From: Wenmeng Liu <wenmeng.liu@oss.qualcomm.com>
To: Sakari Ailus <sakari.ailus@linux.intel.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
Wenmeng Liu <wenmeng.liu@oss.qualcomm.com>
Subject: [PATCH v6 2/2] media: i2c: imx412: Extend the power-on waiting time
Date: Thu, 22 Jan 2026 17:31:19 +0800 [thread overview]
Message-ID: <20260122-imx412-v6-2-2c0b54594c2a@oss.qualcomm.com> (raw)
In-Reply-To: <20260122-imx412-v6-0-2c0b54594c2a@oss.qualcomm.com>
The Arducam IMX577 module requires a longer reset time than the 1000µs
configured in the current driver. Increase the wait time after power-on
to ensure proper initialization.
Signed-off-by: Wenmeng Liu <wenmeng.liu@oss.qualcomm.com>
---
drivers/media/i2c/imx412.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/media/i2c/imx412.c b/drivers/media/i2c/imx412.c
index aa63dfc349181bf9c180ffd566b0317d05b410c1..9154c238949e4308755e757bd9c71f0b44f433ee 100644
--- a/drivers/media/i2c/imx412.c
+++ b/drivers/media/i2c/imx412.c
@@ -1037,7 +1037,11 @@ static int imx412_power_on(struct device *dev)
goto error_reset;
}
- usleep_range(1000, 1200);
+ /*
+ * Some IMX577 modules require a longer reset settle time.
+ * Increasing the delay from 1ms to 10ms ensures reliable startup.
+ */
+ usleep_range(10000, 12000);
return 0;
--
2.34.1
next prev parent reply other threads:[~2026-01-22 9:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-22 9:31 [PATCH v6 0/2] media: i2c: imx412: power on timing adjust Wenmeng Liu
2026-01-22 9:31 ` [PATCH v6 1/2] media: i2c: imx412: Assert reset GPIO during probe Wenmeng Liu
2026-01-22 9:31 ` Wenmeng Liu [this message]
2026-01-22 12:37 ` [PATCH v6 2/2] media: i2c: imx412: Extend the power-on waiting time Sakari Ailus
2026-01-23 2:06 ` Wenmeng Liu
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