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Message-ID: <1550730831-14995-1-git-send-email-Anson.Huang@nxp.com>
Date: Thu, 21 Feb 2019 06:38:30 +0000
From: Anson Huang <anson.huang@....com>
To: "robh+dt@...nel.org" <robh+dt@...nel.org>,
"mark.rutland@....com" <mark.rutland@....com>,
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CC: dl-linux-imx <linux-imx@....com>
Subject: [PATCH V8 1/4] dt-bindings: fsl: scu: add thermal binding
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>
---
Changes since V7:
- remove unused property "tsens-num";
- improve the compatible description;
- update examples according to latest dts file.
---
.../devicetree/bindings/arm/freescale/fsl,scu.txt | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
index 72d481c..d89147e 100644
--- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
+++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
@@ -122,6 +122,19 @@ RTC bindings based on SCU Message Protocol
Required properties:
- compatible: should be "fsl,imx8qxp-sc-rtc";
+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.
+
+- imx,sensor-resource-id: Property array to specify each thermal zone's sensor resource ID.
+
Example (imx8qxp):
-------------
lsio_mu1: mailbox@...c0000 {
@@ -168,6 +181,12 @@ firmware {
rtc: rtc {
compatible = "fsl,imx8qxp-sc-rtc";
};
+
+ tsens: thermal-sensor {
+ compatible = "fsl,imx8qxp-sc-thermal", "fsl,imx-sc-thermal";
+ #thermal-sensor-cells = <0>;
+ imx,sensor-resource-id = <IMX_SC_R_SYSTEM>;
+ };
};
};
--
2.7.4
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