topic Re: IMX6 Sabresdb PCIe EP problem in i.MX Processors

IMX6 Sabresdb PCIe EP problem

rehankhan — Fri, 06 Feb 2015 09:53:29 GMT

HI,

I am facing problem in enabling PCIe support on my sabresdb imx6 board. Following are my kernel config and booting logs. I want to enable EP PCIe mode in kernel

1) Attaching kernel config file

kernel version is linux-2.6-imx-imx_3.10.53_1.1.0_ga/.

2) Boot Log

Attaching boot log file.

What could be the reason for following error

imx6q-pcie 1ffc000.pcie: lvds_gate clock select missing or invalid

imx6q-pcie: probe of 1ffc000.pcie failed with error -2

Please help

Regards,

Rehan Khan

Original Attachment has been moved to: config.zip

Original Attachment has been moved to: log.txt.zip

Re: IMX6 Sabresdb PCIe EP problem

Yuri — Mon, 16 Feb 2015 06:14:24 GMT

Strictly speaking, the i.MX6 Linux supports only PCIe RC mode.
As stated in the next thread,

“PCIe host controller driver in 3.10.17 kernel”

https://community.freescale.com/message/423867#423867

“Did you enable RC or EP option in the kernel configuration when build the kernel image?

These two options are only used in imx6 pcie ep/rc validation system, please disable them
if they are enabled in your kernel configuration. Otherwise, imx6 pcie wouldn't work properly.”

The next is link for “i.MX6Q PCIe EP/RC Validation System” thread :

https://community.freescale.com/docs/DOC-95014

Have a great day,
Yuri

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Re: IMX6 Sabresdb PCIe EP problem

rehankhan — Mon, 09 Mar 2015 15:55:34 GMT

Hi,

So I assume that we cannot use IMX6 in PCIe EP mode. Will we get further support on this issue?