From patchwork Tue Mar 28 22:16:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13191633 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 8E067C76196 for ; Tue, 28 Mar 2023 22:16:47 +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-Type:MIME-Version: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=2H9gLauNFrO6dQLJmCM4+M0MVUVs65buEAcWQQ7v0MI=; b=beqGzbASB2FX7H1jDmAq+J8pm8 s8muNOjDF8zoKZwbC8WKtZOX0KwAFU4eHDbzM4WDnqIhGTAXDVi5lYnEIwYX30cxVp8DM2nH/ZVUg +QIpdVg07LKa/zBZ4LbninXqv0kBL1w1IefCt3SicUHePcANg2KLMd0uLTHYLeOwfuaOKPPRVgHHO zJbPHNzL4wpRMQKxlGyBse/htDAMcnd9u9azOn9n1u9DBC1Pa1SfOs3X11Hc5Gt4Jqj0llHGYmENa Y3X15ezcGO+Xo3XxM6D3+rg6BjAncrQ/zj9YJdtvmHPyDz7Iw/EbdhcKtC52dnP8rvere5fcAdtIV 0chyEX4g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1phHcN-00FzTb-21; Tue, 28 Mar 2023 22:16:39 +0000 Received: from fudo.makrotopia.org ([2a07:2ec0:3002::71]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1phHcL-00FzSs-1c; Tue, 28 Mar 2023 22:16:38 +0000 Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1phHc8-0003Zs-2F; Wed, 29 Mar 2023 00:16:24 +0200 Date: Tue, 28 Mar 2023 23:16:17 +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 v2 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-20230328_151637_535456_08B40AFE X-CRM114-Status: GOOD ( 11.21 ) 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 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. Changes since initial RFC: * use regmap for register access and move register access to bus- specific driver * move initialization of MT7531 SGMII PCS to MDIO 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 | 309 ++++++++++++++++++++++ drivers/net/dsa/mt7530-mmio.c | 143 ++++++++++ drivers/net/dsa/mt7530.c | 479 ++++++++++++++-------------------- drivers/net/dsa/mt7530.h | 38 +-- 6 files changed, 686 insertions(+), 303 deletions(-) create mode 100644 drivers/net/dsa/mt7530-mdio.c create mode 100644 drivers/net/dsa/mt7530-mmio.c