[PATCH v3] arm64: dts: fsl: imx8mq: enable the multi sensor TMU

Angus Ainslie (Purism) angus at akkea.ca
Tue Mar 19 08:10:09 PDT 2019


Add the imx8mq TMU (Thermal management unit) nodes for CPU,
GPU, and VPU.

Changes since v2:

Updated alert and critical temps for commercial parts.
Fixed node names.

Changes since v1:

Removed references to multi sensor patch.

Signed-off-by: Angus Ainslie (Purism) <angus at akkea.ca>
---
 arch/arm64/boot/dts/freescale/imx8mq.dtsi | 118 ++++++++++++++++++++++
 1 file changed, 118 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
index 9155bd4784eb..83c0187e1524 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
@@ -8,6 +8,7 @@
 #include <dt-bindings/power/imx8mq-power.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/thermal/thermal.h>
 #include "imx8mq-pinfunc.h"
 
 / {
@@ -89,6 +90,7 @@
 			reg = <0x0>;
 			enable-method = "psci";
 			next-level-cache = <&A53_L2>;
+			#cooling-cells = <2>;
 		};
 
 		A53_1: cpu at 1 {
@@ -97,6 +99,7 @@
 			reg = <0x1>;
 			enable-method = "psci";
 			next-level-cache = <&A53_L2>;
+			#cooling-cells = <2>;
 		};
 
 		A53_2: cpu at 2 {
@@ -105,6 +108,7 @@
 			reg = <0x2>;
 			enable-method = "psci";
 			next-level-cache = <&A53_L2>;
+			#cooling-cells = <2>;
 		};
 
 		A53_3: cpu at 3 {
@@ -113,6 +117,7 @@
 			reg = <0x3>;
 			enable-method = "psci";
 			next-level-cache = <&A53_L2>;
+			#cooling-cells = <2>;
 		};
 
 		A53_L2: l2-cache0 {
@@ -210,6 +215,119 @@
 				#interrupt-cells = <2>;
 			};
 
+			tmu: tmu at 30260000 {
+				compatible = "fsl,imx8mq-tmu";
+				reg = <0x30260000 0x10000>;
+				interrupt = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
+				little-endian;
+				fsl,tmu-range = <0xb0000 0xa0026 0x80048 0x70061>;
+				fsl,tmu-calibration = <0x00000000 0x00000023
+						       0x00000001 0x00000029
+						       0x00000002 0x0000002f
+						       0x00000003 0x00000035
+						       0x00000004 0x0000003d
+						       0x00000005 0x00000043
+						       0x00000006 0x0000004b
+						       0x00000007 0x00000051
+						       0x00000008 0x00000057
+						       0x00000009 0x0000005f
+						       0x0000000a 0x00000067
+						       0x0000000b 0x0000006f
+
+						       0x00010000 0x0000001b
+						       0x00010001 0x00000023
+						       0x00010002 0x0000002b
+						       0x00010003 0x00000033
+						       0x00010004 0x0000003b
+						       0x00010005 0x00000043
+						       0x00010006 0x0000004b
+						       0x00010007 0x00000055
+						       0x00010008 0x0000005d
+						       0x00010009 0x00000067
+						       0x0001000a 0x00000070
+
+						       0x00020000 0x00000017
+						       0x00020001 0x00000023
+						       0x00020002 0x0000002d
+						       0x00020003 0x00000037
+						       0x00020004 0x00000041
+						       0x00020005 0x0000004b
+						       0x00020006 0x00000057
+						       0x00020007 0x00000063
+						       0x00020008 0x0000006f
+
+						       0x00030000 0x00000015
+						       0x00030001 0x00000021
+						       0x00030002 0x0000002d
+						       0x00030003 0x00000039
+						       0x00030004 0x00000045
+						       0x00030005 0x00000053
+						       0x00030006 0x0000005f
+						       0x00030007 0x00000071>;
+				#thermal-sensor-cells =  <1>;
+			};
+
+			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 {
+							temperature = <90000>;
+							hysteresis = <2000>;
+							type = "critical";
+						};
+					};
+
+					cooling-maps {
+						map0 {
+							trip = <&cpu_alert>;
+							cooling-device =
+								<&A53_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+								<&A53_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+								<&A53_2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+								<&A53_3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+						};
+					};
+				};
+
+				gpu-thermal {
+					polling-delay-passive = <250>;
+					polling-delay = <2000>;
+					thermal-sensors = <&tmu 1>;
+
+					trips {
+						gpu-crit {
+							temperature = <90000>;
+							hysteresis = <2000>;
+							type = "critical";
+						};
+					};
+				};
+
+				vpu-thermal {
+					polling-delay-passive = <250>;
+					polling-delay = <2000>;
+					thermal-sensors = <&tmu 2>;
+
+					trips {
+						vpu-crit {
+							temperature = <90000>;
+							hysteresis = <2000>;
+							type = "critical";
+						};
+					};
+				};
+			};
+
 			wdog1: watchdog at 30280000 {
 				compatible = "fsl,imx8mq-wdt", "fsl,imx21-wdt";
 				reg = <0x30280000 0x10000>;
-- 
2.17.1




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