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authorLinus Torvalds <torvalds@linux-foundation.org>2015-11-11 02:06:26 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-11 02:06:26 +0300
commitc0d6fe2f01c475cc137d90607a07578586883df8 (patch)
tree361136e8c1f66aef29f468abbd08e65de6f2e654 /Documentation/devicetree/bindings/hwmon
parentb44a3d2a85c64208a57362a1728efb58a6556cd6 (diff)
parent3e4dda70cc989a4f8079541972942609229e9f55 (diff)
downloadlinux-c0d6fe2f01c475cc137d90607a07578586883df8.tar.xz
Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM DT updates from Olof Johansson: "As usual, this is the massive branch we have for each release. Lots of various updates and additions of hardware descriptions on existing hardware, as well as the usual additions of new boards and SoCs. This is also the first release where we've started mixing 64- and 32-bit DT updates in one branch. (Specific details on what's actually here and new is pretty easy to tell from the diffstat, so there's little point in duplicating listing it here)" * tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (499 commits) ARM: dts: uniphier: add system-bus-controller nodes ARM64: juno: disable NOR flash node by default ARM: dts: uniphier: add outer cache controller nodes arm64: defconfig: Enable PCI generic host bridge by default arm64: Juno: Add support for the PCIe host bridge on Juno R1 Documentation: of: Document the bindings used by Juno R1 PCIe host bridge ARM: dts: uniphier: add I2C aliases for ProXstream2 boards dts/Makefile: Add build support for LS2080a QDS & RDB board DTS dts/ls2080a: Add DTS support for LS2080a QDS & RDB boards dts/ls2080a: Update Simulator DTS to add support of various peripherals dts/ls2080a: Remove text about writing to Free Software Foundation dts/ls2080a: Update DTSI to add support of various peripherals doc: DTS: Update DWC3 binding to provide reference to generic bindings doc/bindings: Update GPIO devicetree binding documentation for LS2080A Documentation/dts: Move FSL board-specific bindings out of /powerpc Documentation: DT: Add entry for FSL LS2080A QDS and RDB boards arm64: Rename FSL LS2085A SoC support code to LS2080A arm64: Use generic Layerscape SoC family naming ARM: dts: uniphier: add ProXstream2 Vodka board support ARM: dts: uniphier: add ProXstream2 Gentil board support ...
Diffstat (limited to 'Documentation/devicetree/bindings/hwmon')
-rw-r--r--Documentation/devicetree/bindings/hwmon/pwm-fan.txt29
1 files changed, 27 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/hwmon/pwm-fan.txt b/Documentation/devicetree/bindings/hwmon/pwm-fan.txt
index 610757ce4492..c6d533202d3e 100644
--- a/Documentation/devicetree/bindings/hwmon/pwm-fan.txt
+++ b/Documentation/devicetree/bindings/hwmon/pwm-fan.txt
@@ -3,10 +3,35 @@ Bindings for a fan connected to the PWM lines
Required properties:
- compatible : "pwm-fan"
- pwms : the PWM that is used to control the PWM fan
+- cooling-levels : PWM duty cycle values in a range from 0 to 255
+ which correspond to thermal cooling states
Example:
- pwm-fan {
+ fan0: pwm-fan {
compatible = "pwm-fan";
- status = "okay";
+ cooling-min-state = <0>;
+ cooling-max-state = <3>;
+ #cooling-cells = <2>;
pwms = <&pwm 0 10000 0>;
+ cooling-levels = <0 102 170 230>;
};
+
+ thermal-zones {
+ cpu_thermal: cpu-thermal {
+ thermal-sensors = <&tmu 0>;
+ polling-delay-passive = <0>;
+ polling-delay = <0>;
+ trips {
+ cpu_alert1: cpu-alert1 {
+ temperature = <100000>; /* millicelsius */
+ hysteresis = <2000>; /* millicelsius */
+ type = "passive";
+ };
+ };
+ cooling-maps {
+ map0 {
+ trip = <&cpu_alert1>;
+ cooling-device = <&fan0 0 1>;
+ };
+ };
+ };