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From: Biju Das <biju.das@bp.renesas.com>
To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>
Cc: Biju Das <biju.das@bp.renesas.com>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Simon Horman <horms@verge.net.au>,
	Magnus Damm <magnus.damm@gmail.com>,
	linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org,
	Chris Paterson <Chris.Paterson2@renesas.com>,
	Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Subject: [PATCH 1/2] arm64: dts: renesas: r8a774c0: Create thermal zone to support IPA
Date: Fri, 13 Sep 2019 09:50:07 +0100
Message-ID: <1568364608-46548-1-git-send-email-biju.das@bp.renesas.com> (raw)

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: Biju Das <biju.das@bp.renesas.com>
---
 arch/arm64/boot/dts/renesas/r8a774c0.dtsi | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/renesas/r8a774c0.dtsi b/arch/arm64/boot/dts/renesas/r8a774c0.dtsi
index a1c2de9..764df4c 100644
--- a/arch/arm64/boot/dts/renesas/r8a774c0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774c0.dtsi
@@ -73,6 +73,7 @@
 			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 @@
 	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";
+				};
 			};
 		};
 	};
-- 
2.7.4


             reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-13  8:50 Biju Das [this message]
2019-09-13  8:50 ` [PATCH 2/2] arm64: dts: renesas: r8a774c0: Add dynamic power coefficient Biju Das
2019-09-13 10:49   ` Simon Horman
2019-09-16  7:42   ` Geert Uytterhoeven
2019-09-13 10:49 ` [PATCH 1/2] arm64: dts: renesas: r8a774c0: Create thermal zone to support IPA Simon Horman
2019-09-16  7:41 ` Geert Uytterhoeven

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