From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-eopbgr70087.outbound.protection.outlook.com ([40.107.7.87]:44830 "EHLO EUR04-HE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725975AbfBNLos (ORCPT ); Thu, 14 Feb 2019 06:44:48 -0500 From: Anson Huang Subject: [PATCH 0/4] Add i.MX8QXP system controller watchdog support Date: Thu, 14 Feb 2019 11:44:38 +0000 Message-ID: <1550144346-1187-1-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 Sender: devicetree-owner@vger.kernel.org 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" , "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-watchdog@vger.kernel.org" Cc: dl-linux-imx List-ID: i.MX8QXP is an ARMv8 Cortex-A35 SoC with a Cortex-M4 system controller insi= de, 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 --=20 2.7.4