i.MX ProcessorsのトピックRe: PCIe host failed to come up on Sabre SD on kernel 3.14.28

PCIe host failed to come up on Sabre SD on kernel 3.14.28

olivierlebozec — Thu, 16 Apr 2015 09:05:59 GMT

Hi,

I'm using SabreSD REVC4. In this version I have PCI is disabled (by default) in Uboot as stated in similar topic.

I'm using fido branch of Freescale/fsl-community-bsp-platform · GitHub

I got the following traces at boot with PCIe card inserted or not :

...

[ 0.386353] imx6q-pcie 1ffc000.pcie: phy link never came up
[ 0.386368] imx6q-pcie 1ffc000.pcie: Failed to bring link up!
[ 0.386396] imx6q-pcie 1ffc000.pcie: failed to initialize host
[ 0.386437] imx6q-pcie: probe of 1ffc000.pcie failed with error -22
...

Error comes from /drivers/pci/host/pci-imx6.c.

It seems the workarround for the missing reset wire are included in both Uboot config and in pci-imx6.c.

Any ideas to bring PCIe up?

Best regards,

Olivier.

Original Attachment has been moved to: defconfig.zip

Re: PCIe host failed to come up on Sabre SD on kernel 3.14.28

olivierlebozec — Mon, 20 Apr 2015 12:49:11 GMT

Hi,

Using linux-fsl 3.19 and uboot-fsl solve the issue.

I think linux-imx 3.14 and uboot-imx doesn't work for PCIe. Maybe some HW initialization is missing in uboot.

My undestanding is Linux-fsl is the vanilla kernel form linux.org.

Linux-imx is the one provided by fresscale.

Am I wrong cause the name doesn"t match?

Best regards,

Olivier

Re: PCIe host failed to come up on Sabre SD on kernel 3.14.28

igorpadykov — Mon, 20 Apr 2015 16:02:09 GMT

Hi Olivier

please post this to meta-fsl-arm mailing list

https://lists.yoctoproject.org/listinfo/meta-freescale

difference between Community BSP and FSL BSPs

https://community.freescale.com/message/402940#402940

Best regards

igor

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