ARM: dts: am57xx-beagle-x15: Add thermal map to include fan and tmp102

BeagleBoard-X15 has capability for a fan and has an onboard TMP102
temperature sensor as well. This allows us to create a new thermal
zone (called, un-imaginatively "board"), and allows us to use some
active cooling as temperatures start edge upward in the system by
creating a new alert temperature (emperically 50C) for cpu.

NOTE: Fan is NOT mounted by default on the platform, in such a case,
all we end up doing is switch on a regulator and leak very minimal
current.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

2 files changed, 51 insertions, 2 deletions

diff --git a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts
index 03750af3b49a..ae83a812d8a6 100644
--- a/arch/arm/boot/dts/am57xx-beagle-x15.dts
+++ b/arch/arm/boot/dts/am57xx-beagle-x15.dts
@@ -87,6 +87,7 @@
                 gpios =  <&tps659038_gpio 1 GPIO_ACTIVE_HIGH>;
                 gpio-fan,speed-map = <0     0>,
                                      <13000 1>;
+                #cooling-cells = <2>;
         };
 
         extcon_usb1: extcon_usb1 {
@@ -442,6 +443,7 @@
                 pinctrl-0 = <&tmp102_pins_default>;
                 interrupt-parent = <&gpio7>;
                 interrupts = <16 IRQ_TYPE_LEVEL_LOW>;
+                #thermal-sensor-cells = <1>;
         };
 };
 
@@ -560,3 +562,50 @@
 &usb2 {
         dr_mode = "peripheral";
 };
+
+&cpu_trips {
+        cpu_alert1: cpu_alert1 {
+                temperature = <50000>; /* millicelsius */
+                hysteresis = <2000>; /* millicelsius */
+                type = "active";
+        };
+};
+
+&cpu_cooling_maps {
+        map1 {
+                trip = <&cpu_alert1>;
+                cooling-device = <&gpio_fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+        };
+};
+
+&thermal_zones {
+        board_thermal: board_thermal {
+                polling-delay-passive = <1250>; /* milliseconds */
+                polling-delay = <1500>; /* milliseconds */
+
+                                /* sensor       ID */
+                thermal-sensors = <&tmp102     0>;
+
+                board_trips: trips {
+                        board_alert0: board_alert {
+                                temperature = <40000>; /* millicelsius */
+                                hysteresis = <2000>; /* millicelsius */
+                                type = "active";
+                        };
+
+                        board_crit: board_crit {
+                                temperature = <105000>; /* millicelsius */
+                                hysteresis = <0>; /* millicelsius */
+                                type = "critical";
+                        };
+                };
+
+                board_cooling_maps: cooling-maps {
+                        map0 {
+                                trip = <&board_alert0>;
+                                cooling-device =
+                                  <&gpio_fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+                        };
+                };
+       };
+};
diff --git a/arch/arm/boot/dts/omap4-cpu-thermal.dtsi b/arch/arm/boot/dts/omap4-cpu-thermal.dtsi
index cb9458feb2e3..ab7f87ae96f0 100644
--- a/arch/arm/boot/dts/omap4-cpu-thermal.dtsi
+++ b/arch/arm/boot/dts/omap4-cpu-thermal.dtsi
@@ -18,7 +18,7 @@ cpu_thermal: cpu_thermal {
                         /* sensor       ID */
         thermal-sensors = <&bandgap     0>;
 
-        trips {
+        cpu_trips: trips {
                 cpu_alert0: cpu_alert {
                         temperature = <100000>; /* millicelsius */
                         hysteresis = <2000>; /* millicelsius */
@@ -31,7 +31,7 @@ cpu_thermal: cpu_thermal {
                 };
         };
 
-        cooling-maps {
+        cpu_cooling_maps: cooling-maps {
                 map0 {
                         trip = <&cpu_alert0>;
                         cooling-device =