On 05/02/2019 18:24, Marc Gonzalez wrote: > /*** system hangs here for several seconds, then reboots ***/ Silly me. The system crashes in ufshcd_dump_regs() which is a bug I fixed myself. Once I cherry-pick the appropriate fix, the board no longer reboots, but UFS init does fail. Full boot log here: https://pastebin.ubuntu.com/p/KwpRnWMFw5/ In any case, it's obvious that disabling vccq on this system is a mistake. How would you solve the problem? (A quirk on top of a quirk sounds silly.) Regards.