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.
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
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