On Thursday, July 17, 2014 at 08:51:48 AM, Uwe Kleine-König wrote: > Hello, > > On Tue, Jun 24, 2014 at 04:18:27PM -0300, Fabio Estevam wrote: > > From: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx> > > > > When the mx6 PCI conctroller is initialized in the bootloader we see a > > kernel hang inside imx6_add_pcie_port(). > > > > Adding a 30ms delay allows the kernel to boot. > > Just my thought on how to debug that: I'd try to bisect the pci init > routine in the boot loader. I.e. first only do the first half of the > initialisation in U-Boot. Depending on Linux being able to boot or not > initialize more or less on the next run. > > Maybe there is a single register write that makes Linux fail?! I am still hell-bent on thinking that the missing PCIe block reset is what makes the Linux fail. Missing block reset is always a problem. Or do we now have a mean to reset the PCIe block and it's PHY from software? Best regards, Marek Vasut -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
