From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from spark.kcore.it (spark.kcore.it [49.13.27.68]) (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 71AC73A8736; Thu, 18 Jun 2026 07:23:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=49.13.27.68 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781767391; cv=none; b=pD3THzp8SoShYsy3XEfjge37g0o+Claxn5g895tP5S2WSKFgq938JhFdi3PSrgdv6ZVoldQmE4aD+mHIMPZ9JK5+QIfF9PdR52kImG8VuBlxlOkg0PqXVHbyaCgB88+vkpgaZbpJ9koIhV7xNyQxPy1ubBJBfyMl1BbYKtT5RAc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781767391; c=relaxed/simple; bh=tOkZG3ENBt1mSFpxNo3zSuAXJ3AO7p4AnGKQKj7x/0U=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To:References; b=k0sb+CiUTTwHcBF8gDLDvVmW+le8iMOLkeKdhwiX39lrBj8IfBR6YCl0nnLnoZlAMsPSyxxO+zbMp1uyQmzepZdVlPXce39HmTaDug+lXn3dIeJZKnQ5jXd7sVmsho60dmtgeQ0Xfv2D1MSMZgUrdMjcAPkLTr1RCNuxEfZ7904= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kcore.it; spf=pass smtp.mailfrom=kcore.it; dkim=pass (1024-bit key) header.d=kcore.it header.i=@kcore.it header.b=CubKutVD; arc=none smtp.client-ip=49.13.27.68 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kcore.it Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kcore.it Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=kcore.it header.i=@kcore.it header.b="CubKutVD" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=kcore.it; s=spark; h=References:In-Reply-To:Content-Type:MIME-Version:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date; bh=tOkZG3ENBt1mSFpxNo3zSuAXJ3AO7p4AnGKQKj7x/0U=; b=CubKutVDJ1K0Npue8hxubg/fhO segPbUqDLj/FWvd3/5Dwr8+X54P37jnyWlLaNBLomOyqOQUySoFQzDX1/HJWCrV1j2CNRo3Vxjt26 hsZtAMnqk0a7QcbmBTs/bIiML3MS+oXNCF6pqMwF8VO8mj5AcIy2Wq9+c3pHCEZgJoKI=; Received: from mnencia by spark.kcore.it with local (Exim 4.99.4) (envelope-from ) id 1wa75U-00000000O69-18ke; Thu, 18 Jun 2026 09:22:56 +0200 Date: Thu, 18 Jun 2026 09:22:56 +0200 From: Marco Nenciarini To: angioli.samuele@gmail.com, linux-media@vger.kernel.org Cc: hansg@kernel.org, ilpo.jarvinen@linux.intel.com, sakari.ailus@linux.intel.com, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org Subject: Re: [BUG] OV02C10 on Dell 16 Premium DA16250 (ARL): INT3472 handshake-derived "dvdd" regulator registered but never linked to sensor, sensor probe fails with -EREMOTEIO Message-ID: Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: References: <396e4b0d-7a2c-4ba4-9569-0428ccd63267@gmail.com> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Samuele, The _STA dump settles it, thanks for running it down. With DSC1/LTH1/CLP1 all _STA=0 and only DSC0 (INT3472:0c) live, the OV02C10 has no live PMIC instance on the DA16250, and the gate is a BIOS/NVS config (CL01/C1TP read but never assigned, no _OSI branch), so acpi_osi spoofing can't reach it. avdd/dovdd/reset/ clock have no live provider to key to. That closes the kernel angle: there is nothing for int3472 to fix here, and the dvdd re-key, though correct, can't bring the sensor up. This is a Dell firmware matter (the RGB-side PMIC topology left disabled in NVS), worth reporting to them if you have a channel. On the standalone dvdd second_sensor quirk: I'd hold off. The second_sensor mechanism already exists; a dvdd_second_sensor field with no enabled board behind it would be unused code, and the kernel doesn't carry a quirk that has no consumer. If a board turns up that actually benefits, the field and its DMI entry can land together in that series, with the consumer that justifies them. Until then there is nothing to upstream. Thanks again for the thorough work on this one. Marco -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEfCO4BD5l0pgKIbbiWJ8D8BulUDgFAmoznMEACgkQWJ8D8Bul UDhpbQ//dT58F+M5aB3CZ6PCvL4SpGMkDD9LQKKMOH/xr4fZGGoDLu0cyrjbDAIk /+4/rOi0UgjLoA1WkEZnitqxYQX88X+gVFs6Nedj/ajDV4lJO1CNDMmoQhYVkevy feUvvPRTnM2rSWTxDdVIIy4/SmBSbGqruVfI8yWgPj3ifNBjbIRPudqWG2iBMgyH 2CsId6CabIAATEsG5sptxemYIKyQqu1svc2c/rvAWJfVDtsYYMYpZq6nrIydoNKU zL91JiXuyLgS17nSYREC0lmXnRYraTL63nYR8eZGHV1oT7PMcWCizCoL/dHImuH/ dH/K6aiX7VC8aWmpd7JQ4Y9OGLRTikx49q2pmlnYCOjSzOs5M/oT6SH7wTx/pmby 0U3kczdXQ6xzooS9obcL/ufUMAEygHwZ2qZA0dbR92zm0XvN6LDSrMjdm7ZBmT8L 3equQOTlfm4sHEmOzYZGVK+f69d6tVeaZhJfubMHHCxfaOITnmr5Z61D8TzoOKuI Pz+MokXBZ5KLJMVz3NvdLnVBqGK5DW5dszUqIJzITtbHIrQjBmV9GzeXGej3Dmrc a03X9jwvcnPfgoxQNQPt++hEzXn2ANqf8Zda45KVILW9aQUrT+NYAEMpCEHUytt6 F4KWtNPNt19JZKHFdTbCd9ra3U/oKZQa0s34VY+NDY8SKkTnvwk= =jGY+ -----END PGP SIGNATURE-----