From mboxrd@z Thu Jan 1 00:00:00 1970 From: miquel.raynal@bootlin.com (Miquel Raynal) Date: Sat, 21 Apr 2018 17:12:45 +0200 Subject: [PATCH 17/27] dt-bindings: ap806: add the thermal node in the syscon file In-Reply-To: <20180421151255.29929-1-miquel.raynal@bootlin.com> References: <20180421151255.29929-1-miquel.raynal@bootlin.com> Message-ID: <20180421151255.29929-18-miquel.raynal@bootlin.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- .../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 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. + +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 at 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