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X-CSE-ConnectionGUID: ApGysfthSoyZZTE84j8eSQ== X-CSE-MsgGUID: DHeb07pDRl2TRBw40pUeMQ== X-IronPort-AV: E=McAfee;i="6800,10657,11900"; a="100621091" X-IronPort-AV: E=Sophos;i="6.25,271,1779174000"; d="scan'208";a="100621091" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Sep 2026 21:50:39 -0700 X-CSE-ConnectionGUID: t3yLjyHCRoasgCwgzmWvog== X-CSE-MsgGUID: u1n+qZFcRfqsUdFaiUs8fg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,271,1779174000"; d="scan'208";a="268257232" Received: from black.igk.intel.com ([10.91.253.5]) by fmviesa007.fm.intel.com with ESMTP; 09 Sep 2026 21:50:35 -0700 Received: by black.igk.intel.com (Postfix, from userid 1001) id 999D699; Thu, 10 Sep 2026 06:50:33 +0200 (CEST) Date: Thu, 10 Sep 2026 06:50:33 +0200 From: Mika Westerberg To: Sven Peter Cc: Heikki Krogerus , Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , 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 v2 19/22] thunderbolt: Add Apple Silicon support Message-ID: <20260910045033.GN106095@black.igk.intel.com> References: <20260906-b4-apple-soc-tbt-v2-0-1f80085f93fb@kernel.org> <20260906-b4-apple-soc-tbt-v2-19-1f80085f93fb@kernel.org> <20260908091844.GD106095@black.igk.intel.com> <22808191-5310-4d90-9fac-68d0d85b4c54@kernel.org> <20260909060615.GJ106095@black.igk.intel.com> <33699664-6afb-4b46-99d1-98a0f5e57f39@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <33699664-6afb-4b46-99d1-98a0f5e57f39@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260909_215039_867845_7CB8A190 X-CRM114-Status: GOOD ( 21.42 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, On Wed, Sep 09, 2026 at 05:20:35PM +0200, Sven Peter wrote: > Hi, > > On 09.09.26 08:06, Mika Westerberg wrote: > > [...] > > > > > If it is possible, I suggest to use the same way we do in ACPI side here: > > > > https://learn.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports#map-native-protocols-pcie-displayport-tunneled-through-usb4-to-usb4-host-routers > > > > It was specifically designed so that it should support DT as well (that's > > why it uses the device properties _DSD). > > Oh, nice, I didn't know those existed. Konrad already has a PR open to add > these to dt-schema [1] and a PR that already makes use of these for dwc3 > [2]. Great. > I can just write generic code similar to the ACPI one then to add the device > links and split it off from this series, though I think that dt-schema PR > must be merged before we're allowed to use that representation. > I'll adjust the dt-bindings here for v3 to just drop the representation as > OF ports/endpoints as well. > For the PCIe/DP tunnel notifications I should be able to use the same > representation, possibly with an additional usb4-adapter-index property or > similar to differentiate between the two DP IN adapters, once I get to that > then. For PCIe yes, for DP you should not need those at all.