arm64: dts: imx8mp: Add thermal zones support

i.MX8MP has a TMU inside which supports two thermal zones, add support
for them.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index 9b1616e..77aff14 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -7,6 +7,7 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/thermal/thermal.h>
 
 #include "imx8mp-pinfunc.h"
 
@@ -43,6 +44,7 @@
                        clocks = <&clk IMX8MP_CLK_ARM>;
                        enable-method = "psci";
                        next-level-cache = <&A53_L2>;
+                       #cooling-cells = <2>;
                };
 
                A53_1: cpu@1 {
@@ -53,6 +55,7 @@
                        clocks = <&clk IMX8MP_CLK_ARM>;
                        enable-method = "psci";
                        next-level-cache = <&A53_L2>;
+                       #cooling-cells = <2>;
                };
 
                A53_2: cpu@2 {
@@ -63,6 +66,7 @@
                        clocks = <&clk IMX8MP_CLK_ARM>;
                        enable-method = "psci";
                        next-level-cache = <&A53_L2>;
+                       #cooling-cells = <2>;
                };
 
                A53_3: cpu@3 {
@@ -73,6 +77,7 @@
                        clocks = <&clk IMX8MP_CLK_ARM>;
                        enable-method = "psci";
                        next-level-cache = <&A53_L2>;
+                       #cooling-cells = <2>;
                };
 
                A53_L2: l2-cache0 {
@@ -127,6 +132,68 @@
                method = "smc";
        };
 
+       thermal-zones {
+               cpu-thermal {
+                       polling-delay-passive = <250>;
+                       polling-delay = <2000>;
+                       thermal-sensors = <&tmu 0>;
+                       trips {
+                               cpu_alert0: trip0 {
+                                       temperature = <85000>;
+                                       hysteresis = <2000>;
+                                       type = "passive";
+                               };
+
+                               cpu_crit0: trip1 {
+                                       temperature = <95000>;
+                                       hysteresis = <2000>;
+                                       type = "critical";
+                               };
+                       };
+
+                       cooling-maps {
+                               map0 {
+                                       trip = <&cpu_alert0>;
+                                       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>;
+                               };
+                       };
+               };
+
+               soc-thermal {
+                       polling-delay-passive = <250>;
+                       polling-delay = <2000>;
+                       thermal-sensors = <&tmu 1>;
+                       trips {
+                               soc_alert0: trip0 {
+                                       temperature = <85000>;
+                                       hysteresis = <2000>;
+                                       type = "passive";
+                               };
+
+                               soc_crit0: trip1 {
+                                       temperature = <95000>;
+                                       hysteresis = <2000>;
+                                       type = "critical";
+                               };
+                       };
+
+                       cooling-maps {
+                               map0 {
+                                       trip = <&soc_alert0>;
+                                       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>;
+                               };
+                       };
+               };
+       };
+
        timer {
                compatible = "arm,armv8-timer";
                interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
@@ -215,6 +282,13 @@
                                gpio-ranges = <&iomuxc 0 114 30>;
                        };
 
+                       tmu: tmu@30260000 {
+                               compatible = "fsl,imx8mp-tmu";
+                               reg = <0x30260000 0x10000>;
+                               clocks = <&clk IMX8MP_CLK_TSENSOR_ROOT>;
+                               #thermal-sensor-cells = <1>;
+                       };
+
                        wdog1: watchdog@30280000 {
                                compatible = "fsl,imx8mp-wdt", "fsl,imx21-wdt";
                                reg = <0x30280000 0x10000>;