[PATCH v1 4/4] arm64: dts: imx93: Add CPU thermal zone

Alice Guo (OSS)
2023-01-05T10:19:38Z

From: Alice Guo <alice.guo@nxp.com>

Add CPU thermal zone and attach it to the TMU which monitors the CPU
temperature.

Signed-off-by: Alice Guo <alice.guo@nxp.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
---
arch/arm64/boot/dts/freescale/imx93.dtsi | 48 ++++++++++++++++++++++++
1 file changed, 48 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx93.dtsi b/arch/arm64/boot/dts/freescale/imx93.dtsi
index 6808321ed809..60306f3c5e7f 100644
--- a/arch/arm64/boot/dts/freescale/imx93.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93.dtsi
@@ -8,6 +8,7 @@
#include <dt-bindings/input/input.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/power/fsl,imx93-power.h>
+#include <dt-bindings/thermal/thermal.h>

#include "imx93-pinfunc.h"

@@ -116,6 +117,38 @@
interrupt-parent = <&gic>;
};

+ thermal-zones {
+ cpu-thermal {
+ polling-delay-passive = <250>;
+ polling-delay = <2000>;
+
+ thermal-sensors = <&tmu 0>;
+
+ trips {
+ cpu_alert: cpu-alert {
+ temperature = <80000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
+ cpu_crit: cpu-crit {
+ temperature = <90000>;
+ hysteresis = <2000>;
+ type = "critical";
+ };
+ };
+
+ cooling-maps {
+ map0 {
+ trip = <&cpu_alert>;
+ cooling-device =
+ <&A55_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&A55_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+ };
+ };
+
soc@0 {
compatible = "simple-bus";
#address-cells = <1>;
@@ -280,6 +313,21 @@
compatible = "fsl,imx93-anatop", "syscon";
reg = <0x44480000 0x10000>;
};
+
+ tmu: tmu@44482000 {
+ compatible = "fsl,imx93-tmu";
+ reg = <0x44482000 0x1000>;
+ clocks = <&clk IMX93_CLK_TMC_GATE>;
+ little-endian;
+ fsl,tmu-calibration = <0x0000000e 0x800000da
+ 0x00000029 0x800000e9
+ 0x00000056 0x80000102
+ 0x000000a2 0x8000012a
+ 0x00000116 0x80000166
+ 0x00000195 0x800001a7
+ 0x000001b2 0x800001b6>;
+ #thermal-sensor-cells = <1>;
+ };
};

aips2: bus@42000000 {
--
2.17.1