i.MX ProcessorsのトピックRe: About imx8mplus USB Certification

About imx8mplus USB Certification

t2865k5 — Fri, 27 Aug 2021 09:58:52 GMT

Dear NXP ,

HW : srg_imx8mplus (base on : imx8mplus ,and remove all type c USB HW)

(1) USB 3.0 -> USB 2.0 HUB -> output USB 2.0 signal .

(2) USB 3.0 -> USB 3.0 HUB -> out USB 3.0 signal .

How do I set up the USB register with a software ,and make the USB output parten all the time?
I need to use an instrument to test the USB 2.0 and USB 3.0 eye diagram.

Re: About imx8mplus USB Certification

igorpadykov — Fri, 27 Aug 2021 11:52:05 GMT

Hi Albert

for usb certification one can look at AN12409

i.MX6/7/8 series USB Certification Guide

Best regards
igor

Re: About imx8mplus USB Certification

t2865k5 — Mon, 30 Aug 2021 01:12:45 GMT

Dear NXP ,

Are imx8mplus and imx8 series related registers the same?

I run command as follows:

memtool 0x20c9010 1

Re: About imx8mplus USB Certification

igorpadykov — Mon, 30 Aug 2021 06:05:53 GMT

seems i.MX8M Plus is the same as i.MX8MQ.

Best regards
igor

Re: About imx8mplus USB Certification

t2865k5 — Tue, 31 Aug 2021 02:26:18 GMT

Dear NXP ,

It explains USB2.0 test eye diagram mode for Type A in page 189.

I didn't find the USB3.0 test eye pattern for Type A. Can you tell me how to set ?

Re: About imx8mplus USB Certification

t2865k5 — Wed, 01 Sep 2021 10:12:28 GMT

Dear NXP ,

I want to output USB 3.0 partern for TYPE A .

About USB3.0 Host mode for TYPE A in page 187.

TX:

echo -1 > /sys/module/usbcore/parameters/autosuspend

echo "host" >> /sys/kernel/debug/usb/38100000.dwc3/mode

/unit_tests/memtool -32 0x38200430=0x0A010340

Test Results:
Instrument: No USB waveform measured

Re: About imx8mplus USB Certification

t2865k5 — Mon, 06 Sep 2021 03:58:04 GMT

Dear NXP ,

I have been waiting for your reply for a long time. Please reply to me as soon as possible.