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Tue, 30 Mar 2021 09:27:25 +0000 From: peng.fan@oss.nxp.com To: ohad@wizery.com, bjorn.andersson@linaro.org, mathieu.poirier@linaro.org, o.rempel@pengutronix.de, robh+dt@kernel.org, devicetree@vger.kernel.org Cc: shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-remoteproc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Peng Fan Subject: [PATCH V2 5/8] remoteproc: imx_rproc: parse fsl,auto-boot Date: Tue, 30 Mar 2021 17:12:51 +0800 Message-Id: <1617095574-6764-6-git-send-email-peng.fan@oss.nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1617095574-6764-1-git-send-email-peng.fan@oss.nxp.com> References: <1617095574-6764-1-git-send-email-peng.fan@oss.nxp.com> X-Originating-IP: [119.31.174.66] X-ClientProxiedBy: HK2P15301CA0011.APCP153.PROD.OUTLOOK.COM (2603:1096:202:1::21) To DB6PR0402MB2760.eurprd04.prod.outlook.com (2603:10a6:4:a1::14) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (119.31.174.66) by HK2P15301CA0011.APCP153.PROD.OUTLOOK.COM (2603:1096:202:1::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.4020.0 via Frontend Transport; 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When remote processor is booted before Linux Kernel up, do not parse fsl,auto-boot. So add an entry to store the working mode of remote processor. Currently only IMX_RPROC_NORMAL, IMX_RPROC_EARLY_BOOT. Signed-off-by: Peng Fan --- drivers/remoteproc/imx_rproc.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c index ca17f520d904..c576e12d3817 100644 --- a/drivers/remoteproc/imx_rproc.c +++ b/drivers/remoteproc/imx_rproc.c @@ -83,6 +83,16 @@ struct imx_rproc_dcfg { size_t att_size; }; +enum imx_rproc_mode { + /* Linux load/kick remote core */ + IMX_RPROC_NORMAL, + /* + * remote core booted before kicking Linux, and remote core + * could be stopped & restarted by Linux + */ + IMX_RPROC_EARLY_BOOT, +}; + struct imx_rproc { struct device *dev; struct regmap *regmap; @@ -96,6 +106,7 @@ struct imx_rproc { struct work_struct rproc_work; struct workqueue_struct *workqueue; void __iomem *rsc_table; + enum imx_rproc_mode mode; }; static const struct imx_rproc_att imx_rproc_att_imx8mq[] = { @@ -565,14 +576,18 @@ static int imx_rproc_detect_mode(struct imx_rproc *priv) int ret; u32 val; + priv->mode = IMX_RPROC_NORMAL; + ret = regmap_read(priv->regmap, dcfg->src_reg, &val); if (ret) { dev_err(dev, "Failed to read src\n"); return ret; } - if (!(val & dcfg->src_stop)) + if (!(val & dcfg->src_stop)) { + priv->mode = IMX_RPROC_EARLY_BOOT; priv->rproc->state = RPROC_DETACHED; + } return 0; } @@ -654,6 +669,9 @@ static int imx_rproc_probe(struct platform_device *pdev) INIT_WORK(&priv->rproc_work, imx_rproc_vq_work); + if (priv->mode == IMX_RPROC_NORMAL) + rproc->auto_boot = of_property_read_bool(np, "fsl,auto-boot"); + ret = rproc_add(rproc); if (ret) { dev_err(dev, "rproc_add failed\n");