linux-kernel - [PATCH] phy: cadence: cdns-dphy-rx: Add runtime PM support

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Message-Id: <20250224-cdns_phy_pm-v1-1-0fe2c544cc87@ideasonboard.com>
Date: Mon, 24 Feb 2025 18:10:05 +0530
From: Jai Luthra <jai.luthra@...asonboard.com>
To: Vinod Koul <vkoul@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>
Cc: linux-phy@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Devarsh Thakkar <devarsht@...com>, 
 Tomi Valkeinen <tomi.valkeinen@...asonboard.com>, 
 Jai Luthra <jai.luthra@...asonboard.com>
Subject: [PATCH] phy: cadence: cdns-dphy-rx: Add runtime PM support

Enable runtime power management for the device. The PHY framework
handles calling pm_runtime_(get|put)_sync when powering on/off this
device.

Signed-off-by: Jai Luthra <jai.luthra@...asonboard.com>
---
 drivers/phy/cadence/cdns-dphy-rx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/cadence/cdns-dphy-rx.c b/drivers/phy/cadence/cdns-dphy-rx.c
index 7729cf80a9bd892c3e5db6cdbdc4ece9ada2d99f..3ac80141189c4c8c350b678998e5dec7a15c3892 100644
--- a/drivers/phy/cadence/cdns-dphy-rx.c
+++ b/drivers/phy/cadence/cdns-dphy-rx.c
@@ -12,6 +12,7 @@
 #include <linux/phy/phy.h>
 #include <linux/phy/phy-mipi-dphy.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/sys_soc.h>
 
 #define DPHY_PMA_CMN(reg)		(reg)
@@ -265,7 +266,7 @@ static int cdns_dphy_rx_probe(struct platform_device *pdev)
 		return PTR_ERR(provider);
 	}
 
-	return 0;
+	return devm_pm_runtime_enable(dev);
 }
 
 static const struct of_device_id cdns_dphy_rx_of_match[] = {

---
base-commit: d082ecbc71e9e0bf49883ee4afd435a77a5101b6
change-id: 20250224-cdns_phy_pm-b2b7d472835d

Best regards,
-- 
Jai Luthra <jai.luthra@...asonboard.com>