From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9997EF36BA0 for ; Fri, 10 Apr 2026 02:59:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Subject:Cc:To: From:Date:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=MLXmBUt+5y/LI0drG1RByAqBpv7xchmUlLNdG+XBJsQ=; b=nOUZTuMIw6rD42XtATORT3IWVB DqhZ9oHwdQQBOih2+d8SNmi4i1FuRZrJfeH3xIYpciQdDcxAvFRFmEfJ76xqXMXlVAmEGG3ZMjpCJ 1kiQMdBDG9h1gqkrChbtZpLndlzWACHwiqK+xztLTQAUjqFRoxOUsD12uqs7fOQOizCy+lkOnTfQa hxTHIk2dpY87mFC6u7DYY6RIPp67RgBDyX+sWMbj+08nO04dDMb2uigByghPEaTCLpsDQG2Q5kb2Y S5fJmS4dwRMErQtYCdrXwvRg+lnBwvRBcvfNptvakLLlRKSS6jihd2t4AExSPs++fOM0wvyOox/Z3 spzs+LVA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wB267-0000000BVfC-3E0u; Fri, 10 Apr 2026 02:59:55 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wB264-0000000BVeZ-2RW5; Fri, 10 Apr 2026 02:59:53 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 244A243F56; Fri, 10 Apr 2026 02:59:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 401BEC4CEF7; Fri, 10 Apr 2026 02:59:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775789992; bh=MLXmBUt+5y/LI0drG1RByAqBpv7xchmUlLNdG+XBJsQ=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=ET+FxGEvFyK5aaK+ipK1ANSh6vQiJyeax0/cD9WmrzLEe2QVyFmRKPWqSObyd+qTJ QSzcUj6m9S1xblsfE44tUvjCAFeYDYC9srazHTj/qsl1mlRTo8vOed9ZeIdSZq6j7D pudl4tcKOjQ2p5tL1gDhD9kNHYDRC4/08SXGsCQlPrs2owo9yVSh3EjVx2JgOqXO5M ajsOf01oae4IUhmEzFaTSw25ZjdD4mYq3oljBQ4Ou3QbodLrpUdlGjyZgIb6Z5XONz IqOPpMtRgIKjzB4McPOuCK5kiTFI53fID9YsKYugOxt2j3/HAkavSgktmlQwtn39rz fVv4wwHryhw8A== Date: Thu, 9 Apr 2026 19:59:50 -0700 From: Jakub Kicinski To: Lorenzo Bianconi Cc: Andrew Lunn , "David S. Miller" , Eric Dumazet , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Christian Marangi , Benjamin Larsson , linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, Xuegang Lu Subject: Re: [PATCH net-next v3 00/12] net: airoha: Support multiple net_devices connected to the same GDM port Message-ID: <20260409195950.74e4bc97@kernel.org> In-Reply-To: <20260406-airoha-eth-multi-serdes-v3-0-ab6ea49d59ff@kernel.org> References: <20260406-airoha-eth-multi-serdes-v3-0-ab6ea49d59ff@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260409_195952_650647_1591DDA3 X-CRM114-Status: UNSURE ( 7.99 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Mon, 06 Apr 2026 12:34:05 +0200 Lorenzo Bianconi wrote: > EN7581 or AN7583 SoCs support connecting multiple external SerDes (e.g. > Ethernet or USB SerDes) to GDM3 or GDM4 ports via a hw arbiter that > manages the traffic in a TDM manner. As a result multiple net_devices can > connect to the same GDM{3,4} port and there is a theoretical "1:n" > relation between GDM ports and net_devices. Looks like this driver uses page pool. If you're sharing the same page pool across multiple netdevs it must not be linked to a netdev.