On Wed, May 10, 2017 at 11:10 AM, Fabio Estevam festevam@gmail.com wrote:
Hi Tim,
Thanks for working on this!
[Adding Peter and Jagan on Cc]
On Wed, May 10, 2017 at 1:43 PM, Tim Harvey tharvey@gateworks.com wrote:
There is no dedicated reset signal wired up for the MX6QDL thus if the bootloader enables the link we need some special handling to get the core back into a state where it is safe to touch it for configuration.
While there has been some special handling in the Linux kernel to do this, it was removed in 4.11 thus we need to do it properly in the bootloader and therefore without this if you enable PCI in the bootloader you will hang while booting the 4.11 kernel.
This was tested on a Gateworks Ventana board.
TODO: what is the right arch specific place to hook the remove function?
Ideally the pcie_imx.c driver should be converted to driver model and then the .remove can be simply added, just like in Barebox.
Fabio,
Unfortunately converting the IMX PCI driver to DM is a cleanup effort that I'm not permitted the time to do.
Regards,
Tim