From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 840432D0606; Fri, 2 Jan 2026 19:51:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767383498; cv=none; b=IEaOSHaq9SDp1aCtAYKX2kw8HoYSy+OhfxbFBWfV9GVdTGUbVgg0RyoFzvF7/AvcRUr7UNH7lAU/ECOHZiA4LVMPxRaSCaIfaiog0Oq3kp8ImIQggJi/0iRbR+Y2Q5sywQd2jhRcCpNDxgNYhB0cs9xQ+QlMpVxbKsGcYSeUwAc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767383498; c=relaxed/simple; bh=XO8nfIIMIOeyft3TWTJEGlqdi7kY1s5i+DL11uhX8Lg=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=GkopBgYFYmNXWAFb765x+HEcloc7D+y2G2JzlDik3tcoSZd5aqtYdzC4OnPi/ysxTHivT/z0Op0KLA2E1nGvr7pC2D095Q/MnY6cWnlSGM47pJPWXyZoNkEh5w3nrDZCj+OWqjc9o2LLEA5mvbpMND4zJeN94yMgDVM3zmCVeqY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hAb1q+jE; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="hAb1q+jE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 66F3DC116B1; Fri, 2 Jan 2026 19:51:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1767383497; bh=XO8nfIIMIOeyft3TWTJEGlqdi7kY1s5i+DL11uhX8Lg=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=hAb1q+jE2b+lEiRJ0WK++1HFWc9dkYEVpwFVUs5HTGYm+VObcrxcUeCK19rVjKZKB Kwitk7mty4sBFjnRZitUAjGJm4U4/0ri0jh4IA+vklCZkAMAcMCZ+qwXQtHT1BKK4g dh3ppOKFCWGNtsyh5GwrS2nnctkKo+uoIMOaDBULIzxFeBHr8yQ2xt3D6oOwCn/stY yji561vHe7LEdb7HBULKlbxkV6KjoXvF5xA0xNS1GiNEPkJ2Qm0MLOGd25qErhhGVn rlH2UD+yYuGtjEeMzWELfQgtYtHZohw/VMlm6WWti8OHs4Bknd4gaE/xAtQPgCatRD AZ23rmbgVI21g== Date: Fri, 2 Jan 2026 11:51:36 -0800 From: Jakub Kicinski To: Wen Gu Cc: Thomas Gleixner , Richard Cochran , andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, pabeni@redhat.com, xuanzhuo@linux.alibaba.com, dust.li@linux.alibaba.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net-next v5 1/2] ptp: introduce Alibaba CIPU PHC driver Message-ID: <20260102115136.239806fa@kernel.org> In-Reply-To: <957500e7-5753-488d-872d-4dbbdcac0bb2@linux.alibaba.com> References: <20251030121314.56729-1-guwen@linux.alibaba.com> <20251030121314.56729-2-guwen@linux.alibaba.com> <20251031165820.70353b68@kernel.org> <8a74f801-1de5-4a1d-adc7-66a91221485d@linux.alibaba.com> <20251105162429.37127978@kernel.org> <34b30157-6d67-46ec-abde-da9087fbf318@linux.alibaba.com> <20251127083610.6b66a728@kernel.org> <20251128102437.7657f88f@kernel.org> <9a75e3b2-4d1c-4911-81e4-cab988c24b77@linux.alibaba.com> <20251213075028.2f570f23@kernel.org> <20251216135848.174e010f@kernel.org> <957500e7-5753-488d-872d-4dbbdcac0bb2@linux.alibaba.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Mon, 22 Dec 2025 15:18:19 +0800 Wen Gu wrote: > The same applies to ptp_cipu, since it is already used and relies on > exposing /dev/ptpX. IIUC you mean that the driver is already used downstream and abandoning PTP will break the OOT users? This is a non-argument upstream. > Given the historical baggage, it seems better to keep using the > existing ptp framework, but separate these pure phc drivers into a > new subsystem with a dedicated directory (e.g. drivers/phc/) and a > MAINTAINERS entry, moving them out of the netdev maintenance scope. > This should also address the concern that these pure phc drivers are > not a good fit to be maintained under the networking subsystem. I'd rather you left PTP completely alone with your funny read only clocks. Please and thank you.