usb cdrom support on USB OHCI

 

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usb cdrom support on USB OHCI

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Posted by Power Pan

on 30 Apr 2012 6:20 AM

Expert1765 points

Hi, 

just wanna ask if anybody could tell AM1808 support usb CDROM or not.

scsi1432 : usb-storage 2-1:1.0
usb 2-1: USB disconnect, address 12
usb 2-1: new full speed USB device using ohci and address 13
usb 2-1: not running at top speed; connect to a high speed hub
scsi1433 : usb-storage 2-1:1.0

USB OHCI could not support CD-ROM，and USB high speed driver reports not support.

Best regards,

Power Pan

 

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  Posted by Ajay

  on30 Apr 2012 9:54 AM

  Verified Answer

  Verified by Power Pan

  

  Genius9180 points

  What actually does high speed port (musb) prints? You may need to enabled any specific driver needed for your CD ROM.

  Ajay

  If my reply answers your question then please click on the green button"Verify Answer"
• 

  Posted by Power Pan

  on1 May 2012 5:06 AM

  

  Expert1765 points

  Hi, Ajay:

  no matter  high speed or OHCI, the kernel outputs nothing but reported DVD-ROM found while no media inserted.

  usb 3-1: new high speed USB device using musb_hdrc and address 20
  usb 3-1: device v1bcf p0c31 is not supported
  scsi19 : usb-storage 3-1:1.0
  scsi 19:0:0:0: CD-ROM MATSHITA DVD+-RW UJ8C1 D.02 PQ: 0 ANSI: 0
  scsi 19:0:0:0: Attached scsi generic sg0 type 5
  usb 3-1: USB disconnect, address 20

  root# mount
  rootfs on / type rootfs (rw)
  /dev/root on / type ext3 (rw,relatime,errors=continue,data=writeback)
  proc on /proc type proc (rw,relatime)
  sysfs on /sys type sysfs (rw,relatime)
  none on /dev type tmpfs (rw,relatime,size=1024k,nr_inodes=8192,mode=755)
  /dev/mmcblk0p1 on /media/card type ext3 (rw,relatime,errors=continue,data=writeback)
  devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620)
  tmpfs on /var/volatile type tmpfs (rw,relatime)
  tmpfs on /dev/shm type tmpfs (rw,relatime,mode=777)
  tmpfs on /media/ram type tmpfs (rw,relatime)

  nothing mounted and could not mount the disc. even scsi device detected. already add cd-rom file system options in kernel

  root:/media# cat /proc/scsi/scsi
  Attached devices:
  Host: scsi25 Channel: 00 Id: 00 Lun: 00
  Vendor: MATSHITA Model: DVD+-RW UJ8C1 Rev: D.02
  Type: CD-ROM ANSI SCSI revision: 00

  don't know how to mount and how to make the cd-rom to be read.

  Regards,

  Power Pan
•  
• 

  Posted by Power Pan

  on1 May 2012 7:22 AM

  

  Expert1765 points

  Hi, Ajay, 

  problem solved.

  2 things went wrong,

  1, usb supply current is not enough cause CD disc spin up over current power reset

  2. scsi cdrom support did not turn on in kernel.

  But only work on usb 1.1 host, 2.0 port not work.

  thanks a lot.

  Power Pan
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• 

  Posted by Ajay

  on2 May 2012 12:32 AM

  

  Genius9180 points

  Can you send the log when CDROM connected to usb2.0 musb port? We can see and try to debug why CDROM doesn't work on usb2.0 port.

  Ajay

  If my reply answers your question then please click on the green button"Verify Answer"
•  
• 

  Posted by Power Pan

  on3 May 2012 11:06 AM

  

  Expert1765 points

  new full speed USB device using ohci and address 2
  usb 2-1: not running at top speed; connect to a high speed hub
  scsi1 : usb-storage 2-1:1.0
  scsi 1:0:0:0: CD-ROM MATSHITA DVD+-RW UJ8C1 D.02 PQ: 0 ANSI: 0
  sr0: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
  Uniform CD-ROM driver Revision: 3.20
  sr 1:0:0:0: Attached scsi generic sg0 type 5

  above is usb 1.1 output message. 

  and I could use cdparanoia -vsQ to see the sound track in the DISC

  for usb 2.0 port, sometime it fails to response, like plugs nothing. sometimes it could work 

  usb 3-1: new high speed USB device using musb_hdrc and address 2
  usb 3-1: device v1bcf p0c31 is not supported
  scsi2 : usb-storage 3-1:1.0
  scsi 2:0:0:0: CD-ROM MATSHITA DVD+-RW UJ8C1 D.02 PQ: 0 ANSI: 0
  sr0: scsi3-mmc drive: 47x/62x writer dvd-ram cd/rw xa/form2 cdda tray
  sr 2:0:0:0: Attached scsi generic sg0 type 5

  but when I use cdparanoia -vsQ, usb host failed to respond

  usb 3-1: reset high speed USB device using musb_hdrc and address 2
  usb 3-1: reset high speed USB device using musb_hdrc and address 2
  sending SG SCSI reset... FAILED: EBUSY

  then usb host down....

  I'm using 2.6.33 kernel, and we failed to use 37 because we could not use UART0 for the console, don't know how to solve.

   
•  
• 

  Posted by Power Pan

  on4 May 2012 8:08 AM

  

  Expert1765 points

  ata1: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen
  ata1: irq_stat 0x00000040, connection status changed
  ata1: SError: { CommWake DevExch }
  ata1: hard resetting link
  ata1: link is slow to respond, please be patient (ready=0)
  ata1: COMRESET failed (errno=-16)
  ata1: hard resetting link
  ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
  ata1.00: ATA-8: WDC WD20EARX-00PASB0, 51.0AB51, max UDMA/133
  ata1.00: 3907029168 sectors, multi 0: LBA48 NCQ (depth 31/32), AA
  ata1.00: configured for UDMA/133
  ata1: EH complete
  scsi 0:0:0:0: Direct-Access ATA WDC WD20EARX-00P 51.0 PQ: 0 ANSI: 5
  sd 0:0:0:0: Attached scsi generic sg0 type 0
  sd 0:0:0:0: [sda] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB)
  sd 0:0:0:0: [sda] 4096-byte physical blocks
  sd 0:0:0:0: [sda] Write Protect is off
  sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
  sda: sda1
  sda: p1 size 3907038082 exceeds device capacity, limited to end of disk

  could you please tell me if the last warning will cause any problem during HDD accessing?

   
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• 

  Posted by Ajay

  on4 May 2012 10:52 AM

  

  Genius9180 points

  The error message "usb 3-1: reset high speed USB device using musb_hdrc and address 2" is pointing that there is request timeout for CDROM. It seems you are connecting the CDROM device directly to board so there is no issue of endpoint resources.

  Can you try after disabling USB2.0 DMA at drivers->USB support->Inventra->select [*] Disable DMA

  Ajay

  If my reply answers your question then please click on the green button"Verify Answer"