USB OTG electrical test mode support

Ajay

Other Parts Discussed in Thread: AM3517, TUSB7340

Does the PSP driver for Am3517 support the various test_packet modes of operation in which an attached USB device can send a command over the link in order to put the Shiva into a test mode (driving repetitive pattern continuously for eye testing).

Or do we have to run code to manually set OMAP registers to put the device into test mode (sending test packets continuously).

Regards,

Ajay {on behalf of David Smiley}

over 14 years ago

0 Ajay over 14 years ago

TI__Genius 9460 points

PSP linux driver does support test modes.

Use below command to start sending test packet while in host mode where a device is attached to OTG port.

$ echo T > /proc/driver/musb_hdrc

While is device mode, OTG controller will respond to the SET_FEATURE commands sent by host PC running

the USB High-Speed Electrical Test Tool from USBIF (details at below link) and then enter into various test modes.

http://www.usb.org/developers/tools#usbhset

Regards,

Ajay

0 Arthur Huang over 11 years ago in reply to Ajay

TI__Expert 6065 points

Hi Ajay,

could you please advise how to set the Linux command for sending the test packet on TUSB7340 for USB2 high-speed eye diagram test? Thanks.

Regards,

Arthur Huang

Processors

Processors forum

USB OTG electrical test mode support