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Subject[PATCH V9 4/4] arm64: dts: imx: add i.MX8QXP thermal support
Date
Add i.MX8QXP CPU thermal zone support.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
Changes since V8:
- remove "#cooling-cells" since it is already included in cpu-freq opp table patch:
https://patchwork.kernel.org/patch/10825081/
---
arch/arm64/boot/dts/freescale/imx8qxp.dtsi | 34 ++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
index 4c3dd95..85c90e0 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 = <0>;
+ 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>;
+ };
+ };
+ };
+ };
};
--
2.7.4
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