Regression: 442ec4c04d1: PCI: dwc: all: Split struct pcie_port into host-only and core structures
Fabio Estevam
festevam at gmail.com
Tue May 9 03:21:24 PDT 2017
Hi Peter,
On Tue, May 9, 2017 at 3:34 AM, Peter Senna Tschudin
<peter.senna at collabora.com> wrote:
> Something that ocurred to me is that u-boot is initializing the PCI, and
> the PCI networkd cards. Ideally this should not affect anything, but
> can this be related to the issue?
Yes, in order to narrow things down: please boot 4.11 without PCI
support in U-Boot.
The problem is that mx6q does not have a way to properly reset the PCI block.
On the board I tested there is no PCI support in U-Boot.
Maybe we need the following approach in U-Boot as Lucas did for Barebox:
https://git.pengutronix.de/cgit/barebox/commit/?id=f1da98da2760c21487bbba8f7fb957c843a22896
According to this patch that went into 4.11 the bootloader must put
PCI back in a safe state:
https://patchwork.kernel.org/patch/9528911
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