On 16/01/2024 13:37, Luca Weiss wrote:
On Tue Jan 16, 2024 at 12:59 PM CET, Daniel Lezcano wrote:
Running an Antutu benchmark makes the board to do a hard reboot.
Cause: it appears the gpu-bottom and gpu-top temperature sensors are showing
too high temperatures, above 115°C.
Out of tree configuratons show the gpu thermal zone is configured to
be mitigated at 85°C with devfreq.
Add the DT snippet to enable the thermal mitigation on the sdm845
based board.
Fixes: c79800103eb18 ("arm64: dts: sdm845: Add gpu and gmu device nodes")
Cc: Amit Pundir <amit.pundir@xxxxxxxxxx>
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
A part of this is already included with this patch:
https://lore.kernel.org/linux-arm-msm/20240102-topic-gpu_cooling-v1-4-fda30c57e353@xxxxxxxxxx/
Maybe rebase on top of that one and add the 85degC trip point or
something?
Actually, I think the patch is wrong.
The cooling effect does not operate on 'hot' trip point type as it is
considered as a critical trip point. The governor is not invoked, so no
mitigation happen. The 'hot' trip point type results in sending a
notification to userspace to give the last chance to do something before
'critical' is reached where the system is shut down.
I suggest to revert it and pick the one I proposed.
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