diff options
| author | Nishanth Menon <nm@ti.com> | 2015-03-23 22:39:39 +0300 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2015-03-26 22:02:12 +0300 |
| commit | d723cfeafc7b4c73e89ed3d4b1a4d747e990872c (patch) | |
| tree | c46ac09bac9f252764ffc5ec233c9b7e0ea3588c | |
| parent | f7397edf47ecc859fa69c15c4f9cefc8f2ee00c8 (diff) | |
| download | linux-d723cfeafc7b4c73e89ed3d4b1a4d747e990872c.tar.xz | |
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>
| -rw-r--r-- | arch/arm/boot/dts/am57xx-beagle-x15.dts | 49 | ||||
| -rw-r--r-- | arch/arm/boot/dts/omap4-cpu-thermal.dtsi | 4 |
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 = |