linux-kernel - [PATCH V15 1/5] dt-bindings: fsl: scu: add thermal binding

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Message-Id: <20190618021820.14885-1-Anson.Huang@nxp.com>
Date:   Tue, 18 Jun 2019 10:18:16 +0800
From:   Anson.Huang@....com
To:     robh+dt@...nel.org, mark.rutland@....com, corbet@....net,
        shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, catalin.marinas@....com, will.deacon@....com,
        rui.zhang@...el.com, edubezval@...il.com,
        daniel.lezcano@...aro.org, aisheng.dong@....com,
        ulf.hansson@...aro.org, peng.fan@....com,
        mchehab+samsung@...nel.org, linux@...ck-us.net,
        daniel.baluta@....com, maxime.ripard@...tlin.com,
        horms+renesas@...ge.net.au, olof@...om.net,
        jagan@...rulasolutions.com, bjorn.andersson@...aro.org,
        leonard.crestez@....com, dinguyen@...nel.org,
        enric.balletbo@...labora.com, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-pm@...r.kernel.org
Cc:     Linux-imx@....com
Subject: [PATCH V15 1/5] dt-bindings: fsl: scu: add thermal binding

From: Anson Huang <Anson.Huang@....com>

NXP i.MX8QXP is an ARMv8 SoC with a Cortex-M4 core inside as
system controller, the system controller is in charge of system
power, clock and thermal sensors etc. management, Linux kernel
has to communicate with system controller via MU (message unit)
IPC to get temperature from thermal sensors, this patch adds
binding doc for i.MX system controller thermal driver.

Signed-off-by: Anson Huang <Anson.Huang@....com>
Reviewed-by: Rob Herring <robh@...nel.org>
Reviewed-by: Dong Aisheng <aisheng.dong@....com>
---
No change.
---
 .../devicetree/bindings/arm/freescale/fsl,scu.txt        | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
index a575e42..fc3844e 100644
--- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
+++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
@@ -155,6 +155,17 @@ Required properties:
 Optional properties:
 - timeout-sec: contains the watchdog timeout in seconds.
 
+Thermal bindings based on SCU Message Protocol
+------------------------------------------------------------
+
+Required properties:
+- compatible:			Should be :
+				  "fsl,imx8qxp-sc-thermal"
+				followed by "fsl,imx-sc-thermal";
+
+- #thermal-sensor-cells:	See Documentation/devicetree/bindings/thermal/thermal.txt
+				for a description.
+
 Example (imx8qxp):
 -------------
 aliases {
@@ -222,6 +233,11 @@ firmware {
 			compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt";
 			timeout-sec = <60>;
 		};
+
+		tsens: thermal-sensor {
+			compatible = "fsl,imx8qxp-sc-thermal", "fsl,imx-sc-thermal";
+			#thermal-sensor-cells = <1>;
+		};
 	};
 };
 
-- 
2.7.4