Setup a thermal zone driven by SoC temperature sensor. Create passive trip points and bind them to CPUFreq cooling device that supports power extension. Based on the work done by Dien Pham <dien.pham.ry@xxxxxxxxxxx> and others for r8a77990 SoC. Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx> --- This patch depend upon [1] [1] https://patchwork.kernel.org/project/linux-renesas-soc/list/?series=579123 --- arch/arm64/boot/dts/renesas/r9a07g044.dtsi | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi index b2d593ba07ad..d78fb375a622 100644 --- a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi +++ b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi @@ -87,6 +87,7 @@ compatible = "arm,cortex-a55"; reg = <0>; device_type = "cpu"; + #cooling-cells = <2>; next-level-cache = <&L3_CA55>; enable-method = "psci"; clocks = <&cpg CPG_CORE R9A07G044_CLK_I>; @@ -790,6 +791,15 @@ polling-delay-passive = <250>; polling-delay = <1000>; thermal-sensors = <&tsu 0>; + sustainable-power = <717>; + + cooling-maps { + map0 { + trip = <&target>; + cooling-device = <&cpu0 0 2>; + contribution = <1024>; + }; + }; trips { sensor_crit: sensor-crit { @@ -797,6 +807,12 @@ hysteresis = <1000>; type = "critical"; }; + + target: trip-point { + temperature = <100000>; + hysteresis = <1000>; + type = "passive"; + }; }; }; }; -- 2.17.1
