A tool to read USB drive strength

HuiW · February 24, 2021, 8:11am

Hi

Followed the USB tuning guide to tune USB eye diagram.
From p14 of Jetson_TX1_USB_Tuning_Guide_Application_Note.pdf ( see below)

We will need a SW to get TX1 USB drive strength with our adjusted offset value to set the register.

Is there a way to get the tool?

Thank you for any advice,

Trumany · February 24, 2021, 9:09am

Devmem2 can be used to w/r register, please install it.

HuiW · February 25, 2021, 11:17am

Hi Trumany,

Thank you for your prompt support.

Yes. We do use devmem2 to tune.
Not sure the doc p13 shows HS_CURR_LEVEL, TERM_RANGE_ADJ can be read by devmem2.

Thank you,

Trumany · February 25, 2021, 12:12pm

The registers that can be w/r are included in tuning guide.