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Mon, 18 Feb 2019 02:01:11 +0000 Received: from DB3PR0402MB3916.eurprd04.prod.outlook.com ([fe80::14e8:6d2e:fe21:4fd5]) by DB3PR0402MB3916.eurprd04.prod.outlook.com ([fe80::14e8:6d2e:fe21:4fd5%3]) with mapi id 15.20.1601.023; Mon, 18 Feb 2019 02:01:11 +0000 From: Anson Huang 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" , "wim@linux-watchdog.org" , "linux@roeck-us.net" , Aisheng Dong , "ulf.hansson@linaro.org" , Daniel Baluta , Andy Gross , "horms+renesas@verge.net.au" , "heiko@sntech.de" , "arnd@arndb.de" , "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-watchdog@vger.kernel.org" Subject: [PATCH V2 0/4] Add i.MX8QXP system controller watchdog support Thread-Topic: [PATCH V2 0/4] Add i.MX8QXP system controller watchdog support Thread-Index: AQHUxy3SjzHfKLwYjUOtmItPpKm1yA== Date: Mon, 18 Feb 2019 02:01:11 +0000 Message-ID: <1550454997-4398-1-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: HK2PR0401CA0006.apcprd04.prod.outlook.com (2603:1096:202:2::16) 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 i.MX8QXP is an ARMv8 Cortex-A35 SoC with a Cortex-M4 system controller inside, the system controller manages overall power, clock, secure RTC and watchdog etc., so Linux kernel running on A35 needs to communicate with system controller for watchdog operation, this system controller watchdog will call SMC to trap to EL3 secure world ARM-Trusted-Firmware and then it will request system controller to do the watchdog operation via IPC. Below are the patch dependency: The dt-binding and imx8qxp.dtsi patch are based on my thermal patch series as below: https://patchwork.kernel.org/patch/10800699/ Anson Huang (4): dt-bindings: fsl: scu: add watchdog binding watchdog: imx_sc: Add i.MX system controller watchdog support arm64: defconfig: add support for i.MX system controller watchdog arm64: dts: freescale: imx8qxp: add watchdog support .../devicetree/bindings/arm/freescale/fsl,scu.txt | 10 + arch/arm64/boot/dts/freescale/imx8qxp.dtsi | 4 + arch/arm64/configs/defconfig | 1 + drivers/watchdog/Kconfig | 13 ++ drivers/watchdog/Makefile | 1 + drivers/watchdog/imx_sc_wdt.c | 210 +++++++++++++++++++++ 6 files changed, 239 insertions(+) create mode 100644 drivers/watchdog/imx_sc_wdt.c -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel