From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Anson Huang Subject: [PATCH V10 1/4] dt-bindings: fsl: scu: add thermal binding Date: Wed, 27 Feb 2019 08:46:21 +0000 Message-ID: <1551256894-21954-1-git-send-email-Anson.Huang@nxp.com> Content-Language: en-US Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 To: "robh+dt@kernel.org" , "mark.rutland@arm.com" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "catalin.marinas@arm.com" , "will.deacon@arm.com" , "rui.zhang@intel.com" , "edubezval@gmail.com" , "daniel.lezcano@linaro.org" , Aisheng Dong , "ulf.hansson@linaro.org" , "sboyd@kernel.org" , Daniel Baluta , Andy Gross , "horms+renesas@verge.net.au" , "heiko@sntech.de" , "arnd@arndb.de" , "maxime.ripard@bootlin.com" , "bjorn.andersson@linaro.org" , "jagan@amarulasolutions.com" , "enric.balletbo@collabora.com" , "marc.w.gonzalez@free.fr" , "olof@lixom.net" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-pm@vger.kernel.org" Cc: dl-linux-imx List-ID: 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 --- 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 ; + }; }; }; =20 --=20 2.7.4