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From: Wenmeng Liu <wenmeng.liu@oss.qualcomm.com>
To: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>,
	linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
	Wenmeng Liu <quic_wenmliu@quicinc.com>
Subject: Re: [PATCH] media: i2c: imx412: Extend the power-on waiting time
Date: Mon, 22 Dec 2025 17:35:11 +0800	[thread overview]
Message-ID: <bbf6dbc9-42b5-4dd6-9346-c8f38e460709@oss.qualcomm.com> (raw)
In-Reply-To: <aUkLKECix4vohyTB@kekkonen.localdomain>




>>
>> 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.
> 
> Is this somehow specific to the Arducam module? If so, what's there in the
> module that requires this?
> 


Yes, This issue occurred on the Arducam 22-pin IMX577 module.
I have tried changing the sequence of regulator, reset, and clock, and 
found that this module must wait a sufficient amount of time after reset 
before registers can be written (10 ms is a safe duration). This issue 
did not occur when using other IMX577 modules.

Thanks,
Wenmeng

  parent reply	other threads:[~2025-12-22  9:35 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-22  9:04 [PATCH] media: i2c: imx412: Extend the power-on waiting time Wenmeng Liu
2025-12-22  9:11 ` Sakari Ailus
2025-12-22  9:14   ` Wenmeng Liu
2025-12-22  9:35   ` Wenmeng Liu [this message]
2025-12-22 12:11     ` Dave Stevenson
2025-12-22 12:20       ` Wenmeng Liu
2025-12-22 14:16         ` Dave Stevenson
2025-12-23  6:19           ` Wenmeng Liu
2025-12-30 11:33             ` Sakari Ailus
2026-01-05  8:14               ` Wenmeng Liu
2026-01-07 13:36                 ` Sakari Ailus

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