From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) (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 ACCF2145A1F; Wed, 9 Sep 2026 04:47:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.7 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788929226; cv=none; b=WbhsSNqNyLFWph2J28bazIOSgrmYF/1nJLEx0A7Ffl1QsQdU26Ml1wIqjxu8SLtV/CG7Le4hi3oT9MOvGJuKI2VkaXygdoYnFOZje8VZcV0i3Z0VAzhF8ugUGuawZSnuMVlg7GC/CbELoj4E8r6mDn+/8JYjwJR2WHgINKTa0T4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788929226; c=relaxed/simple; bh=Ok2z4j2NFg0vlwTJJagifJjwcY0TQPyf7bEygM3L1Ls=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=FSWlUIB57MIU4ruGoLHzl/emy9wkoHB6zzvLb8kcYeWeuRVRmKUax4Whx8y12WrjmNVC80B23V6KTl3MLVIdem9fJfBPRnsLXolzd3NdI+i8QQ7oO7Z2Q3pULxbFKoEvOWbpSKf+Itbz7HFJop5Wgk55NV1v9po8DA/bhYb6A4Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=KZIWAq3Y; arc=none smtp.client-ip=192.198.163.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="KZIWAq3Y" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1788929224; x=1820465224; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=Ok2z4j2NFg0vlwTJJagifJjwcY0TQPyf7bEygM3L1Ls=; b=KZIWAq3Yq+p7utBaro0CTd78U+ijFHr4OHRKKhGhXLfxxS9Yym4bvKVC POzcQiHCVQpA3KnO4F+QCJX1TmnojY1ObpM2xvyaVQh9GL0Kr5FjumM+U ahMmPuHrMJPJ/SndyncIcyNGVN1nE9P4WHuS4aSQOQryr8G9E5DDps35f B3pFVP7mrs1eXqW+IRd+20iGfUjAUG9oW3HsfQWYKJx1k2f5RJkVKs80c NqhZNSFeh35EXC8QPJdF1mGyrUxr16JWGn/Q8ZC/NF3cofzo3G0KtphWX Gy809viCNY+IkxeRsKnvwOI0A2LehS32eypt0NteDFqSlPLBFtgIRgE32 w==; X-CSE-ConnectionGUID: 2COCznRqTtuYv7zgue93xA== X-CSE-MsgGUID: fy6o/bkmS/2JENLMArP94Q== X-IronPort-AV: E=McAfee;i="6800,10657,11900"; a="114886663" X-IronPort-AV: E=Sophos;i="6.25,270,1779174000"; d="scan'208";a="114886663" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Sep 2026 21:47:02 -0700 X-CSE-ConnectionGUID: j49rDR/9TsW2DNZymZN0nQ== X-CSE-MsgGUID: ZlAIBf4XTsuMZw6XcZtflQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,270,1779174000"; d="scan'208";a="270718305" Received: from smoticic-mobl1.ger.corp.intel.com (HELO localhost) ([10.245.244.249]) by orviesa008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Sep 2026 21:46:59 -0700 Date: Wed, 9 Sep 2026 07:46:57 +0300 From: Andy Shevchenko To: "D. Manresa" Cc: Lee Jones , Thierry Chatard , Hans de Goede , Ilpo =?iso-8859-1?Q?J=E4rvinen?= , Sakari Ailus , Daniel Scally , linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-media@vger.kernel.org Subject: Re: [PATCH] mfd: intel-lpss: add Dell Latitude 7275 to the resource conflict quirk Message-ID: References: <20260831160754.9857-2-tchatard@gmail.com> <20260908161629.335223-1-dmanresa@gmail.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=us-ascii Content-Disposition: inline In-Reply-To: <20260908161629.335223-1-dmanresa@gmail.com> Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo On Tue, Sep 08, 2026 at 06:16:29PM +0200, D. Manresa wrote: > The Dell Latitude 7275 2-in-1 has the same BIOS bug as the Latitude 5285: > the ACPI GEXP device declares an OperationRegion (BAR0) on the GNVS > variable SB04 and the I2C4 controller (INT3446) builds its _CRS from that > same variable, so intel_lpss_acpi fails to bind the controller with > -EBUSY and the front camera sensor (OV5670, INT3479) is never registered > unless acpi_enforce_resources=lax is passed. > > Add the machine to the DMI table so QUIRK_IGNORE_RESOURCE_CONFLICTS is > applied to INT3446 on it as well. > > Assisted-by: Claude Code:claude-fable-5-1 > Signed-off-by: D. Manresa > --- > Applies on top of "mfd: intel-lpss: add resource conflict quirk for Dell > Latitude 5285" from Thierry Chatard's v10 series [1]. Thierry, feel free > to fold this into v11 instead if you prefer. Do not fold, just add into the series this one as patch 2, for example. > The conflict was verified in the 7275 DSDT (BIOS 1.18.0): GEXP has > OperationRegion (BAR0, SystemMemory, SB04, 0x0208) and INT3446._CRS > returns LCRS (SMD4, SB04, SIR4). With acpi_enforce_resources=lax, which > has the same effect as the quirk, the controller binds and the camera > works with the board data from "platform/x86: int3472: Add TPS68470 board > data for Dell Latitude 7275" [2]. The distribution kernel here builds > intel-lpss-acpi in, so this exact patch has not been run yet. The patches still need an Ack from Lee. > [1] https://lore.kernel.org/linux-media/20260831160754.9857-2-tchatard@gmail.com/ > [2] https://lore.kernel.org/platform-driver-x86/20260908161445.334910-1-dmanresa@gmail.com/ -- With Best Regards, Andy Shevchenko