topic Re: problem with ENET_ATVR in i.MX Processors

problem with ENET_ATVR

masashiwakatsuk — Mon, 15 Aug 2016 05:27:46 GMT

Hi.

I 'm using iMX6Q evaluation board (not made by NXP) and trying to use IEEE1588 feature, but it does'nt work.

I checked registers of ENET.

I set the register [CAPTURE](adrs: 0218_8400 bit 11) "1", and checked the register [ATIME](adrs: 0218_8404),
but value of [ATIME] is always "0".

So, I think there is something wrong with register setting of internal clock of ENET.
Could you give me a advice of possible cause?
(With this board, ethernet itself does work.)

I have iMX6 SABLE board too, and it has no problem.
(by setting CAPUTRE register, i can get ATIME value)

Thank you.

Re: problem with ENET_ATVR

gusarambula — Wed, 24 Aug 2016 16:33:25 GMT

Hello Masashi Wakatsuki,

I would recommend reviewing the board schematic first as in order to use IEEE 1588 you would need to configure GPIO_16 ball as either a NC or Driven by an external clock source for the time stamp. For more information please refer to the i.MX6 HW Design Guide.

http://www.nxp.com/files/32bit/doc/user_guide/IMX6DQ6SDLHDG.pdf

Since you’re making it work correctly on the i.MX6 SABRE I would say it may be a design limitation of the new board. Please let us know of your findings!

Regards,

Re: problem with ENET_ATVR

masashiwakatsuk — Thu, 08 Sep 2016 00:28:23 GMT

Thank you for your reply.

I use NITROGEN6 board.
https://boundarydevices.com/product/nitrogen6x-board-imx6-arm-cortex-a9-sbc/

By default GPIO_16 is not NC, so I configured GPIO_16 ball as a NC by removing mounted resister .
But internal timestamp clock doesn't seem to work.
(Ethernet itself does work.)

Is there any register setting or procedure?

Thank you.