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| author | Emanuele Ghidoli <emanuele.ghidoli@toradex.com> | 2026-01-30 08:11:35 +0100 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2026-01-30 20:39:37 +0100 |
| commit | 562357a6310f79e45844c3e980d410a1e8e02ce6 (patch) | |
| tree | 70d08ce63ed0354c6aaec7453a1c2e0f528b5c24 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 432b119ab8d8bf1f550c247f7fbe960e87ba6c92 (diff) | |
| download | linux-562357a6310f79e45844c3e980d410a1e8e02ce6.tar.gz linux-562357a6310f79e45844c3e980d410a1e8e02ce6.zip | |
power: reset: tdx-ec-poweroff: fix restart
During testing, restart occasionally failed on Toradex modules.
The issue was traced to an interaction between the EC-based reset/poweroff
handler and the PSCI restart handler. While the embedded controller is
resetting or powering off the module, the PSCI code may still be invoked,
triggering an I2C transaction to the PMIC. This can leave the PMIC I2C
in a frozen state.
Add a delay after issuing the EC reset or power-off command to give the
controller time to complete the operation and avoid falling back to another
restart/poweroff provider.
Also print an error message if sending the command to the embedded controller
fails.
Fixes: 18672fe12367 ("power: reset: add Toradex Embedded Controller")
Cc: stable@vger.kernel.org
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://patch.msgid.link/20260130071208.1184239-1-ghidoliemanuele@gmail.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions