From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 082A0366831 for ; Fri, 23 Jan 2026 02:06:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769134008; cv=none; b=UhsbGfIREVjtL5Qoqbq0iV/4VUL3oPGGE1ngQwifM7pFctOOYRVykF2pG05HlX06LjoGbU/wef9SawU4Z07825SdS6UmWcjHQ7D0+ADvhnjJVvmmi9i1cM645olaWO/8sZGliU5IhKLgmEKlu1FRRz6QP6pflBQVsq1t8tsD9ks= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769134008; c=relaxed/simple; bh=bjXz2uNgevrvoVgxOP3/YRoBEpxtpiNqvthwULkiCOA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=l1rZxouKVZcmDh9qGz0GogRMLLaX7qDgrehLlLUeAPN6hWzd0KzNMzyEo8/24mBDrebtMf9sMpQTVpMCtu59Y7odKk9cTWYl34hYZHqhCD2kV6sXvK44Oj+BVnUwSvtCguhy5mbr6Ui0mL/vtC8E8WhZODaFw1hu/1DV5neAKJs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=b+Hlid+e; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=FVA44ZzT; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="b+Hlid+e"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="FVA44ZzT" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 60MK8E4n3112240 for ; Fri, 23 Jan 2026 02:06:36 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= ib6OGxut6zAbsFSJhzdQvferETY5q3TDEEt79Tgecv4=; b=b+Hlid+eLaZoCOyn bMHvppqRXCGO4M+PdLFi86GEGCcDOYbhGBOLTIouYt+QYgCnBR3hwWsA8yuWzAkI HTmSZe5GyRAWGDQL4FScjZKjWIW3oAz7MBX/b5sPde7npQaYbgt0zy7bXmgAPDN/ bTNlYjHBitDzcXZ2iPlE6b6MLGmq9XcIi769DeY6d5xpT2Z2pk+a5AOtnw1fAf67 sBcGlsM++eQIkUSxPVhKLCArzm40iX+6vr12CggZBo6uWfvm0c5lTaraitHew29P LACckrnrifnpJpo+1WBiXdiDHMaBLODdeS6LNQbF/OZaY86cgIe0Gy3jAeHIm4pM e+ZWEg== Received: from mail-qt1-f198.google.com (mail-qt1-f198.google.com [209.85.160.198]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4buq3g9qas-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Fri, 23 Jan 2026 02:06:36 +0000 (GMT) Received: by mail-qt1-f198.google.com with SMTP id d75a77b69052e-5014e3becdfso70918431cf.0 for ; Thu, 22 Jan 2026 18:06:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1769133996; x=1769738796; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=ib6OGxut6zAbsFSJhzdQvferETY5q3TDEEt79Tgecv4=; b=FVA44ZzT3PNgjj46Si9Hu8dZJJcFYDPzwcaSCt7dHxfKMjZwGc1LVfYSs/5mPhjW+V aniXxOCgf7HP2fkchQC+ga4r7hvYg2d0xZMGuU/Z4cwRPmRgU+GLqCAPR8gCluXoWcpR y+rBo1stjTBK/UMbw/voZqjIjCpQWzf6/XJVZ5gs9luyUA+fSLVk3PYeTmYYYRSZY28L tJd2rI1aig+XN3MJCohOdqyPF0qavtcZftFM+/Zg8C35TxqV4+vusTGhCRSu02EPjkSm PbLfuM6LmD0nsPdbweKAOa+JtvCo82iW3dmLetJKUhiaQSzukb14h+8oSj/n7rKHN/OT ipVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769133996; x=1769738796; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=ib6OGxut6zAbsFSJhzdQvferETY5q3TDEEt79Tgecv4=; b=T00fzkaSSpaQFnc4kr0KloNS3L6qxhoxM2NJODG9KAJBLJLIruMj9SVcz1+5diOha1 gpjlXS7OXrBwMFiNgEV1yX4Tfs0KcwghKarr3FoQOq7LERHJHNwfEdxl+HVWzGFqpaOI UfqKV6ML6Oz+35lHRw+w75Vv1iI2cgzBBKFLCBkvWkNbi7Jq4hhuvHE1qILY0yqHvEIs W6roSySMmWy7bhYBUEsByqgasReO3w1ndJl7hdotsXVSVC8OVRg/ZtGqJsCRM3TTup54 KQM8JgDp8Is0bZaqGa93Ab1lGP98RHUZmC8svFum26qX3yAvDsR84/a2LjhOi/md3gbz s8bQ== X-Forwarded-Encrypted: i=1; AJvYcCX/OPhyNGshhMx1sxjkwmEKLxmftDTmIPXkC+KhXP8cZ28D1jQZk4H+QFY4gHxqSa8dZltV4wWbn9dTLks=@vger.kernel.org X-Gm-Message-State: AOJu0YyYvvYAgjAjFclPPfGgrpYbFvyHkYAgVMe6biUFb2asi3FysavV 9y5vsaKIzmpFhkJ9zevQ5+iUQm495av9+NF1BW78GIQtT0CnGL1DX6DkMxAiHe+5zUDc446QvA/ hN8H0A6arAPiKBFO+8iiKMSWjx3v7uX8QWFMIgEH8ojCjgFAuBTqCrYcKsBvjfx34BFQ= X-Gm-Gg: AZuq6aIsO96x3tzVKfXPS+YfgUWwEl2ozxgDRcrr6TCeXlHwwD5Y0+yn5oBZQpWBQyU a0Hl4uK35/bB8AHFBRO/GW8d5A58UZjFMhNpdt+BY/w0Cktf0b+Waa1rDv67s1gjajQ1sdRaZto b5PA07qdWwApOBKCk4iwKrGpX/KXjK92MM4NaH1UxeTEPZ2sAcKgtjwvVoaAu9wIyx0Ti3sFaL+ Ql53WWDP0a/LbuGvK9dw0bxW434CJMexw0QDDU1e59oxiqBn8Twj/nSuJTPRT6qS7103XENbvjT JXMNfXI5tWdLPZ+PiDCnopqb2B7xk6KeLtFCY0bChmWLZ8z5ueMAafMDhxMx8RX6Bg5bcEKEu/7 elpj76+mX4sq+hgBsnQQgWG9xKWjpHKJdMgzWK3Hmfm3k623fAy++ZYG8Wzqe+ipQwNMu/G+c5A == X-Received: by 2002:ac8:5ad1:0:b0:4f1:ccea:6744 with SMTP id d75a77b69052e-502f77cfaf5mr24109461cf.58.1769133995852; Thu, 22 Jan 2026 18:06:35 -0800 (PST) X-Received: by 2002:ac8:5ad1:0:b0:4f1:ccea:6744 with SMTP id d75a77b69052e-502f77cfaf5mr24109261cf.58.1769133995490; Thu, 22 Jan 2026 18:06:35 -0800 (PST) Received: from [10.111.168.218] (Global_NAT1_IAD_FW.qualcomm.com. [129.46.232.65]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8c6e37c84acsm71085285a.6.2026.01.22.18.06.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 22 Jan 2026 18:06:35 -0800 (PST) Message-ID: Date: Fri, 23 Jan 2026 10:06:29 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 2/2] media: i2c: imx412: Extend the power-on waiting time To: Sakari Ailus Cc: Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260122-imx412-v6-0-2c0b54594c2a@oss.qualcomm.com> <20260122-imx412-v6-2-2c0b54594c2a@oss.qualcomm.com> Content-Language: en-US From: Wenmeng Liu In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=I9Johdgg c=1 sm=1 tr=0 ts=6972d7ac cx=c_pps a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=C3Dk8TwHQYyIj7nOf9RCJw==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=1ev712hiCEvYkArktcQA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=dawVfQjAaf238kedN5IG:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTIzMDAxMiBTYWx0ZWRfX6lG8fLKp5dtY YTHECNXN0Eiewnhmiy0d2+DXVZZ66w2T+ccPyz1XPJmJU+bjrKzC5k7hl73J72eHmeWzHRYF1Y6 4LZlRokRSde239zX5CNdft2BcFHUjQ1m4/Pkyvo8jGzBD++GMtVtSt7fbiYm+AVctH0SDayzo8r m7VPJT4dk/lI31aCMRzeNzHjxR9EMJWtO2CpEYu+nSguyLcZWgOfK8mbA4egSVejJlMF6D3fUZj i5cW2aT2d73jrD2JW0921ZPLR8Vp/Et2nTHmBQfub5x39OqYR6F00WuzFtwxmTNWo7+nEUAAkzP D8M+ubAYvTnDH2VxkktMUdV1waF5VsO7Wplg+8FG5O6rQCXaUx+/4myHOFdTsFg0SybFkZTNE2v LXyH+MfewjxaiJuP4Kfy+/6nuzmS3r0S5hYgmKrq9LiMqCUG8LJ0JeQmjzqcoVQh8Q0UUBoAWJv JO0TrJhidesm0++RGDQ== X-Proofpoint-GUID: q8Edigu9NFIO5Ht-7FLj8ltNjKXyPB5z X-Proofpoint-ORIG-GUID: q8Edigu9NFIO5Ht-7FLj8ltNjKXyPB5z X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.20,FMLib:17.12.100.49 definitions=2026-01-22_06,2026-01-22_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 priorityscore=1501 bulkscore=0 impostorscore=0 lowpriorityscore=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2601230012 Hi Sakari, On 1/22/2026 8:37 PM, Sakari Ailus wrote: > Hi Wenmeng, > > On Thu, Jan 22, 2026 at 05:31:19PM +0800, Wenmeng Liu wrote: >> 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 >> --- >> 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. >> + */ > > This still doesn't mention the Arducam module. :-( Sorry about this, will mention to... Thanks, Wenmeng