Commit 8438bfda authored by Biju Das's avatar Biju Das Committed by Geert Uytterhoeven
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arm64: dts: renesas: r8a774c0: Create thermal zone to support IPA 



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@renesas.com>
and others for r8a77990 SoC.

Signed-off-by: default avatarBiju Das <biju.das@bp.renesas.com>
Reviewed-by: default avatarSimon Horman <horms+renesas@verge.net.au>
Link: https://lore.kernel.org/r/1568364608-46548-1-git-send-email-biju.das@bp.renesas.com


Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
parent 28a1b34c

arch/arm64/boot/dts/renesas/r8a774c0.dtsi

+16 −3
Original line number Diff line number Diff line
@@ -73,6 +73,7 @@ a53_0: cpu@0 { 
			compatible = "arm,cortex-a53";

			reg = <0>;

			device_type = "cpu";

			#cooling-cells = <2>;

			power-domains = <&sysc R8A774C0_PD_CA53_CPU0>;

			next-level-cache = <&L2_CA53>;

			enable-method = "psci";
@@ -1905,18 +1906,30 @@ prr: chipid@fff00044 { 
	thermal-zones {

		cpu-thermal {

			polling-delay-passive = <250>;

			polling-delay = <1000>;

			thermal-sensors = <&thermal>;

			polling-delay = <0>;

			thermal-sensors = <&thermal 0>;

			sustainable-power = <717>;



			cooling-maps {

				map0 {

					trip = <&target>;

					cooling-device = <&a53_0 0 2>;

					contribution = <1024>;

				};

			};



			trips {

				cpu-crit {

				sensor1_crit: sensor1-crit {

					temperature = <120000>;

					hysteresis = <2000>;

					type = "critical";

				};



				target: trip-point1 {

					temperature = <100000>;

					hysteresis = <2000>;

					type = "passive";

				};

			};

		};

	};