linux-kernel - [PATCH 3/5] remoteproc: imx_rproc: Enable PM runtime support unconditionally

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Message-Id: <20250918-imx_rproc_c2-v1-3-deec8183185f@nxp.com>
Date: Thu, 18 Sep 2025 19:51:18 +0800
From: Peng Fan <peng.fan@....com>
To: Bjorn Andersson <andersson@...nel.org>, 
 Mathieu Poirier <mathieu.poirier@...aro.org>, 
 Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Frank Li <frank.li@....com>, 
 Daniel Baluta <daniel.baluta@....com>
Cc: linux-remoteproc@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Peng Fan <peng.fan@....com>
Subject: [PATCH 3/5] remoteproc: imx_rproc: Enable PM runtime support
 unconditionally

PM runtime support is safe and applicable across all i.MX platforms, not
just those using the SCU API. Remove the conditional check and enable PM
runtime unconditionally to simplify the code and ensure consistent power
management behavior.

Signed-off-by: Peng Fan <peng.fan@....com>
---
 drivers/remoteproc/imx_rproc.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index 74c958d44611b66e024180d69d71daac5a2f9e76..69b57cb4b251d9fb65a23e139a1960bf29c175ed 100644
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -1123,19 +1123,17 @@ static int imx_rproc_probe(struct platform_device *pdev)
 			return dev_err_probe(dev, ret, "register restart handler failure\n");
 	}
 
-	if (dcfg->method == IMX_RPROC_SCU_API) {
-		ret = devm_pm_runtime_enable(dev);
-		if (ret)
-			return dev_err_probe(dev, ret, "Failed to enable runtime PM\n");
+	ret = devm_pm_runtime_enable(dev);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to enable runtime PM\n");
 
-		ret = pm_runtime_resume_and_get(dev);
-		if (ret)
-			return dev_err_probe(dev, ret, "pm_runtime get failed\n");
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret)
+		return dev_err_probe(dev, ret, "pm_runtime get failed\n");
 
-		ret = devm_add_action_or_reset(dev, imx_rproc_pm_runtime_put, dev);
-		if (ret)
-			return dev_err_probe(dev, ret, "Failed to add devm disable pm action\n");
-	}
+	ret = devm_add_action_or_reset(dev, imx_rproc_pm_runtime_put, dev);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to add devm disable pm action\n");
 
 	ret = devm_rproc_add(dev, rproc);
 	if (ret)

-- 
2.37.1