topic Re: Linux init overwrite iomux register in Vybrid Processors

Linux init overwrite iomux register

Nouchi — Tue, 25 Mar 2014 15:34:31 GMT

Hello,

At Linux boot time, after mvf_board_init(), IOMUXC_PTB8 is overwritten in my back by something between "io scheduler cfq" registration and console initialization.

Any ideas? It makes me insane.....

Emmabnuel

Re: Linux init overwrite iomux register

karina_valencia — Thu, 27 Mar 2014 22:12:59 GMT

timesyssupport can you attend this case?

Re: Linux init overwrite iomux register

timesyssupport — Fri, 28 Mar 2014 21:52:52 GMT

Hi Emmanuel,

What hardware were you using when you encountered this issue? Can you reproduce on the Vybrid Tower kit?

Thanks,

Timesys Support

Re: Linux init overwrite iomux register

Nouchi — Mon, 31 Mar 2014 07:50:48 GMT

Hello,

I'm using my own design based on TWR-VF65GS10 for most part, and autoEVB for Ethernet part. In my case PTB8 is used as FTM1 chan0 capture mode. I set IOMUX with 0x00101201, and at the end I get 0x0000219e.

At this moment, I don't have enough time to dig deeper, I will do it in few weeks, as workaround, M4 MQX application rewrite IOMUXC, dirty but it works.

Emmanuel