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authorMiquel Raynal <miquel.raynal@bootlin.com>2018-12-12 10:36:43 +0100
committerEduardo Valentin <edubezval@gmail.com>2019-01-02 04:47:19 -0800
commitbf9ff83f93baf4f404b7e3a90037604f86bea854 (patch)
treeadc58b03b404553944cabc764606832cb2491ede /Documentation
parent1bc7523817215f94d8597f4daccb17a394a5703a (diff)
downloadlinux-bf9ff83f93baf4f404b7e3a90037604f86bea854.tar.bz2
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>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/arm/marvell/cp110-system-controller.txt9
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/marvell/cp110-system-controller.txt b/Documentation/devicetree/bindings/arm/marvell/cp110-system-controller.txt
index 81ce742d2760..4db4119a6d19 100644
--- a/Documentation/devicetree/bindings/arm/marvell/cp110-system-controller.txt
+++ b/Documentation/devicetree/bindings/arm/marvell/cp110-system-controller.txt
@@ -199,6 +199,9 @@ Thermal:
The thermal IP can probe the temperature all around the processor. It
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
Documentation/devicetree/bindings/thermal/thermal.txt
@@ -208,6 +211,11 @@ Required properties:
- reg: register range associated with the thermal functions.
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
to this IP and represents the channel ID. There is one sensor per
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 {
compatible = "marvell,armada-cp110-thermal";
reg = <0x70 0x10>;
+ interrupts-extended = <&CP110_LABEL(icu_sei) 116 IRQ_TYPE_LEVEL_HIGH>;
#thermal-sensor-cells = <1>;
};
};