On Fri, 7 Aug 2020 at 04:02, Konrad Dybcio [off-list ref] wrote:

Subject: Re: [PATCH v4] arm64: dts: qcom: Add support for Xiaomi Poco F1 (Beryllium)

quoted

// This removed_region is needed to boot the device
              // TODO: Find out the user of this reserved memory
              removed_region: memory@88f00000 {

This region seems to belong to the Trust Zone. When Linux tries to access it, TZ bites and shuts the device down.

That is totally possible. Plus it falls right in between TZ and QSEE
reserved-memory regions. However, I do not find any credible source
of information which can confirm this. So I'm hesitant to update the
TODO item in the above comment.

Konrad