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dt-bindings: cp110: document the thermal interrupt capabilities 

The thermal IP can produce interrupts on overheat situation.
Describe them.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
This commit is contained in:
Miquel Raynal 2018-12-12 10:36:43 +01:00 committed by Eduardo Valentin
parent 1bc7523817
commit bf9ff83f93
1 changed files with 9 additions and 0 deletions
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Documentation/devicetree/bindings/arm/marvell/cp110-system-controller.txt
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@ -199,6 +199,9 @@ Thermal:
The thermal IP can probe the temperature all around the processor. It The thermal IP can probe the temperature all around the processor. It
may feature several channels, each of them wired to one sensor. may feature several channels, each of them wired to one sensor.
It is possible to setup an overheat interrupt by giving at least one
critical point to any subnode of the thermal-zone node.
For common binding part and usage, refer to For common binding part and usage, refer to
Documentation/devicetree/bindings/thermal/thermal.txt Documentation/devicetree/bindings/thermal/thermal.txt
@ -208,6 +211,11 @@ Required properties:
- reg: register range associated with the thermal functions. - reg: register range associated with the thermal functions.
Optional properties: Optional properties:
- interrupts-extended: overheat interrupt handle. Should point to
a line of the ICU-SEI irqchip (116 is what is usually used by the
firmware). The ICU-SEI will redirect towards interrupt line #37 of the
AP SEI which is shared across all CPs.
See interrupt-controller/interrupts.txt
- #thermal-sensor-cells: shall be <1> when thermal-zones subnodes refer - #thermal-sensor-cells: shall be <1> when thermal-zones subnodes refer
to this IP and represents the channel ID. There is one sensor per to this IP and represents the channel ID. There is one sensor per
channel. O refers to the thermal IP internal channel. channel. O refers to the thermal IP internal channel.
@ -220,6 +228,7 @@ CP110_LABEL(syscon1): system-controller@6f8000 {
CP110_LABEL(thermal): thermal-sensor@70 { CP110_LABEL(thermal): thermal-sensor@70 {
compatible = "marvell,armada-cp110-thermal"; compatible = "marvell,armada-cp110-thermal";
reg = <0x70 0x10>; reg = <0x70 0x10>;
interrupts-extended = <&CP110_LABEL(icu_sei) 116 IRQ_TYPE_LEVEL_HIGH>;
#thermal-sensor-cells = <1>; #thermal-sensor-cells = <1>;
}; };
}; };