tree f7bc0618893972b87555996306d1bf7cde471112
parent b74a193852979fcc3dffabbe3153d0f069514400
author Andrey Skvortsov <andrej.skvortzov@gmail.com> 1684075952 +0300
committer Andrey Skvortsov <Andrej.Skvortzov@gmail.com> 1690833330 +0200

feat(allwinner): use reset through scpi for warm/soft reset

On systems with SCP (running crust) scpi_system_reboot action
performs board-level (PMIC) reboot. This doesn't preserve RAM content
on A64 PinePhone at least.

warm/soft system reset without RAM reset is required to get
pstore (persistent storage) in RAM working with Linux kernel. That is
very useful for oops/panic logging for post mortem analysis.

scpi_system_reset action performs reset via SoC reset (using watchdog)
and RAM content is preserved in this case. Linux kernel detects
system_reset2 support and uses it for warm reset automatically.

Change-Id: I1c21aa8f27c8e0395e2326034788693b59b80bc4
Signed-off-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>