i.MX8M Mini Linux thermal zone action

[m_c]

May we have more detail actions (ex: lower frequency) if reach alert and critical temperature point?

 https://source.codeaurora.org/external/imx/linux-imx/tree/arch/arm64/boot/dts/freescale/fsl-imx8mm.d...

      thermal-zones {

           /* cpu thermal */

           cpu-thermal {

                 polling-delay-passive = <250>;

                 polling-delay = <2000>;

                 thermal-sensors = <&tmu>;

                 trips {

                       cpu_alert0: trip0 {

                             temperature = <85000>;

                             hysteresis = <2000>;

                             type = "passive";

                       };

                       cpu_crit0: trip1 {

                             temperature = <95000>;

                             hysteresis = <2000>;

                             type = "critical";

                       };

                 };

                 cooling-maps {

                       map0 {

                             trip = <&cpu_alert0>;

                             cooling-device =

                             <&A53_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;

                       };

                 };

           };

      };

[igorpadykov · Accepted solution]

Hi m.c.

seems details can be found only in sources of thermal drivers described in

sect.2.9.3 Source Code Structure attached Linux Manual.

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

[marcelziswiler]

BTW: Looks like later NXP BSP releases now do have such settings available in the regular device tree:

https://source.codeaurora.org/external/imx/linux-imx/tree/arch/arm64/boot/dts/freescale/imx8mm.dtsi?...