From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D6EC630BF6D; Mon, 22 Dec 2025 09:11:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766394670; cv=none; b=PR5BDwuNc57PtrefRl6cWpo4w0A7h0fWKBlIB5JIRkoZlaFP5qPSpoYao/G/4xvFzu24QYWf6230HV+N2XgYr1ne3pno7q4NCYF0o18Wyv3cciNuZcLcWwT09GJOdmKYiLk8Zk1AY0n7UiHISn7l0EnKyQTX3Kt5HGoE9V8zL7g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766394670; c=relaxed/simple; bh=8kas9TuiC9w4y8rBrxoDOvxqHznS9pQck0eKktSLoRk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=PC6V9JdKaSM8RyrOWfz5QcTzWIKPwalL8HzwSFbqKvDD5Kht7U5Rz0hQgXbVL//fW5+55PmbvbQgzQPj39/dtJbQlDLCEPbOLtQlAGfD6EC1vdKZEsRXfhR2yUF7IJ2C1DuFXMCfHTCH+JzZt9KDFC2VmvJE4PqIdhqDzpMYw9s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=ShajMugZ; arc=none smtp.client-ip=192.198.163.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="ShajMugZ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1766394666; x=1797930666; h=date:from:to:cc:subject:message-id:references: mime-version:content-transfer-encoding:in-reply-to; bh=8kas9TuiC9w4y8rBrxoDOvxqHznS9pQck0eKktSLoRk=; b=ShajMugZDKVbOAxs/AnQWAZEzvttzqHj7B1L9Dss+YJiSHjOB57Nff+w Bf4msHXMVl2sHglmQvGHncz/Tw2uvOPSLdgz6usBNSl2GZ2k+ShaXdeuF M1i1+6IN9h0maXafsvsfo3DRfDWf1rU7dYwKyYXgm/Vw86vyoZ1Fy13wH 5NjfcFQuY2qn6P5icOFguvvOu7eBoOqD+x4kd79MdESk2JJHxki5vyQ/i yQNeJcQ4Yw/SGQixytxE0rEzCXt7+++yTBgipZwwyR8OyYkxW5+DDb/Wl LVfY49HScRoPKpnLcDSQw7g+wYBiw6TOYfDordr1TDDQ3diqVBcOxczfq w==; X-CSE-ConnectionGUID: 1PzfMiPjRMeiAG4XV4qRtA== X-CSE-MsgGUID: kjhhlo0XReapQRn9niJziQ== X-IronPort-AV: E=McAfee;i="6800,10657,11649"; a="67443427" X-IronPort-AV: E=Sophos;i="6.21,167,1763452800"; d="scan'208";a="67443427" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Dec 2025 01:11:05 -0800 X-CSE-ConnectionGUID: JKXpwm+9QlCknUtHKJH93A== X-CSE-MsgGUID: gA1AacHCRWe5QnRk34MaHw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,167,1763452800"; d="scan'208";a="199232903" Received: from ijarvine-mobl1.ger.corp.intel.com (HELO kekkonen.fi.intel.com) ([10.245.245.187]) by orviesa009-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Dec 2025 01:11:04 -0800 Received: from kekkonen.localdomain (localhost [IPv6:::1]) by kekkonen.fi.intel.com (Postfix) with ESMTP id 261B311F87B; Mon, 22 Dec 2025 11:11:04 +0200 (EET) Date: Mon, 22 Dec 2025 11:11:04 +0200 Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo From: Sakari Ailus To: Wenmeng Liu Cc: Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Wenmeng Liu Subject: Re: [PATCH] media: i2c: imx412: Extend the power-on waiting time Message-ID: References: <20251222-imx412-v1-1-51c7e724b376@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20251222-imx412-v1-1-51c7e724b376@oss.qualcomm.com> Hi Wenmeng, Thanks for the patch. On Mon, Dec 22, 2025 at 05:04:07PM +0800, Wenmeng Liu wrote: > From: Wenmeng Liu > > 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? > > Signed-off-by: Wenmeng Liu > --- > Signed-off-by: Wenmeng > --- Which one is the right one? > drivers/media/i2c/imx412.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/media/i2c/imx412.c b/drivers/media/i2c/imx412.c > index b3826f80354703b17b416dc233854da3f5736e38..e444c48c11b171b421c535beb23211bf0b600d3a 100644 > --- a/drivers/media/i2c/imx412.c > +++ b/drivers/media/i2c/imx412.c > @@ -1037,7 +1037,7 @@ static int imx412_power_on(struct device *dev) > goto error_reset; > } > > - usleep_range(1000, 1200); > + usleep_range(10000, 12000); > > return 0; > > -- Kind regards, Sakari Ailus