Explain the thermal bindings now that the thermal IP is described being
inside of a system controller. Add a reference to the thermal-zone node.
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
---
.../arm/marvell/ap806-system-controller.txt | 43 ++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
index a856eb9a4e05..c95f3ac5c728 100644
--- a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
+++ b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
@@ -11,6 +11,9 @@ For the top level node:
- compatible: must be: "syscon", "simple-mfd";
- reg: register area of the AP806 system controller
+SYSTEM CONTROLLER 0
+===================
+
Clocks:
-------
@@ -98,3 +101,43 @@ ap_syscon: system-controller@6f4000 {
gpio-ranges = <&ap_pinctrl 0 0 19>;
};
};
+
+SYSTEM CONTROLLER 1
+===================
+
+Thermal:
+--------
+
+For common binding part and usage, refer to
+Documentation/devicetree/bindings/thermal/thermal.txt
+
+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.
+
+Required properties:
+- compatible: "marvell,armada-ap806-thermal"
+
+Optional properties:
+- interrupt-parent/interrupts: overheat interrupt handle. Should point to
+ line 18 of the SEI irqchip.
+ 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, while positive
+ IDs refer to each CPU.
+
+Example:
+ap_syscon1: system-controller@6f8000 {
+ compatible = "syscon", "simple-mfd";
+ reg = <0x6f8000 0x1000>;
+
+ ap_thermal: ap-thermal {
+ compatible = "marvell,armada-ap806-thermal";
+ interrupt-parent = <&sei>;
+ interrupts = <18>;
+ #thermal-sensor-cells = <1>;
+ };
+};
--
2.14.1
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