linux-kernel - [PATCH 1/2] arm64: dts: rockchip: add thermal infrastructure to px30

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Message-Id: <20191116095249.31193-1-heiko@sntech.de>
Date:   Sat, 16 Nov 2019 10:52:48 +0100
From:   Heiko Stuebner <heiko@...ech.de>
To:     linux-rockchip@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        christoph.muellner@...obroma-systems.com, heiko@...ech.de,
        Heiko Stuebner <heiko.stuebner@...obroma-systems.com>
Subject: [PATCH 1/2] arm64: dts: rockchip: add thermal infrastructure to px30

From: Heiko Stuebner <heiko.stuebner@...obroma-systems.com>

Add tsadc and necessary connections to core px30 components.

Signed-off-by: Heiko Stuebner <heiko.stuebner@...obroma-systems.com>
---
 arch/arm64/boot/dts/rockchip/px30.dtsi | 71 ++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/px30.dtsi b/arch/arm64/boot/dts/rockchip/px30.dtsi
index c9cb73ba7bec..c68d6fede53d 100644
--- a/arch/arm64/boot/dts/rockchip/px30.dtsi
+++ b/arch/arm64/boot/dts/rockchip/px30.dtsi
@@ -10,6 +10,7 @@
 #include <dt-bindings/pinctrl/rockchip.h>
 #include <dt-bindings/power/px30-power.h>
 #include <dt-bindings/soc/rockchip,boot-mode.h>
+#include <dt-bindings/thermal/thermal.h>
 
 / {
 	compatible = "rockchip,px30";
@@ -181,6 +182,55 @@
 			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
 	};
 
+	thermal_zones: thermal-zones {
+		soc_thermal: soc-thermal {
+			polling-delay-passive = <20>;
+			polling-delay = <1000>;
+			sustainable-power = <750>;
+			thermal-sensors = <&tsadc 0>;
+
+			trips {
+				threshold: trip-point-0 {
+					temperature = <70000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				target: trip-point-1 {
+					temperature = <85000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				soc_crit: soc-crit {
+					temperature = <115000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+
+			cooling-maps {
+				map0 {
+					trip = <&target>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+					contribution = <4096>;
+				};
+
+				map1 {
+					trip = <&target>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+					contribution = <4096>;
+				};
+			};
+		};
+
+		gpu_thermal: gpu-thermal {
+			polling-delay-passive = <100>; /* milliseconds */
+			polling-delay = <1000>; /* milliseconds */
+			thermal-sensors = <&tsadc 1>;
+		};
+	};
+
 	xin24m: xin24m {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
@@ -645,6 +695,26 @@
 		};
 	};
 
+	tsadc: tsadc@...80000 {
+		compatible = "rockchip,px30-tsadc";
+		reg = <0x0 0xff280000 0x0 0x100>;
+		interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
+		assigned-clocks = <&cru SCLK_TSADC>;
+		assigned-clock-rates = <50000>;
+		clocks = <&cru SCLK_TSADC>, <&cru PCLK_TSADC>;
+		clock-names = "tsadc", "apb_pclk";
+		resets = <&cru SRST_TSADC>;
+		reset-names = "tsadc-apb";
+		rockchip,grf = <&grf>;
+		rockchip,hw-tshut-temp = <120000>;
+		pinctrl-names = "init", "default", "sleep";
+		pinctrl-0 = <&tsadc_otp_gpio>;
+		pinctrl-1 = <&tsadc_otp_out>;
+		pinctrl-2 = <&tsadc_otp_gpio>;
+		#thermal-sensor-cells = <1>;
+		status = "disabled";
+	};
+
 	saradc: saradc@...88000 {
 		compatible = "rockchip,px30-saradc", "rockchip,rk3399-saradc";
 		reg = <0x0 0xff288000 0x0 0x100>;
@@ -886,6 +956,7 @@
 			     <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
 		interrupt-names = "job", "mmu", "gpu";
 		clocks = <&cru SCLK_GPU>;
+		#cooling-cells = <2>;
 		power-domains = <&power PX30_PD_GPU>;
 		status = "disabled";
 	};
-- 
2.24.0