PowerPC u-boot移植，usb检测不到存储设备

[ziyanghgd]

u-boot移植本来已经正确完成了，下面是移植成功后usb的打印信息：
HIT53_COME=> usb start
(Re)start USB...
USB0: USB EHCI 1.00
scanning bus 0 for devices... 2 USB Device(s) found
scanning usb for storage devices... 1 Storage Device(s) found


但是楼主手贱，不知道是怎么动了硬件，过了一会儿又检测不到usb设备了，打印信息：
HIT53_COME=> usb start
(Re)start USB...
USB0: USB EHCI 1.00
scanning bus 0 for devices... 1 USB Device(s) found
scanning usb for storage devices... 0 Storage Device(s) found


可以肯定软件是肯定没问题的，因为已经正确启动过了。肯定是硬件出了问题
本小白没有研究过usb驱动，所以不能判断打印信息的含义是什么。下面是加入“DEBUG”宏后详细的打印信息。看不懂，求大神帮忙分析一下！小弟在此谢过！
********************************************************************************************
加入“DEBUG”宏后详细的打印信息：（检测不到usb）
HIT53_COME=> usb start （输入usb start指令）
(Re)start USB...
USB0: Register 10011 NbrPorts 1
USB EHCI 1.00
scanning bus 0 for devices... New Device 0
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x100 index 0x0length 0x40
req=6 (0x6), type=128 (0x80), value=256, index=0
USB_DT_DEVICE request
set address 1
usb_control_msg: request: 0x5, requesttype: 0x0, value 0x1 index 0x0length 0x0
req=5 (0x5), type=0 (0x0), value=1, index=0
USB_REQ_SET_ADDRESS
Len is 0
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x100 index 0x0length 0x12
req=6 (0x6), type=128 (0x80), value=256, index=0
USB_DT_DEVICE request
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x200 index 0x0length 0x9
req=6 (0x6), type=128 (0x80), value=512, index=0
USB_DT_CONFIG config
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x200 index 0x0length 0x19
req=6 (0x6), type=128 (0x80), value=512, index=0
USB_DT_CONFIG config
get_conf_no 0 Result 25, wLength 25
if 0, ep 0
##EP epmaxpacketin[1] = 2048
set configuration 1
usb_control_msg: request: 0x9, requesttype: 0x0, value 0x1 index 0x0length 0x0
req=9 (0x9), type=0 (0x0), value=1, index=0
USB_REQ_SET_CONFIGURATION
Len is 0
new device strings: Mfr=1, Product=2, SerialNumber=0
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x300 index 0x0length 0xFF
req=6 (0x6), type=128 (0x80), value=768, index=0
USB_DT_STRING config
USB device number 1 default language ID 0x1
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x301 index 0x1length 0xFF
req=6 (0x6), type=128 (0x80), value=769, index=1
USB_DT_STRING config
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x302 index 0x1length 0xFF
req=6 (0x6), type=128 (0x80), value=770, index=1
USB_DT_STRING config
Manufacturer u-boot
Product EHCI Host Controller
SerialNumber
USB hub found
usb_control_msg: request: 0x6, requesttype: 0xA0, value 0x2900 index0x0 length 0x4
req=6 (0x6), type=160 (0xa0), value=10496, index=0
USB_DT_HUB config
usb_control_msg: request: 0x6, requesttype: 0xA0, value 0x2900 index0x0 length 0x8
req=6 (0x6), type=160 (0xa0), value=10496, index=0
USB_DT_HUB config
1 ports detected
ganged power switching
standalone hub
global over-current protection
power on to power good time: 20ms
hub controller current requirement: 0mA
port 1 is removable
usb_control_msg: request: 0x0, requesttype: 0xA0, value 0x0 index 0x0length 0x4
req=0 (0x0), type=160 (0xa0), value=0, index=0
get_hub_status returned status 1, change 1
local power source is lost (inactive)
no over-current condition exists
enabling power on all ports
usb_control_msg: request: 0x3, requesttype: 0x23, value 0x8 index 0x1length 0x0
req=3 (0x3), type=35 (0x23), value=8, index=1
Len is 0
port 1 returns 0
usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1length 0x4
req=0 (0x0), type=163 (0xa3), value=0, index=1
Port 1 Status 500 Change 0
1 USB Device(s) found
scan end
scanning usb for storagedevices... 0 Storage Device(s) found


**********************************************************************************************
而正确的打印信息应该是下面这样：（写不下了，与前面一样的部分省略）

Port 1 Status 501 Change 1
port 1 connection change
usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4
req=0 (0x0), type=163 (0xa3), value=0, index=1
portstatus 501, change 1, 480 Mb/s
usb_control_msg: request: 0x1, requesttype: 0x23, value 0x10 index 0x1 length 0x0
req=1 (0x1), type=35 (0x23), value=16, index=1
Len is 0
hub_port_reset: resetting port 0...
usb_control_msg: request: 0x3, requesttype: 0x23, value 0x4 index 0x1 length 0x0
req=3 (0x3), type=35 (0x23), value=4, index=1
Len is 0
usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4
req=0 (0x0), type=163 (0xa3), value=0, index=1
portstatus 503, change 10, 480 Mb/s
STAT_C_CONNECTION = 0 STAT_CONNECTION = 1 USB_PORT_STAT_ENABLE 1
usb_control_msg: request: 0x1, requesttype: 0x23, value 0x14 index 0x1 length 0x0
req=1 (0x1), type=35 (0x23), value=20, index=1
Len is 0
New Device 1
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x100 index 0x0 length 0x40
dev=3ffb26c0, pipe=80000083, buffer=3fe2d560, length=64, req=3fe2d4c0
req=6 (0x6), type=128 (0x80), value=256 (0x100), index=0
TOKEN=0x8c00
hub_port_reset: resetting port 0...
usb_control_msg: request: 0x3, requesttype: 0x23, value 0x4 index 0x1 length 0x0
req=3 (0x3), type=35 (0x23), value=4, index=1
Len is 0
usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4
req=0 (0x0), type=163 (0xa3), value=0, index=1
portstatus 503, change 10, 480 Mb/s
STAT_C_CONNECTION = 0 STAT_CONNECTION = 1 USB_PORT_STAT_ENABLE 1
usb_control_msg: request: 0x1, requesttype: 0x23, value 0x14 index 0x1 length 0x0
req=1 (0x1), type=35 (0x23), value=20, index=1
Len is 0
set address 2
usb_control_msg: request: 0x5, requesttype: 0x0, value 0x2 index 0x0 length 0x0
dev=3ffb26c0, pipe=8c000000, buffer=00000000, length=0, req=3fe2d4e0
req=5 (0x5), type=0 (0x0), value=2 (0x2), index=0
TOKEN=0x8d00
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x100 index 0x0 length 0x12
dev=3ffb26c0, pipe=80000283, buffer=3fe2d560, length=18, req=3fe2d4c0
req=6 (0x6), type=128 (0x80), value=256 (0x100), index=0
TOKEN=0x8c00
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x200 index 0x0 length 0x9
dev=3ffb26c0, pipe=80000283, buffer=3fe2d560, length=9, req=3fe2d4a0
req=6 (0x6), type=128 (0x80), value=512 (0x200), index=0
TOKEN=0x8c00
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x200 index 0x0 length 0x20
dev=3ffb26c0, pipe=80000283, buffer=3fe2d560, length=32, req=3fe2d4a0
req=6 (0x6), type=128 (0x80), value=512 (0x200), index=0
TOKEN=0x8c00
get_conf_no 0 Result 32, wLength 32
if 0, ep 0
if 0, ep 1
##EP epmaxpacketin[2] = 512
##EP epmaxpacketout[1] = 512
set configuration 1
usb_control_msg: request: 0x9, requesttype: 0x0, value 0x1 index 0x0 length 0x0
dev=3ffb26c0, pipe=80000203, buffer=00000000, length=0, req=3fe2d4e0
req=9 (0x9), type=0 (0x0), value=1 (0x1), index=0
TOKEN=0x8d00
new device strings: Mfr=1, Product=2, SerialNumber=3
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x300 index 0x0 length 0xFF
dev=3ffb26c0, pipe=80000283, buffer=3fe2d300, length=255, req=3fe2d240
req=6 (0x6), type=128 (0x80), value=768 (0x300), index=0
TOKEN=0x8c00
USB device number 2 default language ID 0x409
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x301 index 0x409 length 0xFF
dev=3ffb26c0, pipe=80000283, buffer=3fe2d300, length=255, req=3fe2d240
req=6 (0x6), type=128 (0x80), value=769 (0x301), index=1033
TOKEN=0x8c00
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x302 index 0x409 length 0xFF
dev=3ffb26c0, pipe=80000283, buffer=3fe2d300, length=255, req=3fe2d240
req=6 (0x6), type=128 (0x80), value=770 (0x302), index=1033
TOKEN=0x8c00
usb_control_msg: request: 0x6, requesttype: 0x80, value 0x303 index 0x409 length 0xFF
dev=3ffb26c0, pipe=80000283, buffer=3fe2d300, length=255, req=3fe2d240
req=6 (0x6), type=128 (0x80), value=771 (0x303), index=1033
TOKEN=0x8c00
Manufacturer General
Product USB Flash Disk
SerialNumber 4AA835B9D3588D80
2 USB Device(s) found
scan end
scanning usb for storage devices... usb_control_msg: request: 0xFE, requesttype: 0xA1, value 0x0 index 0x0 length 0x1
dev=3ffb26c0, pipe=80000283, buffer=3fe2dd00, length=1, req=3fe2dc80
req=254 (0xfe), type=161 (0xa1), value=0 (0x0), index=0
TOKEN=0x8c00
dev=3ffb26c0, pipe=c0008203, buffer=3fe2dbc0, length=31, req=00000000
TOKEN=0x80008c01
dev=3ffb26c0, pipe=c0010283, buffer=3fe2dc80, length=36, req=00000000
TOKEN=0x80008d00
dev=3ffb26c0, pipe=c0010283, buffer=3fe2db80, length=13, req=00000000
TOKEN=0x8d00
dev=3ffb26c0, pipe=c0008203, buffer=3fe2dbc0, length=31, req=00000000
TOKEN=0x8c01
dev=3ffb26c0, pipe=c0010283, buffer=3fe2db80, length=13, req=00000000
TOKEN=0x80008d00
dev=3ffb26c0, pipe=c0008203, buffer=3fe2dbc0, length=31, req=00000000
TOKEN=0x80008c01
dev=3ffb26c0, pipe=c0010283, buffer=3fe2dc40, length=8, req=00000000
TOKEN=0x8d00
dev=3ffb26c0, pipe=c0010283, buffer=3fe2db80, length=13, req=00000000
TOKEN=0x80008d00
dev=3ffb26c0, pipe=c0008203, buffer=3fe2d920, length=31, req=00000000
TOKEN=0x8c01
dev=3ffb26c0, pipe=c0010283, buffer=3fe2d9e0, length=512, req=00000000
TOKEN=0x8d00
dev=3ffb26c0, pipe=c0010283, buffer=3fe2d8e0, length=13, req=00000000
TOKEN=0x80008d00
1 Storage Device(s) found

[ziyanghgd]

引用 1 楼 Huntercao 的回复:

那你到底改动了硬件的什么地方？ U盘插入的端口号？主板的电源管理系统？ USB有时候比较娇嫩，需要确保USB口或者USB线连接稳定，工作稳定才能好好工作。 是不是原来能够工作也是偶然的。

其实是这样的，我焊了两块儿完全一样的板子，烧的u-boot也一样。其中一块正常，另一块usb有问题。板子是COM express规范的计算机模块，通过连接器与主板各个外设（包括usb相连），因此可能存在接触不良。但我怀疑很有可能是其他的硬件问题

[曹大夯]

能不能把正确的日志打印全了？看起来日志的前面部分是初始化Host Controller和Hub的，有更具体的信息。

正常的日志里有“local power source is lost (inactive)”么？

[曹大夯]

那你到底改动了硬件的什么地方？ U盘插入的端口号？主板的电源管理系统？ USB有时候比较娇嫩，需要确保USB口或者USB线连接稳定，工作稳定才能好好工作。 是不是原来能够工作也是偶然的。

[faiy0000]

我调试 I.MX51，到enabling power on all ports usb_control_msg: request: 0x3, requesttype: 0x23, value 0x8 index 0x1length 0x0 就停了，也郁闷了。

[炽热恒星]

你先测量引脚的的电压是否正常