求助！！，无法识别U盘

我们是自己做的版 ，芯片是TMS320DM8148BCYE，主要是参考dvrrdk上的参考设计来画。u***接口是做在接口板上通过排线连接到主板（接口板上还有sd卡接口可正常工作），然后我们在dvrrdk4.0和ipnc3.5的内核中测试这个u盘挂载。结果没有任何反应，/dev下没有相关节点，dmesg没有新的输出。


我们的这个u***口的那个USB0_ID没有连接是否有问题？？？也没有拉低是否有问题？？
内核的配置我在u***驱动那一块勾选了
<*>   Support for Host-side USB
<*>   USB Mass Storage support
其它多余的没有勾选，我在DVRRDK的内核和IPNC的内核上都试过，DVRRDK默认就是HOST，而在IPNC上的内核默认没勾主模式我还去掉了
< >   USB Gadget Support  --->
然后勾上了上面的两个USB主模式
分别用这个这两个内核启动，而内核关于u***的输出是：
root@dm814x-evm:~#:dmesg | grep u***mu***-hdrc: version 6.0, host, debug=0mu***-hdrc mu***-hdrc.0: dma type: dma-cppi41PM: Adding info for platform:nop_u***_xceiv.0u***2phy: computed values rxcalib(15)DACs(25 13 11)u***2phy: override computed values rxcalib(15)DACs(25 13 11)u***2phy_config: mu***(0) rxcalib done, rxcalib read value 6f6cdb5emu***-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)mu***-hdrc: MHDRC RTL version 2.0 mu***-hdrc: setup fifo_mode 4mu***-hdrc: 28/31 max ep, 16384/16384 memorymu***-hdrc mu***-hdrc.0: MUSB HDRC host drivermu***-hdrc mu***-hdrc.0: new USB bus registered, assigned bus number 1PM: Adding info for u***:u***1PM: Adding info for u***:1-0:1.0PM: Adding info for No Bus:u***dev1.1mu***-hdrc mu***-hdrc.0: USB Host mode controller at c581e000 using DMA, IRQ 18Registered /proc/driver/mu***_hdrc.0mu***-hdrc mu***-hdrc.1: dma type: dma-cppi41PM: Adding info for platform:nop_u***_xceiv.1u***2phy: computed values rxcalib(15)DACs(23 14 16)u***2phy: override computed values rxcalib(15)DACs(23 14 16)u***2phy_config: mu***(1) rxcalib done, rxcalib read value 6f6bdd86mu***-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)mu***-hdrc: MHDRC RTL version 2.0 mu***-hdrc: setup fifo_mode 4mu***-hdrc: 28/31 max ep, 16384/16384 memorymu***-hdrc mu***-hdrc.1: MUSB HDRC host drivermu***-hdrc mu***-hdrc.1: new USB bus registered, assigned bus number 2PM: Adding info for u***:u***2PM: Adding info for u***:2-0:1.0PM: Adding info for No Bus:u***dev2.1mu***-hdrc mu***-hdrc.1: USB Host mode controller at c5828800 using DMA, IRQ 19Registered /proc/driver/mu***_hdrc.1u***core: registered new interface driver u***-storage内核启动过程中也有：
Initializing USB Mass Storage driver...
u***core: registered new interface driver u***-storage
USB Mass Storage support registered.