add a basic cpu thermal-zone on rk3066/bqcurie2

mmind · Aug 28, 2014 · c07e02f · c07e02f
1 parent e2eec14
commit c07e02f
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diff --git a/arch/arm/boot/dts/rk3066a-bqcurie2.dts b/arch/arm/boot/dts/rk3066a-bqcurie2.dts
@@ -58,6 +58,42 @@
 		};
 		/* VOL+ comes somehow thru the ADC */
 	};
+
+	iio_hwmon {
+		compatible = "iio-hwmon";
+		io-channels = <&saradc 0>, <&saradc 1>, <&saradc 2>;
+	};
+
+	cpu_temp: iio-thermal {
+		compatible = "iio-thermal";
+		io-channels = <&tsadc 0>;
+		conversion-method = "interpolation";
+		conversion-values = <
+			2088 398150
+			2218 318150
+			2238 303150
+			2244 298150
+			2319 233150
+		>;
+		#thermal-sensor-cells = <0>;
+	};
+
+	thermal-zones {
+		cpu_thermal: cpu-thermal {
+			polling-delay-passive = <250>;
+			polling-delay = <1000>;
+
+			thermal-sensors = <&cpu_temp>;
+
+			trips {
+				core_crit: core_crit {
+					temperature = <125000>; /* milliCelsius */
+					hysteresis = <2000>; /* milliCelsius */
+					type = "critical";
+				};
+			};
+		};
+	};
 };
 
 &i2c1 {
@@ -168,6 +204,16 @@
 	disable-wp;
 };
 
+&saradc {
+	status = "okay";
+	vref-supply = <&vcc_25>;
+};
+
+&tsadc {
+	status = "okay";
+	vref-supply = <&vcc_25>;
+};
+
 &uart0 {
 	status = "okay";
 };

diff --git a/arch/arm/boot/dts/rk3066a.dtsi b/arch/arm/boot/dts/rk3066a.dtsi
@@ -86,6 +86,16 @@
 		clock-names = "timer", "pclk";
 	};
 
+	tsadc: saradc@20060000 {
+		compatible = "rockchip,rk3066-tsadc";
+		reg = <0x20060000 0x100>;
+		interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
+		#io-channel-cells = <1>;
+		clocks = <&cru SCLK_TSADC>, <&cru PCLK_TSADC>;
+		clock-names = "saradc", "apb_pclk";
+		status = "disabled";
+	};
+
 	pinctrl: pinctrl {
 		compatible = "rockchip,rk3066a-pinctrl";
 		rockchip,grf = <&grf>;