From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (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 15AE7476699; Tue, 1 Sep 2026 09:04:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788253487; cv=none; b=WkR4wgV1fx0pQWdWlYpmzSwwQAfIZGubaIxwDor9RDZSIWQxYD9fdFxYRQffg5hLHGpfALhOvlFgRchMew4IEqjd0qAiJk1cp7I34x5mRov71VN6OfAEWZ9nXJ5jnoohLf2zJ4uQxgHjnbaBvovERRp0NDfW+n3bdVq9yuDS71c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788253487; c=relaxed/simple; bh=x5HQxmAA8fLOqPWiGcjUafFj8wQkUmhK6xdywAwg13U=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=cJ64BponWPHsKrtsYAvNJQOzWZLnR5b9W9/lzpXx0rt91FMqDeWiE0vyjLuQUXrbe+4g3ZW7fKzWzlhO3J5RSVQdhecRQXObatAWXgPNc89l9qbGZg/7dUwZsnH5bJuBwkR8VAnk7GitXTtE8JFb95gB/X/baeChA6Jzjx0R9kw= 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=W8dGP2Bh; arc=none smtp.client-ip=198.175.65.19 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="W8dGP2Bh" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1788253485; x=1819789485; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=x5HQxmAA8fLOqPWiGcjUafFj8wQkUmhK6xdywAwg13U=; b=W8dGP2BhWv4pDpry8NCEettNgRZrd7H7HIrSEk+375F9LA297p3xNFWe q5xFEREYxmCdOMPmJPOQfDxQii74ZJQowYnazOT1uRYUtE7R7mI0NMPW8 711jssH1IXJwzzlFga2m7Q2AI2ZFXtFv2501CbubVZOQLKFVoM7L4m9LY kr3g+o/wSDaxSwPJ+bzSKhRYOOmdTVfn5ZwJGOEruIiYRHI3M1p3AUlE1 d3ss1l7xovAZs0iZhjoTXIgR8pIQWFkgQ7KHXOp2UMMheBNwRMN9woWlq 5Kn3g03634Pm1tDUjqWr3bwJamoNj6u4iVrYpS6Ecx9xzs26UjHp9Nu5J w==; X-CSE-ConnectionGUID: EfyTaIW0SIqsyHnGVChlQg== X-CSE-MsgGUID: b1kVI+HmSjSLIYwtxftUAA== X-IronPort-AV: E=McAfee;i="6800,10657,11892"; a="88603136" X-IronPort-AV: E=Sophos;i="6.25,255,1779174000"; d="scan'208";a="88603136" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Sep 2026 02:04:44 -0700 X-CSE-ConnectionGUID: IBkMqBNFSIKAR7s3wZDz1w== X-CSE-MsgGUID: /TPPfTzpR4S/wobxErPGcw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,255,1779174000"; d="scan'208";a="264752931" Received: from black.igk.intel.com ([10.91.253.5]) by fmviesa006.fm.intel.com with ESMTP; 01 Sep 2026 02:04:40 -0700 Received: by black.igk.intel.com (Postfix, from userid 1001) id 8318899; Tue, 01 Sep 2026 11:04:39 +0200 (CEST) Date: Tue, 1 Sep 2026 11:04:39 +0200 From: Mika Westerberg To: Sven Peter Cc: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heikki Krogerus , Janne Grunau , Neal Gompa , Andreas Noever , Mika Westerberg , Yehezkel Bernat , Philipp Zabel , Konrad Dybcio , linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 13/19] thunderbolt: Add QUIRK_NO_DMA_PORT Message-ID: <20260901090439.GD106095@black.igk.intel.com> References: <20260830-b4-apple-soc-tbt-v1-0-44bc9348683c@kernel.org> <20260830-b4-apple-soc-tbt-v1-13-44bc9348683c@kernel.org> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20260830-b4-apple-soc-tbt-v1-13-44bc9348683c@kernel.org> Hi, On Sun, Aug 30, 2026 at 10:19:31PM +0200, Sven Peter wrote: > Apple Silicon machines load and update the host router firmware with a > separate, proprietary mechanism and have no DMA port. Add a quirk to > skip its initialization. DMA port is Intel Thunderbolt 1-3 thing and not expected to found on USB4 routers. The current code should not even be trying to find it, if it does then that's a bug that should be fixed. USB4 router firmware upgrades use the standard operations and if those are not supported then we just don't expose the corresponding NVMem nodes.