Hi, Thanks for sending a new series On Wed, Jul 08, 2020 at 04:25:05PM +0800, Frank Lee wrote: > + thermal-zones { > + cpu_thermal_zone { > + polling-delay-passive = <0>; > + polling-delay = <0>; > + thermal-sensors = <&ths 0>; > + }; > + > + gpu_thermal_zone { > + polling-delay-passive = <0>; > + polling-delay = <0>; > + thermal-sensors = <&ths 1>; > + }; > + > + ddr_thermal_zone { > + polling-delay-passive = <0>; > + polling-delay = <0>; > + thermal-sensors = <&ths 2>; > + }; > + }; > +}; The node names shouldn't have any underscore, otherwise it will generate a DTC warning. Maxime