AM335X USB1焊接USB转SD芯片，无法识别SD卡

pengwei qiu

[    1.408611] usb 1-1: New USB device found, idVendor=05e3, idProduct=0723
[    1.415634] usb 1-1: New USB device strings: Mfr=3, Product=4, SerialNumber=2
[    1.423083] usb 1-1: Product: USB Storage
[    1.427259] usb 1-1: Manufacturer: Generic
[    1.431628] usb 1-1: SerialNumber: 000000009451
[    1.438238] usb-storage 1-1:1.0: Quirks match for vid 05e3 pid 0723: 8000
[    1.445406] scsi0 : usb-storage 1-1:1.0
[    2.442591] scsi 0:0:0:0: Direct-Access     Generic  STORAGE DEVICE   9451 PQ: 0 ANSI: 0
[    2.590946] omap_i2c omap_i2c.2: wait_for_completion_timeout:controller timed out
[    2.610972] msg ft5x0x_read_reg i2c read error: -110
[    2.766449] sd 0:0:0:0: [sda] 15529984 512-byte logical blocks: (7.95 GB/7.40 GiB)
[    2.775125] sd 0:0:0:0: [sda] Write Protect is off
[    2.780891] sd 0:0:0:0: [sda] No Caching mode page present
[    2.786623] sd 0:0:0:0: [sda] Assuming drive cache: write through
[    2.796497] sd 0:0:0:0: [sda] No Caching mode page present
[    2.802244] sd 0:0:0:0: [sda] Assuming drive cache: write through
[    3.276165] sd 0:0:0:0: [sda] Unhandled sense code
[    3.281182] sd 0:0:0:0: [sda]  Result: hostbyte=0x00 driverbyte=0x08
[    3.287813] sd 0:0:0:0: [sda]  Sense Key : 0x3 [current]
[    3.293462] sd 0:0:0:0: [sda]  ASC=0x47 ASCQ=0x1
[    3.298281] sd 0:0:0:0: [sda] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00

[    6.601090] usb 1-1: reset high-speed USB device number 2 using musb-hdrc
[    7.185491] sd 0:0:0:0: [sda] Media Changed
[    7.189887] sd 0:0:0:0: [sda]  Result: hostbyte=0x00 driverbyte=0x08
[    7.196570] sd 0:0:0:0: [sda]  Sense Key : 0x6 [current]
[    7.202223] sd 0:0:0:0: [sda]  ASC=0x28 ASCQ=0x0
[    7.207042] sd 0:0:0:0: [sda] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
[    7.214541] end_request: I/O error, dev sda, sector 0
[    7.219813] Buffer I/O error on device sda, logical block 0
[    7.225723]  sda: unable to read partition table
[    7.354064] sd 0:0:0:0: [sda] No Caching mode page present
[    7.359808] sd 0:0:0:0: [sda] Assuming drive cache: write through
[    7.366240] sd 0:0:0:0: [sda] Attached SCSI removable disk

以上是内核识别的打印信息，是怎么回事呢？？？

9 年多前