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Subject: [PATCH V10 1/4] dt-bindings: fsl: scu: add thermal binding
Thread-Topic: [PATCH V10 1/4] dt-bindings: fsl: scu: add thermal binding
Thread-Index: AQHUznjp1VM2Vv0vQ0qLNAgNlgUeAQ==
Date:   Wed, 27 Feb 2019 08:46:21 +0000
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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@nxp.com>
---
Changes since V9:
	- change #thermal-sensor-cells value in example to 1, since there are othe=
r
	  thermal sensors inside system controller, it is just because there are s=
till
	  some issue, so system controller does NOT expose them for now, they coul=
d
	  be exposed later, so it should be 1 from HW perspective.
---
 .../devicetree/bindings/arm/freescale/fsl,scu.txt   | 21 +++++++++++++++++=
++++
 1 file changed, 21 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt b/=
Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
index 72d481c..855270b 100644
--- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
+++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
@@ -122,6 +122,21 @@ RTC bindings based on SCU Message Protocol
 Required properties:
 - compatible: should be "fsl,imx8qxp-sc-rtc";
=20
+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/the=
rmal.txt
+				for a description.
+
+- imx,sensor-resource-id: 	A single integer for single thermal zone's reso=
urce ID or
+				an array of integers to specify each thermal zone's sensor
+				resource ID.
+
 Example (imx8qxp):
 -------------
 lsio_mu1: mailbox@5d1c0000 {
@@ -168,6 +183,12 @@ firmware {
 		rtc: rtc {
 			compatible =3D "fsl,imx8qxp-sc-rtc";
 		};
+
+		tsens: thermal-sensor {
+			compatible =3D "fsl,imx8qxp-sc-thermal", "fsl,imx-sc-thermal";
+			#thermal-sensor-cells =3D <1>;
+			imx,sensor-resource-id =3D <IMX_SC_R_SYSTEM>;
+		};
 	};
 };
=20
--=20
2.7.4