[V10,4/4] arm64: dts: imx: add i.MX8QXP thermal support

Commit Message

Anson Huang Feb. 27, 2019, 8:46 a.m. UTC

Add i.MX8QXP CPU thermal zone support.

Signed-off-by: Anson Huang <[e-mail]>
---
Changes since V9:
	- change #thermal-sensor-cells value in to 1, since there are other
	  thermal sensors inside system controller, it is just because there are still
	  some issue, so system controller does NOT expose them for now, they could
	  be exposed later, so it should be 1 from HW perspective.
---
 arch/arm64/boot/dts/freescale/imx8qxp.dtsi | 34 ++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

Patch

diff --git a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
index 4c3dd95..f532cba 100644
--- a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
@@ -10,6 +10,7 @@ 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/pinctrl/pads-imx8qxp.h>
+#include <dt-bindings/thermal/thermal.h>
 
 / {
 	interrupt-parent = <&gic>;
@@ -116,6 +117,12 @@ 
 		rtc: rtc {
 			compatible = "fsl,imx8qxp-sc-rtc";
 		};
+
+		tsens: thermal-sensor {
+			compatible = "fsl,imx8qxp-sc-thermal", "fsl,imx-sc-thermal";
+			#thermal-sensor-cells = <1>;
+			imx,sensor-resource-id = <IMX_SC_R_SYSTEM>;
+		};
 	};
 
 	timer {
@@ -443,4 +450,31 @@ 
 			power-domains = <&pd IMX_SC_R_GPIO_7>;
 		};
 	};
+
+	thermal_zones: thermal-zones {
+		cpu-thermal0 {
+			polling-delay-passive = <250>;
+			polling-delay = <2000>;
+			thermal-sensors = <&tsens 0>;
+			trips {
+				cpu_alert0: trip0 {
+					temperature = <107000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+				cpu_crit0: trip1 {
+					temperature = <127000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+			cooling-maps {
+				map0 {
+					trip = <&cpu_alert0>;
+					cooling-device =
+						<&A35_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+		};
+	};
 };