EIM problem on 4.1.15 kernel

lucaschettini — Thu, 07 Sep 2017 15:42:25 GMT

Hi,

we have a custom board based on iMX6 Q and D

We've few kernel modules, successfully compiled with both kernel 4.1.15 (on Ubuntu 16.04) and 3.14.54 (on Yocto Jethro).
These modules use EIM for comunicate with an FPGA connected to the EIM bus.

On 3.14.54 all works fine, but on 4.1.15 when I read data from EIM, I receive a static response data.

Correct data from 3.14.54:

FirmwareVersion: [b014] 45076
BuildYear: [2016] 8214
BuildMonthDay: [1027] 4135
BuildTime: [1130] 4400

Static data from 4.1.15:

FirmwareVersion: [2840] 10304
BuildYear: [2840] 10304
BuildMonthDay: [2840] 10304
BuildTime: [2840] 10304

If make a dump with a debugger on the corresponding virtual address, there are the same incorrect values at every EIM mapped address.

Are there changes from 3.14.54 to 4.1.15 EIM kernel implementation?
Have you an idea or suggestion?

TY
Luca

Re: EIM problem on 4.1.15 kernel

igorpadykov — Thu, 07 Sep 2017 23:15:47 GMT

Hi Luca

please try linux bsps descibed on nxp official i.mx page (use image

for sabre ai board which supports parallel nor)

http://www.nxp.com/products/software-and-tools/software-development-tools/i.mx-software-and-tools/i.mx-6series-i.mx-7series-software-and-development-tool-resources:IMX_SW

Best regards
igor
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EIM problem on 4.1.15 kernel

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