EVMK2EX: Device at USB port-1 is not recognizable by K2E EVM at uboot

Pooja Gaur

Part Number: EVMK2EX

Hello,

We are using K2E EVM and want to access USB port-1 of EVM on uBoot but the attached device is not showing in the USB tree.

As USB port-0 is working fine and we are able to access device attached on USB port-0 on uboot.

so, we want to compare the K2E internal registers of these two USB ports at uboot.

As per datasheet - For USB-0 port - 0x02680000 and 0x02630000 address are needed to be read and for USB port-1 - 0x25000000 and 0x25080000 address.

but only USB port-0 address are showing data as per K2E USB 3.0 user guide but at USB-1 addresses we are getting all zeros.

so please let us know, are we looking for the right addresses for USB port-1?

Please suggest for the same.

Many Thanks

Pooja Gaur

over 7 years ago

0 Yordan Kovachev over 7 years ago

TI__Guru**** 161600 points

Hi,

Which SDK version are you using? Is this a linux sdk or rtos sdk?

Best Regards,
Yordan

0 Pooja Gaur over 7 years ago in reply to Yordan Kovachev

Prodigy 60 points

I am using LINUX,
U-boot version :
U-Boot 2017.01
arm-linux-gnueabihf-gcc (Linaro GCC 6.2-2016.11) 6.2.1 20161016
GNU ld (Linaro_Binutils-2016.11) 2.27.0.20161019

0 Yordan Kovachev over 7 years ago in reply to Pooja Gaur

TI__Guru**** 161600 points

Hi,

Try the following:

usb reset
usb start
usb dev 1

Best Regards,
Yordan

0 Pooja Gaur over 7 years ago in reply to Yordan Kovachev

Prodigy 60 points

Hi,

I had done this, but still its not working.

Do it need any change in dts also?

Please suggest.

0 Yordan Kovachev over 7 years ago in reply to Pooja Gaur

TI__Guru**** 161600 points

I forgot to mention, you need to have a usb storage device plugged in order for the u-boot to be able to start it. So you should plug in the usb drive and then start the usb1. Also make sure that u-boot initializes usb1 in the first place.

Best Regards,
Yordan

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EVMK2EX: Device at USB port-1 is not recognizable by K2E EVM at uboot