ARM: dts: sun7i: Add cpu thermal zones to dtsi

The core temperature sensor now supports thermal zones. Add a thermal
zone mapping for the cpus with passive cooling (cpufreq throttling).

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
index beb0b7f6464c..929630aee299 100644
--- a/arch/arm/boot/dts/sun7i-a20.dtsi
+++ b/arch/arm/boot/dts/sun7i-a20.dtsi
@@ -50,6 +50,7 @@
 #include "skeleton.dtsi"
 
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/thermal/thermal.h>
 
 #include <dt-bindings/dma/sun4i-a10.h>
 #include <dt-bindings/pinctrl/sun4i-a10.h>
@@ -133,6 +134,38 @@
                 };
         };
 
+        thermal-zones {
+                cpu_thermal {
+                        /* milliseconds */
+                        polling-delay-passive = <250>;
+                        polling-delay = <1000>;
+                        thermal-sensors = <&rtp>;
+
+                        cooling-maps {
+                                map0 {
+                                        trip = <&cpu_alert0>;
+                                        cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+                                };
+                        };
+
+                        trips {
+                                cpu_alert0: cpu_alert0 {
+                                        /* milliCelsius */
+                                        temperature = <75000>;
+                                        hysteresis = <2000>;
+                                        type = "passive";
+                                };
+
+                                cpu_crit: cpu_crit {
+                                        /* milliCelsius */
+                                        temperature = <100000>;
+                                        hysteresis = <2000>;
+                                        type = "critical";
+                                };
+                        };
+                };
+        };
+
         memory {
                 reg = <0x40000000 0x80000000>;
         };