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Thu, 21 Mar 2019 02:26:39 +0000 Received: from DB3PR0402MB3916.eurprd04.prod.outlook.com ([fe80::f1b4:a1fb:cfd1:3f08]) by DB3PR0402MB3916.eurprd04.prod.outlook.com ([fe80::f1b4:a1fb:cfd1:3f08%7]) with mapi id 15.20.1730.013; Thu, 21 Mar 2019 02:26:39 +0000 From: Anson Huang To: "wim@linux-watchdog.org" , "linux@roeck-us.net" , "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" , Aisheng Dong , Daniel Baluta , "horms+renesas@verge.net.au" , "heiko@sntech.de" , "maxime.ripard@bootlin.com" , Andy Gross , "jagan@amarulasolutions.com" , "bjorn.andersson@linaro.org" , "enric.balletbo@collabora.com" , "ezequiel@collabora.com" , "stefan.wahren@i2se.com" , "marc.w.gonzalez@free.fr" , "olof@lixom.net" , "linux-watchdog@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" Subject: [PATCH V9 1/4] dt-bindings: watchdog: add i.MX system controller watchdog Thread-Topic: [PATCH V9 1/4] dt-bindings: watchdog: add i.MX system controller watchdog Thread-Index: AQHU342DB8FETA5RyEWUAGDpn5oqog== Date: Thu, 21 Mar 2019 02:26:38 +0000 Message-ID: <1553134884-1720-2-git-send-email-Anson.Huang@nxp.com> References: <1553134884-1720-1-git-send-email-Anson.Huang@nxp.com> In-Reply-To: <1553134884-1720-1-git-send-email-Anson.Huang@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR04CA0017.apcprd04.prod.outlook.com (2603:1096:203:36::29) To DB3PR0402MB3916.eurprd04.prod.outlook.com (2603:10a6:8:10::18) authentication-results: spf=none (sender IP is ) smtp.mailfrom=anson.huang@nxp.com; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add i.MX system controller watchdog binding doc. Signed-off-by: Anson Huang --- Changes since V8: - add optional property "timeout-sec" according to driver change. --- .../bindings/watchdog/fsl-imx-sc-wdt.txt | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt diff --git a/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt b/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt new file mode 100644 index 0000000..02b87e9 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt @@ -0,0 +1,24 @@ +* Freescale i.MX System Controller Watchdog + +i.MX system controller watchdog is for i.MX SoCs with system controller inside, +the watchdog is managed by system controller, users can ONLY communicate with +system controller from secure mode for watchdog operations, so Linux i.MX system +controller watchdog driver will call ARM SMC API and trap into ARM-Trusted-Firmware +for watchdog operations, ARM-Trusted-Firmware is running at secure EL3 mode and +it will request system controller to execute the watchdog operation passed from +Linux kernel. + +Required properties: +- compatible: Should be : + "fsl,imx8qxp-sc-wdt" + followed by "fsl,imx-sc-wdt"; + +Optional properties: +- timeout-sec : Contains the watchdog timeout in seconds. + +Examples: + +watchdog { + compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt"; + timeout-sec = <60>; +}; -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel