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Mon, 12 Apr 2021 11:42:21 +0000 From: "Peng Fan (OSS)" To: sbabic@denx.de, festevam@gmail.com Cc: u-boot@lists.denx.de, uboot-imx@nxp.com, Peng Fan Subject: [PATCH 20/37] arm: imx8ulp: disable wdog3 Date: Mon, 12 Apr 2021 20:12:49 +0800 Message-Id: <20210412121306.11484-21-peng.fan@oss.nxp.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210412121306.11484-1-peng.fan@oss.nxp.com> References: <20210412121306.11484-1-peng.fan@oss.nxp.com> X-Originating-IP: [119.31.174.71] X-ClientProxiedBy: HK2PR0401CA0009.apcprd04.prod.outlook.com (2603:1096:202:2::19) To DB6PR0402MB2760.eurprd04.prod.outlook.com (2603:10a6:4:a1::14) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from linux-1xn6.ap.freescale.net (119.31.174.71) by HK2PR0401CA0009.apcprd04.prod.outlook.com (2603:1096:202:2::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4020.16 via Frontend Transport; Mon, 12 Apr 2021 11:42:19 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 719ae8af-b869-4ae5-07bc-08d8fda80844 X-MS-TrafficTypeDiagnostic: DB7PR04MB5244: X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1247; 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DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData: M0BE6dIaZCD5ski/VtzUdOtTYttw1HEdpOFEqA/HgdafYTR4b0b0cTS4lHeGgtu8RxKqnT3uvWoV/wZeAiLgc1d8l6CAFeaVOf80bZlvWOM6FkD1WbIQbUOsg52aO0m88muw9mwgHskYCJ2Bq9nTrtX3DTFHcoA0tBJy6Ajt+ty+9Xh3z20SwhSCti2mi1OEB34hZZikMMjpO3Tn44AkfHkHcJWWCFSKNTEjCq/TRkFDW4b9xqIHNcp+6FBfxwdYlBOytbsIKskVsb/OZudnU1WUmWMYrq+/cFxbstXIYrUOLfLEgUAov8BOJNWxtCR4A0nXXTQZzyD1OXppuGlnwUJFKP6mikHg4l65Pc9Wt4N8lPkejNYyzMdzup9YmPhtvEpcDkdZ/ZvdgYSfVxXS+YlZ20Vcj7jGDiU2GyO/ZSRKWAPKBda7wa26+5mJEiQ/ihPkF/J8c6tCNIFIwGc2ymuJLRAnXhGmCGHgZT4Gyzehw4bkyV3lLkhkJdEUcNabM4pkZEjznNHN2e9upRHDTo46LGL5QKDIGp50dYbFYpDcMqXLN91gCbp/1N6jrGFc+wrfk2b2V8R5I2rNfX5jeR6AMu7Q1lNcWYcOtv16lS1G9Rui3EczuodtFUSKmZsTCOeYhc6/CWt2y3od+mEirkwZefII5PiUfuyqTvesKoE76/Obsg0FQG+qojWv88DreLR7osTT8la9rVSCuQ3seU+bOLMv/1kMvEmEO2RH3xNkg5ad3DPfoKqXokJyCvzOb7lP1dNrKTvDkVA0Xlb8X7V2wX/+t8LCzFCCjqx4fMYfnKomzaVU40SfTBJq9sppHFFTzWUi5IKep3vraOLQKJ1yp1MEXmqgm+dvfDXMCUlA9Nl8mLubd0NBT1qYgi1wGKKKRkpVxxXy+kOb1qiYPLngh03o1TMSd3frrk2a+vAu8Hc1QaaCNZuIXqONhvCu1JvXG5im1UBFywee4MBKJkSoQErvSq6hCj4253OgxervRuzO7mpICseXmeO5oeOCbFLENmPdj9XB4vFsF9wHhxy3Wtb2QcVvqLEGvtNY6A//DK2OKUvQoTr3MZUiK8ZwNU7A7cIMj8v5GNSgPa0lCLMwihxSDN0eLkNNJSXJ/TcatZd8wigTzUUZG2tq9du+zr1cFKhRWT31dSC5C+5wwJ5PqFH4R7oMnHHt+OPgzE2SnAu904+MEDkEQDxibjwNxRMEMfmzoP0Z2mefjgE0iyLzVsmeWUiiVFGmNnzyIcnaa+YJ3JxVqmQKdlFg3M/qRNz2J0PGm77HeW4JFUV549R57Ymn4+8dpaHz8LmXd3S0+xgugruwg8qqQXshrrbgjpjctBzOtXGZeZlSAGV/dA== X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 719ae8af-b869-4ae5-07bc-08d8fda80844 X-MS-Exchange-CrossTenant-AuthSource: DB6PR0402MB2760.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Apr 2021 11:42:20.9533 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: utJWXV67+KirYIbKhSPlLVgW7WSZQ8OJtCEChZamAAiQLSLPNHdZCN5sZQo79C3vGUR8d2SiHT5v+H1kQ5oLRw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR04MB5244 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.4 at phobos.denx.de X-Virus-Status: Clean From: Peng Fan Disable wdog3 which is configured by ROM Signed-off-by: Peng Fan --- arch/arm/mach-imx/imx8ulp/soc.c | 36 ++++++++++++++++++++++++++++++++- 1 file changed, 35 insertions(+), 1 deletion(-) -- 2.30.0 diff --git a/arch/arm/mach-imx/imx8ulp/soc.c b/arch/arm/mach-imx/imx8ulp/soc.c index be7d3d7259..a1c229c4f0 100644 --- a/arch/arm/mach-imx/imx8ulp/soc.c +++ b/arch/arm/mach-imx/imx8ulp/soc.c @@ -144,9 +144,43 @@ int print_cpuinfo(void) } #endif +#define UNLOCK_WORD0 0xC520 /* 1st unlock word */ +#define UNLOCK_WORD1 0xD928 /* 2nd unlock word */ +#define REFRESH_WORD0 0xA602 /* 1st refresh word */ +#define REFRESH_WORD1 0xB480 /* 2nd refresh word */ + +static void disable_wdog(void __iomem *wdog_base) +{ + u32 val_cs = readl(wdog_base + 0x00); + + if (!(val_cs & 0x80)) + return; + + dmb(); + __raw_writel(REFRESH_WORD0, (wdog_base + 0x04)); /* Refresh the CNT */ + __raw_writel(REFRESH_WORD1, (wdog_base + 0x04)); + dmb(); + + if (!(val_cs & 800)) { + dmb(); + __raw_writel(UNLOCK_WORD0, (wdog_base + 0x04)); + __raw_writel(UNLOCK_WORD1, (wdog_base + 0x04)); + dmb(); + + while (!(readl(wdog_base + 0x00) & 0x800)) + ; + } + writel(0x0, (wdog_base + 0x0C)); /* Set WIN to 0 */ + writel(0x400, (wdog_base + 0x08)); /* Set timeout to default 0x400 */ + writel(0x120, (wdog_base + 0x00)); /* Disable it and set update */ + + while (!(readl(wdog_base + 0x00) & 0x400)) + ; +} + void init_wdog(void) { - /* TODO */ + disable_wdog((void __iomem *)WDG3_RBASE); } void s_init(void)