On Mon, Nov 25, 2019 at 11:52 AM Robin Murphy <robin.murphy@xxxxxxx> wrote: > > Hi Peter, > > On 25/11/2019 4:28 pm, Peter Geis wrote: > > Good Morning, > > > > Another issue I've come across while testing PCIE on the rockpro64. > > When a PCIE device is inserted into the board, and it enumerates > > successfully, the board will not reset. > > I've tried various states of u-boot-rockchip, u-boot-mainline, with > > both miniloader and TPL/SPL. > > In case it's relevant, what particular PCIe device(s) have you seen the > issue with? FWIW I've been running a Samsung 960 Evo NVMe in my > NanoPC-T4 with mainline kernels for months now and it's always rebooted > flawlessly. > > Robin. Currently with a I350 NIC, but also observed with a pcie switch, and the GTX645. The NIC works, while the other two didn't without the patch to hijack the error handler. I am running the latest atf built from their github. > > > With miniloader and both variants of u-boot, if you attempt a reboot > > it never fires the "reboot: Restarting system" message. > > If you trigger a sysrq reboot at this stage, it will reboot, but fails > > to start up the two a72 cores and subsequently hangs a second later > > when it loads the first dma driver. > > > > With TPL/SPL on mainline-u-boot (I can't get rockchip-u-boot to work > > with TPL/SPL), it fires the "reboot: Restarting system" message, but > > never reboots. > > sysrq does not function at this point. > > > > I believe the pcie controller is not being halted, and gets stuck in a > > loop with the two a72 cores. > > > > _______________________________________________ > > Linux-rockchip mailing list > > Linux-rockchip@xxxxxxxxxxxxxxxxxxx > > http://lists.infradead.org/mailman/listinfo/linux-rockchip > > _______________________________________________ Linux-rockchip mailing list Linux-rockchip@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-rockchip
