Thread (47 messages) 47 messages, 6 authors, 2018-07-30
STALE2874d REVIEWED: 7 (7M)

[PATCH v3 16/23] dt-bindings: ap806: add the thermal node in the syscon file

From: miquel.raynal@bootlin.com (Miquel Raynal)
Date: 2018-07-16 14:41:59
Also in: linux-devicetree, linux-pm
Subsystem: arm/marvell kirkwood and armada 370, 375, 38x, 39x, xp, 3700, 7k/8k, cn9130 soc support, open firmware and flattened device tree bindings, the rest · Maintainers: Andrew Lunn, Gregory Clement, Sebastian Hesselbarth, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds

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@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../arm/marvell/ap806-system-controller.txt        | 38 ++++++++++++++++++++++
 1 file changed, 38 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..3fd21bb7cb37 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 +101,38 @@ ap_syscon: system-controller at 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.
+
+Required properties:
+- compatible: must be one of:
+  * marvell,armada-ap806-thermal
+- reg: register range associated with the thermal functions.
+
+Optional properties:
+- #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 at 6f8000 {
+	compatible = "syscon", "simple-mfd";
+	reg = <0x6f8000 0x1000>;
+
+	ap_thermal: thermal-sensor at 80 {
+		compatible = "marvell,armada-ap806-thermal";
+		reg = <0x80 0x10>;
+		#thermal-sensor-cells = <1>;
+	};
+};
-- 
2.14.1
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