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

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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>
This commit is contained in:
Nishanth Menon
2015-03-23 14:39:39 -05:00
committed by Tony Lindgren
parent f7397edf47
commit d723cfeafc
2 changed files with 51 additions and 2 deletions
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49
arch/arm/boot/dts/am57xx-beagle-x15.dts
View File

@ -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>;
};
};
};
};

4
arch/arm/boot/dts/omap4-cpu-thermal.dtsi
View File

@ -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 =