PS/2mousedevicecommonforallmice
      169. [1.711782]omap_rtc44e3e000.rtc:rtccore:registered44e3e000.rtcasrtc0
      170. [1.720055]i2c/deventriesdriver
      171. [1.723788]Driverfor1-wireDallasnetworkprotocol.
      172. [1.736318]omap_wdt:OMAPWatchdogTimerRev0x01:initialtimeout60sec
      173. [1.755078]omap_hsmmc48060000.mmc:unabletogetvmmcregulator-517
      174. [1.762557]platform48060000.mmc:Driveromap_hsmmcrequestsprobedeferral
      175. [1.772215]ledtrig-cpu:registeredtoindicateactivityonCPUs
      176. [1.779192]usbcore:registerednewinterfacedriverusbhid
      177. [1.785014]usbhid:USBHIDcoredriver
      178. [1.795167]davinci_evmsound:ASoC:CODEC(null)notregistered
      179. [1.801977]davinci_evmsound:snd_soc_register_cardfailed(-517)
      180. [1.808594]platformsound:Driverdavinci_evmrequestsprobedeferral
      181. [1.816440]oprofile:usingarm/armv7
      182. [1.821115]TCP:cubicregistered
      183. [1.824592]InitializingXFRMnetlinksocket
      184. [1.829340]NET:Registeredprotocolfamily17
      185. [1.834075]NET:Registeredprotocolfamily15
      186. [1.839198]Keytypedns_resolverregistered
      187. [1.843920]omap_voltage_late_init:Voltagedriversupportnotadded
      188. [1.850660]sr_dev_init:Novoltagedomainspecifiedforsmartreflex0.Cannotinitialize
      189. [1.859152]sr_dev_init:Novoltagedomainspecifiedforsmartreflex1.Cannotinitialize
      190. [1.868786]ThumbEECPUextensionsupported.
      191. [1.873392]RegisteringSWP/SWPBemulationhandler
      192. [1.878502]SmartReflexClass3initialized
      193. [1.891065]omap-gpmc50000000.gpmc:GPMCrevision6.0
      194. [1.898216]nand:devicefound,ManufacturerID:0xec,ChipID:0xd3
      195. [1.904865]nand:SamsungNAND1GiB3,3V8-bit
      196. [1.909588]nand:1024MiB,SLC,pagesize:2048,OOBsize:64
      197. [1.915591]nand:usingOMAP_ECC_BCH8_CODE_HWECCscheme
      198. [1.921433]10ofpartpartitionsfoundonMTDdeviceomap2-nand.0
      199. [1.927825]Creating10MTDpartitionson"omap2-nand.0":
      200. [1.933473]0x000000000000-0x000000020000:"NAND.SPL"
      201. [1.947581]0x000000020000-0x000000040000:"NAND.SPL.backup1"
      202. [1.958288]0x000000040000-0x000000060000:"NAND.SPL.backup2"
      203. [1.967696]0x000000060000-0x000000080000:"NAND.SPL.backup3"
      204. [1.978978]0x000000080000-0x0000000c0000:"NAND.u-boot-spl"
      205. [1.989074]0x0000000c0000-0x0000001c0000:"NAND.u-boot"
      206. [2.000439]0x0000001c0000-0x0000001e0000:"NAND.u-boot-env"
      207. [2.010926]0x0000001e0000-0x000000200000:"NAND.u-boot-env.backup1"
      208. [2.022841]0x000000200000-0x000000a00000:"NAND.kernel"
      209. [2.038984]0x000000a00000-0x000010000000:"NAND.file-system"
      210. [2.332279]tps659100-002d:Nointerruptsupport,nocoreIRQ
      211. [2.349898]vrtc:1800mV
      212. [2.353264]vrtc:suppliedbyvbat
      213. [2.360422]vio:at1500mV
      214. [2.363696]vio:suppliedbyvbat
      215. [2.370657]vdd_mpu:912<-->1312mVat1325mV
      216. [2.375794]vdd_mpu:suppliedbyvbat
      217. [2.384999]vdd_core:912<-->1150mVat1137mV
      218. [2.390404]vdd_core:suppliedbyvbat
      219. [2.397288]vdd3:5000mV
      220. [2.402667]vdig1:at1800mV
      221. [2.406225]vdig1:suppliedbyvbat
      222. [2.412538]vdig2:at1800mV
      223. [2.415945]vdig2:suppliedbyvbat
      224. [2.422351]vpll:at1800mV
      225. [2.425662]vpll:suppliedbyvbat
      226. [2.432822]vdac:at1800mV
      227. [2.436335]vdac:suppliedbyvbat
      228. [2.443361]vaux1:at1800mV
      229. [2.446899]vaux1:suppliedbyvbat
      230. [2.453342]vaux2:at3300mV
      231. [2.456846]vaux2:suppliedbyvbat
      232. [2.463190]vaux33:at3300mV
      233. [2.466775]vaux33:suppliedbyvbat
      234. [2.473172]vmmc:1800<-->3300mVat3300mV
      235. [2.478237]vmmc:suppliedbyvbat
      236. [2.484283]vbb:at3000mV
      237. [2.487872]vbb:suppliedbyvbat
      238. [2.495458]omap_i2c44e0b000.i2c:bus0rev0.11at400kHz
      239. [2.503173]usb2-1:newhigh-speedUSBdevicenumber2usingmusb-hdrc
      240. [2.517638]omap_i2c4802a000.i2c:bus1rev0.11at100kHz
      241. [2.568304]wm89600-001a:Noplatformdatasupplied
      242. [2.644805]mmc0:hostdoesnotsupportreadingread-onlyswitch.assumingwrite-enable.
      243. [2.654108]usb2-1:NewUSBdevicefound,idVendor=1a40,idProduct=0101
      244. [2.661182]usb2-1:NewUSBdevicestrings:Mfr=0,Product=1,SerialNumber=0
      245. [2.668663]usb2-1:Product:USB2.0Hub
      246. [2.675544]hub2-1:1.0:USBhubfound
      247. [2.681178]hub2-1:1.0:4portsdetected
      248. [2.690227]mmc0:newhighspeedSDHCcardataddressaaaa
      249. [2.699372]mmcblk0:mmc0:aaaaSL16G14.8GiB
      250. [2.710574]mmcblk0:p1p2
      251. [2.723345]davinci_evmsound:wm8960-hifi<->4803c000.mcaspmappingok
      252. [2.806163]davinci_mdio4a101000.mdio:davincimdiorevision1.6
      253. [2.812552]davinci_mdio4a101000.mdio:detectedphymaskffffffde
      254. [2.825370]libphy:4a101000.mdio:probed
      255. [2.829704]davinci_mdio4a101000.mdio:phy[0]:device4a101000.mdio:00,driverunknown
      256. [2.838093]davinci_mdio4a101000.mdio:phy[5]:device4a101000.mdio:05,driverunknown
      257. [2.847649]cpsw4a100000.ethernet:DetectedMACID=c4:ed:ba:88:b5:e4
      258. [2.859600]input:gpio_keyad@0as/devices/gpio_keyad@0/input/input0
      259. [2.869505]omap_rtc44e3e000.rtc:settingsystemclockto2000-01-0100:00:00UTC(946684800)
      260. [2.878657]sr_init:NoPMIChooktoinitsmartreflex
      261. [2.884274]sr_init:platformdriverregisterfailedforSR
      262. [2.907467]lis3_reg:disabling
      263. [2.910975]ALSAdevicelist:
      264. [2.914075]#0:AM335x-EVM
      265. [3.008783]kjournaldstarting.Commitinterval5seconds
      266. [3.017395]EXT3-fs(mmcblk0p2):usinginternaljournal
      267. [3.025475]EXT3-fs(mmcblk0p2):recoverycomplete
      268. [3.030554]EXT3-fs(mmcblk0p2):mountedfilesystemwithordereddatamode
      269. [3.037888]VFS:Mountedroot(ext3filesystem)ondevice179:2.
      270. [3.047778]devtmpfs:mounted
      271. [3.051614]Freeingunusedkernelmemory:408K(c087c000-c08e2000)
      272. ----------mountall..........
      273. ----------Startingmdev......
      276. PleasepressEntertoactivatethisconsole.
      277. @tq335x#[11.296192]usb2-1.2:newhigh-speedUSBdevicenumber3usingmusb-hdrc
      278. [11.419745]usb2-1.2:devicev0951p1665isnotsupported
      279. [11.425483]usb2-1.2:NewUSBdevicefound,idVendor=0951,idProduct=1665
      280. [11.432693]usb2-1.2:NewUSBdevicestrings:Mfr=1,Product=2,SerialNumber=3
      281. [11.440342]usb2-1.2:Product:DataTraveler2.0
      282. [11.445163]usb2-1.2:Manufacturer:Kingston
      283. [11.449729]usb2-1.2:SerialNumber:50E549C20268FE41491C17E1
      284. [11.458198]usb-storage2-1.2:1.0:USBMassStoragedevicedetected
      285. [11.476650]scsihost0:usb-storage2-1.2:1.0
      286. [12.768968]scsi0:0:0:0:Direct-AccessKingstonDataTraveler2.01.00PQ:0ANSI:4
      287. [12.785085]sd0:0:0:0:[sda]30233588512-bytelogicalblocks:(15.4GB/14.4GiB)
      288. [12.806457]sd0:0:0:0:[sda]WriteProtectisoff
      289. [12.817312]sd0:0:0:0:[sda]Writecache:disabled,readcache:enabled,doesntsupportDPOorFUA
      290. [12.840718]sda:sda4
      291. [12.850713]sd0:0:0:0:[sda]AttachedSCSIremovabledisk
      292. [13.265222]usb2-1.2:USBdisconnect,devicenumber3
      末尾是拔插U盤的效果。
      Step4. 配置其它USB設(shè)備驅(qū)動(dòng)
      如果需要配置其它USB設(shè)備驅(qū)動(dòng)可以繼續(xù)在menuconfig配置列表中進(jìn)行配置，這里就不一一介紹了。
      注：
      不知道是我的開發(fā)板硬件問(wèn)題還是其它問(wèn)題，我自己移植的Linux-3.17.2只有中間的一個(gè)USB端口可用，另外兩個(gè)USB端口沒有任何作用。使用官方提供的內(nèi)核鏡像也存在這樣的問(wèn)題，下周一跟天嵌售后確認(rèn)下此問(wèn)題。如果看到本文的朋友手頭上也有TQ3358開發(fā)板，請(qǐng)幫忙測(cè)試下，多謝。
      
				
            
                
			
							
      
                
			              
              
            
      
		
      
		
      
		
      
		
      
		
      
			
        
				
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