hello pasindusandeep23,
it means the module temperature has reach the threshold (70C) to warn the user not touch the surface,
it’s a warning message, which is not functional or performance alert like clock throttling.
please see-also below for the settings,
$public_sources/r36.4.4/Linux_for_Tegra/source/kernel_src/hardware/nvidia/t23x/nv-public/nv-soc/tegra234-soc-thermal-trip-event.dtsi
#define TEGRA234_THERMAL_HOT_SURFACE_TEMP 70000
FYI, we don’t suggest to modify hot surface threshold since it may be subject to legal restrictions.
it’s able to configure the system to disable that message, you may see-also Topic 245538 for reference.