From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.11]) (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 A91643F9F4D for ; Thu, 28 May 2026 17:06:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779988017; cv=none; b=C5nrlP944qd3NvSLGsMwJGAGYuBiuLQDPMmlbW+Ubrx7FRslmL+/5h3vLgBU1hm/MhUkTnoO7tH+CNZZp6nWhlBvKJQ3rSZeQ8KSDm5GJqA/T60je85z5KzbcnOmTcT6az3wqrdNqAxwWTTni4KvJGsBHcPRBC6x9URxHxjEG5w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779988017; c=relaxed/simple; bh=Qf/V7HR1idk4/XxgOMTIcAUc/gQTjx4kFgzXdQo7Rmc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=nuoETgH/sLiCagcndfbfYYq0RAxY12ANbSlvtHna/bKMEdXwOQJHcM8FXO4usB6T4s2FNaxW86DCQ/MLPbMr8Q2rBDgnvzz5pCW2aE5CmGhUqIRgpL+gKygpSAvCS1tpTR96YkS9Js20hVnL/z33TgDYTICHnZSt0raARn/YKis= 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=ZMSj3L4D; arc=none smtp.client-ip=192.198.163.11 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="ZMSj3L4D" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1779988015; x=1811524015; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=Qf/V7HR1idk4/XxgOMTIcAUc/gQTjx4kFgzXdQo7Rmc=; b=ZMSj3L4Dchm5010RH7FQCwhxJhEh26Goc1XcEKN8rkIeZl2XGNseky9t Pw4VMADoXvFCJmLuPkUg16pqGubzByEQUsR+mHyBt1b87adf1CjkhF/vV niSpCfER8YEE69ZaoUDBG7QFhHlby3sg+sQgPf7UJvBLEYpgAsio4XA/C SIdNj9RGKDZR5OHqTZ42+nunlUfOGj9BbNI4Q/Bj9ALuxWxPtobOLqUcp 8N8CBqjSIiPHtuzZSpGaJAe7jVlKpcOuRdWlALmbNv8Vp70+/MxpyVYNR IaLkUvq1xrpMHNqHuiEEMdjB2Wrkx5Vib7Y/WMKQdaB8kw6u4YvDl0NWk g==; X-CSE-ConnectionGUID: 6UW4MmQDQBOU39G4VKkmqg== X-CSE-MsgGUID: nxDY7LxITS+I8DTOytTzmQ== X-IronPort-AV: E=McAfee;i="6800,10657,11800"; a="91405943" X-IronPort-AV: E=Sophos;i="6.24,173,1774335600"; d="scan'208";a="91405943" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2026 10:06:55 -0700 X-CSE-ConnectionGUID: 59vqV+YDRIi1YHCLgfgLug== X-CSE-MsgGUID: +h6SSr9sRnC4K+Vm2x/PKw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,173,1774335600"; d="scan'208";a="242703434" Received: from ettammin-mobl3.ger.corp.intel.com (HELO mdjait-mobl) ([10.245.244.75]) by orviesa009-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2026 10:06:53 -0700 Date: Thu, 28 May 2026 19:06:44 +0200 From: Mehdi Djait To: Miguel Vadillo Cc: linux-media@vger.kernel.org, wei.a.xu@intel.com, atul.raut@intel.com, sakari.ailus@linux.intel.com, antti.laakso@linux.intel.com, kieran.bingham@ideasonboard.com Subject: Re: [PATCH v5 3/3] ACPI: scan: Honor _DEP for Intel CVS devices Message-ID: References: <20260527170531.383871-1-miguel.vadillo@intel.com> <20260527170531.383871-4-miguel.vadillo@intel.com> 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: <20260527170531.383871-4-miguel.vadillo@intel.com> Hi Miguel, Thank you for the patch! On Wed, May 27, 2026 at 10:05:31AM -0700, Miguel Vadillo wrote: > CVS (Computer Vision Sensing) is an ACPI-enumerated device that sits > inline in the CSI-2 path between the camera sensor and Intel IPU. > On platforms where CVS is present, the camera sensor's ACPI node > declares a _DEP dependency on the CVS device. > > The CVS driver must be fully initialized before camera sensor drivers > probe, because CVS controls the CSI-2 link ownership handshake (via > GPIO REQ/RESP), the MIPI/CSI-2 lane configuration, and the camera > power domain. Without CVS ready, the sensor driver can bind but the > CSI-2 stream will not function correctly. > > The CVS driver calls acpi_dev_clear_dependencies() at the end of its > probe() to unblock waiting consumers once it is ready. > > Move the CVS HIDs from acpi_ignore_dep_ids[] to acpi_honor_dep_ids[] > so that camera sensor enumeration is deferred until the CVS driver has > finished probing, matching the behavior already in place for IVSC. > > Signed-off-by: Miguel Vadillo Tested-by: Mehdi Djait # Dell XPS 13 9350 + IPU7 Reviewed-by: Mehdi Djait -- Kind Regards Mehdi Djait