topic How to enable MINI-PCIe slot support in i.MX Processors

How to enable MINI-PCIe slot support

venkatesh_dyaga — Wed, 18 Sep 2019 11:02:36 GMT

Hi all,

We use IMX6SLEVK. Linux Host driver built with fsl-community-bsp. Distro is framebuffer. We want to use PCIe slot and tried different PCI slot in kernel configuration combinations.

lspci is not showing any devices.

Please tell us the required kernel config.

Thanks

Re: How to enable MINI-PCIe slot support

igorpadykov — Wed, 18 Sep 2019 23:38:47 GMT

Hi venkatesh

for kernel configurations one can look on

i.MX6Q PCIe EP/RC Validation System

and linux documentation (Linux Manual, PCIe Chapter) on i.MX Software | NXP

may be useful to check

IMX6Q: Linux boot halts at PCIe config space read

Best regards
igor
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Re: How to enable MINI-PCIe slot support

venkatesh_dyaga — Fri, 20 Sep 2019 12:59:20 GMT

Hi igor,

I followed the links above and changed configurations but it is not detecting any.

Please find attachments and tell us issue

kernel dmesg prints file imx6slevk_kernel_log

kernel configuration file(.config) imx6slevk_kernel_config

Thanks

Re: How to enable MINI-PCIe slot support

igorpadykov — Fri, 20 Sep 2019 23:37:23 GMT

Hi venkatesh

fsl-community-bsp is not supported by nxp, please try nxp official linux

from source.codeaurora.org/external/imx/linux-imx repository:

linux-imx - i.MX Linux kernel
Linux Documentation
https://www.nxp.com/design/i.mx-developer-resources/i.mx-software-and-development-tool:IMX-SW

Best regards
igor

Re: How to enable MINI-PCIe slot support

venkatesh_dyaga — Sat, 21 Sep 2019 09:57:26 GMT

Hi igor,

I have attached the logs of yocto build with imx-yocto-bsp only in the previous reply and i forgot to mention that , Please look into that and let me know.

Thanks,

venkatesh

Re: How to enable MINI-PCIe slot support

igorpadykov — Sat, 21 Sep 2019 10:40:30 GMT

imx6slevk_kernel_log.zip log is empty. Please rebuild all from scratch

and attach full log, including uboot and kernel, without cuttings.

Best regards
igor

Re: How to enable MINI-PCIe slot support

venkatesh_dyaga — Mon, 23 Sep 2019 05:51:30 GMT

Hi,

I am so sorry that I wasted your time. Please find attached kernel boot prints in imx6slevk_kernel_dmesg. Please see and let us know the configuration(imx6slevk_kernel_config) issue.

Thanks

Re: How to enable MINI-PCIe slot support

igorpadykov — Mon, 23 Sep 2019 06:17:09 GMT

Hi venkatesh

I am very sorry that first did not notice that, but i.MX6SL has not PCIe module.

EVK has MINI PCI EXPRESS connector but only usb signals are used for

attaching modem. May be useful to look at i.MX comparison table

https://www.nxp.com/docs/en/brochure/FLYRIMXPRDCMPR.pdf

Best regards
igor

Re: How to enable MINI-PCIe slot support

venkatesh_dyaga — Mon, 23 Sep 2019 06:28:09 GMT

Yes. We are using Qualcomm card. It is currently inserted into MINI-PCIe slot.

Unfortunately we don't have any other card.

Thanks