linux-kernel - [PATCH v5 3/5] arm64: dts: rockchip: add cooling map and trip points for gpu to rk356x

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Date:   Wed,  9 Feb 2022 09:51:08 +0100
From:   Michael Riesch <michael.riesch@...fvision.net>
To:     dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Frattaroli <frattaroli.nicolas@...il.com>,
        Michael Riesch <michael.riesch@...fvision.net>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Alex Bee <knaerzche@...il.com>, Liang Chen <cl@...k-chips.com>,
        Sascha Hauer <s.hauer@...gutronix.de>
Subject: [PATCH v5 3/5] arm64: dts: rockchip: add cooling map and trip points for gpu to rk356x

From: Alex Bee <knaerzche@...il.com>

RK356x SoCs have a second thermal sensor for the GPU. This adds the
cooling map and trip points for it to make use of its contribution as
a cooling device.

Signed-off-by: Alex Bee <knaerzche@...il.com>
Signed-off-by: Michael Riesch <michael.riesch@...fvision.net>
---
 arch/arm64/boot/dts/rockchip/rk356x.dtsi | 27 ++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk356x.dtsi b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
index 47484305b7a4..2334fed4620f 100644
--- a/arch/arm64/boot/dts/rockchip/rk356x.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
@@ -1093,6 +1093,33 @@ gpu_thermal: gpu-thermal {
 			polling-delay = <1000>; /* milliseconds */
 
 			thermal-sensors = <&tsadc 1>;
+
+			trips {
+				gpu_threshold: gpu-threshold {
+					temperature = <70000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+				gpu_target: gpu-target {
+					temperature = <75000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+				gpu_crit: gpu-crit {
+					temperature = <95000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+
+			cooling-maps {
+				map0 {
+					trip = <&gpu_target>;
+					cooling-device =
+						<&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
 		};
 	};
 
-- 
2.30.2