sdk08.00 am335x u*** 一主一从设计

各位好，现在想要u***0设置为从模式，与PC通信；u***1设置为主模式，通过hub连接各种u***设备。u***1功能已实现，u***0通过u***线连接电脑无反应。
硬件上，两个u***的vbus脚都是直接接5V，u***0的ID脚悬空，u***1的ID脚下拉到地。除DM、DP外的其它脚悬空。
dts配置如下：
&u*** [        status = "okay";        control@44e10620 [                status = "okay";        ];        u***-phy@47401300 [                status = "okay";        ];        u***-phy@47401b00 [                status = "okay";        ];        u***@47401000 [                status = "okay";        ];        u***@47401800 [                status = "okay";                dr_mode = "host";        ];        dma-controller@47402000  [                status = "okay";                dr_mode = "peripheral";        ];];
启动后u***信息如下：
dmesg | grep u***[    0.250293] u***core: registered new interface driver u***fs[    0.250482] u***core: registered new interface driver hub[    0.250677] u***core: registered new device driver u***[    1.275226] u***core: registered new interface driver asix[    1.281138] u***core: registered new interface driver ax88179_178a[    1.287742] u***core: registered new interface driver cdc_ether[    1.294095] u***core: registered new interface driver smsc95xx[    1.300298] u***core: registered new interface driver net1080[    1.306424] u***core: registered new interface driver cdc_subset[    1.312794] u***core: registered new interface driver zaurus[    1.318900] u***core: registered new interface driver cdc_ncm[    1.325029] u***core: registered new interface driver cdc_mbim[    1.355088] u***core: registered new interface driver cdc_wdm[    1.361281] u***core: registered new interface driver u***-storage[    1.368011] u***core: registered new interface driver u***serial[    1.374324] u***core: registered new interface driver option[    1.380329] u***serial: USB Serial support registered for GSM modem (1-port)[    1.389949] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/u***@47400000/u***-phy@47401300[0]'[    1.390014] 47401300.u***-phy supply vcc not found, using dummy regulator[    1.399816] mu***-hdrc mu***-hdrc.0.auto: Failed to request rx1.[    1.406019] mu***-hdrc mu***-hdrc.0.auto: mu***_init_controller failed with status -517[    1.414335] platform mu***-hdrc.0.auto: Driver mu***-hdrc requests probe deferral[    1.422741] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/u***@47400000/u***-phy@47401b00[0]'[    1.422794] 47401b00.u***-phy supply vcc not found, using dummy regulator[    1.432417] mu***-hdrc mu***-hdrc.1.auto: Failed to request rx1.[    1.438708] mu***-hdrc mu***-hdrc.1.auto: mu***_init_controller failed with status -517[    1.446892] platform mu***-hdrc.1.auto: Driver mu***-hdrc requests probe deferral[    1.512511] u***core: registered new interface driver uvcvideo[    1.586269] u***core: registered new interface driver u***hid[    1.592184] u***hid: USB HID core driver[    2.870145] mu***-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)[    2.870162] mu***-hdrc: MHDRC RTL version 2.0 [    2.870172] mu***-hdrc: setup fifo_mode 4[    2.870187] mu***-hdrc: 28/31 max ep, 16384/16384 memory[    2.870292] mu***-hdrc mu***-hdrc.0.auto: MUSB HDRC host driver[    2.876833] mu***-hdrc mu***-hdrc.0.auto: new USB bus registered, assigned bus number 1[    2.885360] u*** u***1: New USB device found, idVendor=1d6b, idProduct=0002[    2.892526] u*** u***1: New USB device strings: Mfr=3, Product=2, SerialNumber=1[    2.900127] u*** u***1: Product: MUSB HDRC host driver[    2.905351] u*** u***1: Manufacturer: Linux 3.14.26 mu***-hcd[    2.911141] u*** u***1: SerialNumber: mu***-hdrc.0.auto[    2.930167] mu***-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)[    2.930186] mu***-hdrc: MHDRC RTL version 2.0 [    2.930194] mu***-hdrc: setup fifo_mode 4[    2.930209] mu***-hdrc: 28/31 max ep, 16384/16384 memory[    2.930333] mu***-hdrc mu***-hdrc.1.auto: MUSB HDRC host driver[    2.936934] mu***-hdrc mu***-hdrc.1.auto: new USB bus registered, assigned bus number 2[    2.945428] u*** u***2: New USB device found, idVendor=1d6b, idProduct=0002[    2.952588] u*** u***2: New USB device strings: Mfr=3, Product=2, SerialNumber=1[    2.960197] u*** u***2: Product: MUSB HDRC host driver[    2.965417] u*** u***2: Manufacturer: Linux 3.14.26 mu***-hcd[    2.971195] u*** u***2: SerialNumber: mu***-hdrc.1.auto[    3.387144] u*** 2-1: new high-speed USB device number 2 using mu***-hdrc[    3.549623] u*** 2-1: New USB device found, idVendor=0424, idProduct=2514[    3.556675] u*** 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0[    3.888301] u*** 2-1.2: new high-speed USB device number 3 using mu***-hdrc[    4.117340] u*** 2-1.2: New USB device found, idVendor=058f, idProduct=5608[    4.124577] u*** 2-1.2: New USB device strings: Mfr=3, Product=1, SerialNumber=0[    4.132276] u*** 2-1.2: Product: USB 2.0 Web Camera[    4.137322] u*** 2-1.2: Manufacturer: Alcor Micro, Corp.[    4.217896] input: USB 2.0 Web Camera as /devices/ocp.3/47400000.u***/47401c00.u***/mu***-hdrc.1.auto/u***2/2-1/2-1.2/2-1.2:1.0/input/input1root@am335x-evm:~# dmesg | grep hub[    0.250482] u***core: registered new interface driver hub[    2.917427] hub 1-0:1.0: USB hub found[    2.921458] hub 1-0:1.0: 1 port detected[    2.977400] hub 2-0:1.0: USB hub found[    2.981425] hub 2-0:1.0: 1 port detected[    3.588407] hub 2-1:1.0: USB hub found[    3.592472] hub 2-1:1.0: 4 ports detected
想问下：
1.硬件上是否可以这样设计？
2.如果可以，是否还有哪里需要设置或什么的？之前调试u***1的时候，由于下接hub不支持热插拔，打过一个patch，此外就没有修改过内核u***相关文件了。
期待各位的回复，先行谢过。