From: haibo.chen@nxp.com
To: mkl@pengutronix.de, mailhol.vincent@wanadoo.fr
Cc: ciprianmarian.costea@oss.nxp.com, haibo.chen@nxp.com,
u.kleine-koenig@baylibre.com, linux-can@vger.kernel.org,
linux-kernel@vger.kernel.org, imx@lists.linux.dev
Subject: [PATCH] can: flexcan: disable transceiver during system PM
Date: Tue, 4 Mar 2025 11:37:31 +0800 [thread overview]
Message-ID: <20250304033731.1762899-1-haibo.chen@nxp.com> (raw)
From: Haibo Chen <haibo.chen@nxp.com>
During system PM, if no wakeup requirement, disable transceiver to
save power.
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
---
drivers/net/can/flexcan/flexcan-core.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/can/flexcan/flexcan-core.c b/drivers/net/can/flexcan/flexcan-core.c
index b347a1c93536..74f3137295fb 100644
--- a/drivers/net/can/flexcan/flexcan-core.c
+++ b/drivers/net/can/flexcan/flexcan-core.c
@@ -2292,6 +2292,7 @@ static int __maybe_unused flexcan_suspend(struct device *device)
return err;
flexcan_chip_interrupts_disable(dev);
+ flexcan_transceiver_disable(priv);
err = pinctrl_pm_select_sleep_state(device);
if (err)
@@ -2325,6 +2326,10 @@ static int __maybe_unused flexcan_resume(struct device *device)
if (err)
return err;
+ err = flexcan_transceiver_enable(priv);
+ if (err)
+ return err;
+
err = flexcan_chip_start(dev);
if (err)
return err;
--
2.34.1
next reply other threads:[~2025-03-04 3:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-04 3:37 haibo.chen [this message]
2025-03-04 4:06 ` Vincent Mailhol
2025-03-04 4:24 ` Bough Chen
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