On Fri, May 10, 2019 at 9:27 PM michael.kao <michael.kao@xxxxxxxxxxxx> wrote: > + > + tzts1: tzts1 { > + polling-delay-passive = <0>; > + polling-delay = <0>; > + thermal-sensors = <&thermal 1>; > + sustainable-power = <0>; > + trips {}; > + cooling-maps {}; > + }; > + Is 0 a valid initial sustainable-power setting? Since we'll still get warning[1] about this, though it might not be harmful. If 0 is a valid setting, maybe we should consider showing the warning of not setting this property in [2]? [1] https://elixir.bootlin.com/linux/latest/source/drivers/thermal/power_allocator.c#L570 [2] https://elixir.bootlin.com/linux/latest/source/drivers/thermal/of-thermal.c#L1049