From patchwork Mon Mar 27 21:35:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13190125 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 19297C76195 for ; Mon, 27 Mar 2023 21:36:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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:In-Reply-To:References: List-Owner; bh=EHEG13T5xWG9tf7fvbtU5/H+bwIZT31qfYbPrqIKeHs=; b=Ad9lCmjOroaN5v 6BfTmHCI+pen6h2UOYBmtLQlwd6auJnSExAavehnj+s7PbFH7gyas451nAtGYoh/SUEsbvGwIqIUc NzGCoSe5vMNlEhLz9HUJfXL7byk5iDUr7VMcnO/3dUTjMMRsp6+u2Q9OdrftOMro7fEL5GqHxzZeE Cto/XU3GQql7DaBj6ZDv9tIfLLrCRu18kyyY1WS8kxrDDC4cTseMb+yDtQGrzzQlDuXHc2gqKYV7e 7IxFUhbBnuLrZNKMZ7n6yhythW6VLEKLLBZ+cMkDQzAt8AGTaKCAPkObDM75FS8b5umNNRVSDumte B7Aj0maGAk5trRbEkiRg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pguUy-00CQG3-2m; Mon, 27 Mar 2023 21:35:28 +0000 Received: from fudo.makrotopia.org ([2a07:2ec0:3002::71]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pguUv-00CQDn-1s; Mon, 27 Mar 2023 21:35:26 +0000 Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1pguUj-0008Kx-2f; Mon, 27 Mar 2023 23:35:13 +0200 Date: Mon, 27 Mar 2023 22:35:00 +0100 From: Daniel Golle To: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Andrew Lunn , Florian Fainelli , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Matthias Brugger , AngeloGioacchino Del Regno , Sean Wang , Landen Chao , DENG Qingfang , Philipp Zabel Cc: Sam Shih , Lorenzo Bianconi , John Crispin , Felix Fietkau Subject: [RFC PATCH net-next 0/2] net: dsa: add support for MT7988 Message-ID: MIME-Version: 1.0 Content-Disposition: inline X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230327_143525_618751_81F81C2B X-CRM114-Status: GOOD ( 10.55 ) 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 The MediaTek MT7988 SoC comes with a built-in switch very similar to previous MT7530 and MT7531. However, the switch address space is mapped into the SoCs memory space rather than being connected via MDIO. Using MMIO simplifies register access and also removes the need for a bus lock, and for that reason also makes interrupt handling more light-weight. Note that this is different from previous SoCs like MT7621 and MT7623N which also came with an integrated MT7530-like switch which yet had to be accessed via MDIO. split-off the part of the driver registering an MDIO driver, then add another module acting as MMIO/platform driver. Daniel Golle (2): net: dsa: mt7530: split-off MDIO driver net: dsa: mt7530: introduce MMIO driver for MT7988 SoC drivers/net/dsa/Kconfig | 16 +- drivers/net/dsa/Makefile | 4 +- drivers/net/dsa/mt7530-mdio.c | 165 +++++++++++++++ drivers/net/dsa/mt7530-mmio.c | 126 ++++++++++++ drivers/net/dsa/mt7530.c | 375 ++++++++++++++++++---------------- drivers/net/dsa/mt7530.h | 39 ++-- 6 files changed, 526 insertions(+), 199 deletions(-) create mode 100644 drivers/net/dsa/mt7530-mdio.c create mode 100644 drivers/net/dsa/mt7530-mmio.c