08-24-2020, 01:55 PM
(06-09-2020, 04:34 PM)timmes Wrote: lspci -vvv reports ASPM L2 is not supported. That could be a crucial difference with the NVMe SSD's that do not have this problem?
I'm seeing this issue as well with a WD SN550 250 GB SSD, similar to yours. From "lspci -vvv" it does look as though the drive supports only ASPM L1.
This is using Linux 5.7.15 (built from Guix's "wip-pinebook-pro" branch), along with mainline U-Boot 2020.07 and ATF v2.3.
On Linux 5.8.1, suspend-to-RAM crashes for me with an "Unhandled Exception in EL3" from the ATF. The register values it dumps indicate the reason for the exception is "unknown" and probably unrelated to the code being executed at the time (the entry to sram_func_set_ddrctl_pll(), invoked from plat/rockchip/rk3399/drivers/pmu/pmu.c:847), suggesting the exception arrived from an external source—possibly the memory subsystem? I note the code seems to be getting ready to switch the memory's clock source.
Has anyone made any progress towards getting suspend working on Linux 5.8?