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Received: from DU0PR04MB9417.eurprd04.prod.outlook.com (2603:10a6:10:358::11) by AS8PR04MB8344.eurprd04.prod.outlook.com (2603:10a6:20b:3b3::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5769.14; Wed, 2 Nov 2022 11:23:31 +0000 Received: from DU0PR04MB9417.eurprd04.prod.outlook.com ([fe80::36a4:e1fc:67a2:c701]) by DU0PR04MB9417.eurprd04.prod.outlook.com ([fe80::36a4:e1fc:67a2:c701%7]) with mapi id 15.20.5791.020; Wed, 2 Nov 2022 11:23:31 +0000 From: "Peng Fan (OSS)" To: andersson@kernel.org, mathieu.poirier@linaro.org, shawnguo@kernel.org, s.hauer@pengutronix.de, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org Cc: kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, linux-remoteproc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Peng Fan Subject: [PATCH V2 2/2] remoteproc: imx_rproc: delay after kick remote processor Date: Wed, 2 Nov 2022 19:24:51 +0800 Message-Id: <20221102112451.128110-3-peng.fan@oss.nxp.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20221102112451.128110-1-peng.fan@oss.nxp.com> References: <20221102112451.128110-1-peng.fan@oss.nxp.com> X-ClientProxiedBy: SI2PR06CA0003.apcprd06.prod.outlook.com (2603:1096:4:186::14) To DU0PR04MB9417.eurprd04.prod.outlook.com (2603:10a6:10:358::11) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU0PR04MB9417:EE_|AS8PR04MB8344:EE_ X-MS-Office365-Filtering-Correlation-Id: 81b76d6f-1cc1-4600-63e3-08dabcc4ac1e X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Some NXP released Cortex-M[x] images has such limitation that it requires linux sends out vring kick message after M4 firmware finish its rpmsg framework initialization. So add delay before linux send out vring kick message. Signed-off-by: Peng Fan --- drivers/remoteproc/imx_rproc.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c index 9fc978e0393c..aa4e06f54f27 100644 --- a/drivers/remoteproc/imx_rproc.c +++ b/drivers/remoteproc/imx_rproc.c @@ -6,6 +6,7 @@ #include #include #include +#include #include #include #include @@ -110,6 +111,7 @@ struct imx_rproc { u32 core_index; struct device **pd_dev; struct device_link **pd_dev_link; + u32 startup_delay; }; static const struct imx_rproc_att imx_rproc_att_imx93[] = { @@ -382,6 +384,9 @@ static int imx_rproc_start(struct rproc *rproc) if (ret) dev_err(dev, "Failed to enable remote core!\n"); + if (priv->startup_delay) + msleep_interruptible(priv->startup_delay); + return ret; } @@ -1087,6 +1092,10 @@ static int imx_rproc_probe(struct platform_device *pdev) if (rproc->state != RPROC_DETACHED) rproc->auto_boot = of_property_read_bool(np, "fsl,auto-boot"); + ret = of_property_read_u32(np, "fsl,startup-delay-ms", &priv->startup_delay); + if (ret) + priv->startup_delay = 0; + ret = rproc_add(rproc); if (ret) { dev_err(dev, "rproc_add failed\n");