linux-kernel - [PATCH 4/5] arm64: dts: rockchip: add thermal nodes for rk3328 SoC

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Message-Id: <1500973788-14627-5-git-send-email-rocky.hao@rock-chips.com>
Date:   Tue, 25 Jul 2017 17:09:47 +0800
From:   Rocky Hao <rocky.hao@...k-chips.com>
To:     rui.zhang@...el.com, edubezval@...il.com, heiko@...ech.de,
        robh+dt@...nel.org, mark.rutland@....com, catalin.marinas@....com,
        will.deacon@....com
Cc:     shawn.lin@...k-chips.com, cl@...k-chips.com,
        william.wu@...k-chips.com, linux-pm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, xxx@...k-chips.com,
        jay.xu@...k-chips.com, wxt@...k-chips.com, huangtao@...k-chips.com,
        rocky.hao@...k-chips.com
Subject: [PATCH 4/5] arm64: dts: rockchip: add thermal nodes for rk3328 SoC

add thermal zone and dynamic CPU power coefficients for rk3328

Change-Id: I227468506c0b978a0fd4dd9596631e026743910e
Signed-off-by: Rocky Hao <rocky.hao@...k-chips.com>
---
 arch/arm64/boot/dts/rockchip/rk3328.dtsi | 43 ++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
index 186fb93fdffd..68829f808320 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
@@ -47,6 +47,7 @@
 #include <dt-bindings/pinctrl/rockchip.h>
 #include <dt-bindings/power/rk3328-power.h>
 #include <dt-bindings/soc/rockchip,boot-mode.h>
+#include <dt-bindings/thermal/thermal.h>
 
 / {
 	compatible = "rockchip,rk3328";
@@ -74,6 +75,8 @@
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x0>;
 			clocks = <&cru ARMCLK>;
+			#cooling-cells = <2>; /* min followed by max */
+			dynamic-power-coefficient = <120>;
 			enable-method = "psci";
 			next-level-cache = <&l2>;
 		};
@@ -83,6 +86,7 @@
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x1>;
 			clocks = <&cru ARMCLK>;
+			dynamic-power-coefficient = <120>;
 			enable-method = "psci";
 			next-level-cache = <&l2>;
 		};
@@ -92,6 +96,7 @@
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x2>;
 			clocks = <&cru ARMCLK>;
+			dynamic-power-coefficient = <120>;
 			enable-method = "psci";
 			next-level-cache = <&l2>;
 		};
@@ -101,6 +106,7 @@
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x3>;
 			clocks = <&cru ARMCLK>;
+			dynamic-power-coefficient = <120>;
 			enable-method = "psci";
 			next-level-cache = <&l2>;
 		};
@@ -308,6 +314,43 @@
 		interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
 	};
 
+	thermal-zones {
+		soc_thermal: soc-thermal {
+			polling-delay-passive = <20>; /* milliseconds */
+			polling-delay = <1000>; /* milliseconds */
+			sustainable-power = <1000>; /* milliwatts */
+
+			thermal-sensors = <&tsadc 0>;
+
+			trips {
+				threshold: trip-point0 {
+					temperature = <70000>; /* millicelsius */
+					hysteresis = <2000>; /* millicelsius */
+					type = "passive";
+				};
+				target: trip-point1 {
+					temperature = <85000>; /* millicelsius */
+					hysteresis = <2000>; /* millicelsius */
+					type = "passive";
+				};
+				soc_crit: soc-crit {
+					temperature = <95000>; /* millicelsius */
+					hysteresis = <2000>; /* millicelsius */
+					type = "critical";
+				};
+			};
+
+			cooling-maps {
+				map0 {
+					trip = <&target>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+					contribution = <4096>;
+				};
+			};
+		};
+
+	};
+
 	tsadc: tsadc@...50000 {
 		compatible = "rockchip,rk3328-tsadc";
 		reg = <0x0 0xff250000 0x0 0x100>;
-- 
1.9.1