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        AM335x(TQ335x)學習筆記——USB驅動移植
        
						
        
				作者：
				時間：2016-11-28
				來源：網絡

							
				
				
				
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			對于AM335x來講，TI維護的USB驅動已經非常完善了，本文稱之為移植，實際上僅僅是配置內核選項使能USB HOST/OTG功能。廢話少說，直接動手開啟AM335x的USB驅動配置項。
        Step1. 配置內核支持USB
        本文引用地址：http://www.104case.com/article/201611/322825.htm
        默認的配置項沒有配置USB相關的選項，但是DTS已經配置好了，我們不需要對DTS作任何修改，詳細的內核配置項如下：
        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. 編譯內核
        編譯內核的指令如下：
        1. makeARCH=armCROSS_COMPILE=arm-linux-gnueabi--j8
        Step3.測試
        用新編譯好的內核啟動開發板，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設備驅動
        如果需要配置其它USB設備驅動可以繼續在menuconfig配置列表中進行配置，這里就不一一介紹了。
        注：
        不知道是我的開發板硬件問題還是其它問題，我自己移植的Linux-3.17.2只有中間的一個USB端口可用，另外兩個USB端口沒有任何作用。使用官方提供的內核鏡像也存在這樣的問題，下周一跟天嵌售后確認下此問題。如果看到本文的朋友手頭上也有TQ3358開發板，請幫忙測試下，多謝。
        
				
            
                
			
							
        
                
			              
              
            
        
		
        
		
        
		
        
		
        
		
        
			
          
				
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