From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=185.70.43.22 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792486337; b=BxPgvdv76ZnhL/nzYBrv8dXdhkY7QAyb/ASEDgnZwwthsCr+lSD1Z/WUm6GUsTMQ9lsq sb9n1zRTc52xj2P0IE4MktLkj37+AcvVTPo4ah+y8xsf673eHXkzBJph9HJD+eVJZYRMw 3X7uT7J7I4mqc43hCiMWgTZaZimqTitGClaKaETZjkWkyG8DQe0JqgK+PQy9sk009eG5O WwK+u0CbFlpmGyA9CEY57arXah3C3gFBOtNPPEA7v3uXPBqIBXuOAk8/Ig0af8CB4EMjl /1Y2Dl/QqhRtJbLpqyVPZZwlW3P4GVinliDt3crUbdfWEszqt9VLd6z/U5r4KcW4Xog== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792486337; h=DMARC-Filter:DKIM-Signature:Date:To:From:Cc:Subject:Message-ID: In-Reply-To:References:Feedback-ID:X-Pm-Message-ID:MIME-Version: Content-Type:Content-Transfer-Encoding; bh=tkqdn+h+quvZr9vw0T8bcJsxvQ/mJoyu/YMkcY/G2Jo=; b=F+HRD+V7fG9MMe1ug/QbfP0EFD5eq50F00N6W7jtEMVndhuxi/pJ4pdnnrj3oowSJLcY 8h4lozqKF5WedAz31RR7EdJaPsHlwBK7m9MZl3lCe3ySXV6F27R7W6IXL42OC6amWTa3S bmLOCTRmS4SBTfIemAOk1RSnGtsMgaOvBSlqHr4GwmhSWEZI03Zd0tL3sZwS/LLsqeAo8 zIksb/zpWmqy5Tqc0vuj/rr4VA8kEH2xUPIdCurNCqRiwZigBopH2TONmPo6fZT5b04DO 05WvhlU/95/WcZAEsqh792VrED1cmBe/6QTUkALbyakUQFVWPAM2ReabsuFKRpCb+Iw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=pm.me; spf=pass smtp.mailfrom=pm.me; dkim=pass header.d=pm.me header.i=@pm.me header.a=rsa-sha256 header.s=protonmail3 header.b=VifFGusi; arc=none smtp.remote-ip=185.70.43.22 Received: from mail-4322.protonmail.ch (mail-4322.protonmail.ch [185.70.43.22]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 45CA5606A31A for ; Tue, 20 Oct 2026 08:52:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 45CA5606A31A Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=pm.me Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pm.me Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=pm.me header.i=@pm.me header.a=rsa-sha256 header.s=protonmail3 header.b=VifFGusi DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pm.me; s=protonmail3; t=1792486333; x=1792745533; bh=tkqdn+h+quvZr9vw0T8bcJsxvQ/mJoyu/YMkcY/G2Jo=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector; b=VifFGusifNCRwNZ9086C0OV5AWmprlXlgTGT0U8b5CYguiRNKj6NA1yYc1sB3tdiY ahV/sbOkFqqNEQEa4sglx893CE8+7jqKlIJCc/krXJlMmIE0AT8lprEyu6VOjLpjyf KdVMsk0QtMRUr8K3OnuAKO9KDN7u1e4zVoeFR7JxX+LvnG57XpikPAsGa9hmh4nsZZ zqQfgbYuw4G9iZ8UDd42fAOKETSl08ME/6N+ANLhRTeSNEB6tRYm93xbFrSEt7A1QK d+55BdSMWPD+wbx+pzHkJATQp/Jr9eX/cmU6F6qWMtdY0Rtd8eyKwZ5knltbpXMjHL iH1/Ejhrpa/QQ== Date: Tue, 20 Oct 2026 08:52:08 +0000 To: George Neacsu From: Sergey Lebedev Cc: Sakari Ailus , Benjamin Mugnier , Sylvain Petinot , Mauro Carvalho Chehab , Dan Scally , Hans de Goede , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Peter Marshall , Hao Yao , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/4] media: i2c: Add ST VD55G0 global shutter sensor driver Message-ID: <20261020085200.60619-1-lsa.uz@pm.me> In-Reply-To: <179247822513.25202.7960395606350309657@gmail.com> References: <20261019162722.25587-1-lsa.uz@pm.me> <20261019162722.25587-3-lsa.uz@pm.me> <179243379000.31842.4735750009847702427@gmail.com> <20261019193402.52923-1-lsa.uz@pm.me> <179247822513.25202.7960395606350309657@gmail.com> Feedback-ID: 113843758:user:proton X-Pm-Message-ID: d8595080311558c5b70a0b31ff8f4968d8b5aff6 X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi George, On 20/10/2026 07:44, George Neacsu wrote: > Would you be comfortable dropping that write in the next revision? I can > retest the revision on the Snapdragon model and add a Tested-by once it > is clean. Yes, I will drop that write in v2 and leave 0x0329 at its default, and Cc you on it. Thank you for narrowing it down to one line. On the Intel model it makes no difference. In one boot, with the sensor held powered and 0x0329 set to 1, then 0, then 1 again, each state streamed 150 of 150 frames at 59.14 fps and restarted 10 of 10 times. The test-pattern frames showed no shift or extra lines in any state, so IPU7 does not put the status lines into the buffer, and its error count did not change. The full test run without the write matches the run with it, v4l2-compliance 46 of 46 included. One thing I cannot explain: on 16/10 your vd55g1 build streamed 2/2 with 0x0329 =3D 0 written once per power-on, as v1 does it. So the write alone may not be what stops CAMSS; something else in v1 may take part. Leaving the register alone is simpler either way. Sergey