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Fri, 24 Jul 2020 07:43:46 +0000 From: Peng Fan To: bjorn.andersson@linaro.org, mathieu.poirier@linaro.org, o.rempel@pengutronix.de, robh+dt@kernel.org Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Peng Fan Subject: [PATCH 04/10] remoteproc: imx_rproc: make syscon optional Date: Fri, 24 Jul 2020 16:08:07 +0800 Message-Id: <20200724080813.24884-5-peng.fan@nxp.com> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20200724080813.24884-1-peng.fan@nxp.com> References: <20200724080813.24884-1-peng.fan@nxp.com> X-ClientProxiedBy: SGAP274CA0014.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:b6::26) 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 SGAP274CA0014.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:b6::26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3216.23 via Frontend Transport; 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But currently i.MX8QM/QXP/7ULP not added, so still check regmap when start/stop to avoid unhappy things. Reviewed-by: Richard Zhu Signed-off-by: Peng Fan --- drivers/remoteproc/imx_rproc.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c index 82594a800a1b..4fad5c0b1c05 100644 --- a/drivers/remoteproc/imx_rproc.c +++ b/drivers/remoteproc/imx_rproc.c @@ -162,6 +162,9 @@ static int imx_rproc_start(struct rproc *rproc) struct device *dev = priv->dev; int ret; + if (!priv->regmap) + return -EOPNOTSUPP; + ret = regmap_update_bits(priv->regmap, dcfg->src_reg, dcfg->src_mask, dcfg->src_start); if (ret) @@ -177,6 +180,9 @@ static int imx_rproc_stop(struct rproc *rproc) struct device *dev = priv->dev; int ret; + if (!priv->regmap) + return -EOPNOTSUPP; + ret = regmap_update_bits(priv->regmap, dcfg->src_reg, dcfg->src_mask, dcfg->src_stop); if (ret) @@ -325,9 +331,10 @@ static int imx_rproc_probe(struct platform_device *pdev) regmap = syscon_regmap_lookup_by_phandle(np, "syscon"); if (IS_ERR(regmap)) { dev_err(dev, "failed to find syscon\n"); - return PTR_ERR(regmap); + regmap = NULL; + } else { + regmap_attach_dev(dev, regmap, &config); } - regmap_attach_dev(dev, regmap, &config); /* set some other name then imx */ rproc = rproc_alloc(dev, "imx-rproc", &imx_rproc_ops,