From patchwork Mon Apr 12 03:42:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qingfang Deng X-Patchwork-Id: 12196731 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1C34CC43460 for ; Mon, 12 Apr 2021 03:42:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E8BF06120D for ; Mon, 12 Apr 2021 03:42:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236610AbhDLDnN (ORCPT ); Sun, 11 Apr 2021 23:43:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54084 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236366AbhDLDnM (ORCPT ); Sun, 11 Apr 2021 23:43:12 -0400 Received: from mail-pg1-x534.google.com (mail-pg1-x534.google.com [IPv6:2607:f8b0:4864:20::534]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B1CE0C061574; Sun, 11 Apr 2021 20:42:55 -0700 (PDT) Received: by mail-pg1-x534.google.com with SMTP id h25so8334766pgm.3; Sun, 11 Apr 2021 20:42:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=yZ5W7oXdZ8SNpPNFFttOnaomBLVx/4n5LPa5t4ANWJ0=; b=Q7B9AjeF9NMppAnZgPBNLnRMqmdegsCdvq2YpRpbdrse+fuZaDv5zijjMghvi4MwlL fe1IVZN1jikUJWBsSUm5yl7bGGePathlCm5raqrH3Az1+n/A4YFEvCG0JqRdl9aX31r5 ByWNu2Sg/Y1sZD3EIod8MP2xOwdocVzTODczQncAueE6bhp6RZvpji2g+GTN6EYivneg roU/1XdizOS0Bw9+biWE0pI0pbFedGIUaET2ZemZ4yBY/aCNdDestY0EXNWpEWPZRlE4 GJdDTJ785fYMAI611M22NEVDDptx2qGuYyQj/2/EEfnmcnsOycijsn4jQi3l+3HWqIq9 WmKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=yZ5W7oXdZ8SNpPNFFttOnaomBLVx/4n5LPa5t4ANWJ0=; b=BvSosH+woSCLbm0uniHTn0FgPsGAPrMDijyrh6OXh7aucFxebUhk13vqIXgCN9TcHa j7h5CwquqwOBmuNYmrzY0Wcz+dPMOaq4rBr9fgLq5sfqjie4GYUbskA1QPGH0T6NvOJ2 SYoO1k0kNhddvX91I9IkDBYU4KVuYlluunhHkm+0/8oGiwvrbs+9Grc85+TH3V3v2xOs dDZN78ab5n6ZxS1JCV+hTd6ax4w9atERSIuR9yQj4R4i9CRz5hp3XEc6GaPCgGCFa+cw LfFwz/ME39VAzz9++qkXRVOqQZ/5/O4U1EpdLcq4Oa7qfJOM0mSb6s8LTYwvGVoO9uSw 460A== X-Gm-Message-State: AOAM532T11eP+eqHTQ7/+YGi7ZY6dTAqQrQ7d2owQAc8wT1WAk7DS/v8 hNRfHSxVX7JLV5fey2NbVW0= X-Google-Smtp-Source: ABdhPJwsvYhO4IziErJNUYCF3KDQeyuFzX4kE9/W+LyP7lyWchgraQcVo8Bm+Ia4zNVEPLv3dLDbmA== X-Received: by 2002:aa7:8817:0:b029:24e:bb8:46e1 with SMTP id c23-20020aa788170000b029024e0bb846e1mr1293952pfo.0.1618198975316; Sun, 11 Apr 2021 20:42:55 -0700 (PDT) Received: from localhost.localdomain ([138.197.212.246]) by smtp.gmail.com with ESMTPSA id v22sm5387185pff.105.2021.04.11.20.42.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 11 Apr 2021 20:42:54 -0700 (PDT) From: DENG Qingfang To: "David S. Miller" , Andrew Lunn , Florian Fainelli , Heiner Kallweit , Jakub Kicinski , Landen Chao , Matthias Brugger , Russell King , Sean Wang , Vivien Didelot , Vladimir Oltean , Rob Herring , Linus Walleij , Greg Kroah-Hartman , Sergio Paracuellos , linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-staging@lists.linux.dev, devicetree@vger.kernel.org, netdev@vger.kernel.org Cc: Weijie Gao , Chuanhong Guo , =?utf-8?q?Ren=C3=A9_van_Dorst?= , Frank Wunderlich , Thomas Gleixner , Marc Zyngier Subject: [RFC v4 net-next 1/4] net: phy: add MediaTek PHY driver Date: Mon, 12 Apr 2021 11:42:34 +0800 Message-Id: <20210412034237.2473017-2-dqfext@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210412034237.2473017-1-dqfext@gmail.com> References: <20210412034237.2473017-1-dqfext@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC Add support for MediaTek PHYs found in MT7530 and MT7531 switches. The initialization procedure is from the vendor driver, but due to lack of documentation, the function of some register values remains unknown. Signed-off-by: DENG Qingfang --- RFC v3 -> RFC v4: - Remove unused include. drivers/net/phy/Kconfig | 5 ++ drivers/net/phy/Makefile | 1 + drivers/net/phy/mediatek.c | 111 +++++++++++++++++++++++++++++++++++++ 3 files changed, 117 insertions(+) create mode 100644 drivers/net/phy/mediatek.c diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index a615b3660b05..edd858cec9ec 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -207,6 +207,11 @@ config MARVELL_88X2222_PHY Support for the Marvell 88X2222 Dual-port Multi-speed Ethernet Transceiver. +config MEDIATEK_PHY + tristate "MediaTek PHYs" + help + Supports the MediaTek switch integrated PHYs. + config MICREL_PHY tristate "Micrel PHYs" help diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index de683e3abe63..9ed7dbab7770 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -64,6 +64,7 @@ obj-$(CONFIG_LXT_PHY) += lxt.o obj-$(CONFIG_MARVELL_10G_PHY) += marvell10g.o obj-$(CONFIG_MARVELL_PHY) += marvell.o obj-$(CONFIG_MARVELL_88X2222_PHY) += marvell-88x2222.o +obj-$(CONFIG_MEDIATEK_PHY) += mediatek.o obj-$(CONFIG_MESON_GXL_PHY) += meson-gxl.o obj-$(CONFIG_MICREL_KS8995MA) += spi_ks8995.o obj-$(CONFIG_MICREL_PHY) += micrel.o diff --git a/drivers/net/phy/mediatek.c b/drivers/net/phy/mediatek.c new file mode 100644 index 000000000000..1627b7c04345 --- /dev/null +++ b/drivers/net/phy/mediatek.c @@ -0,0 +1,111 @@ +// SPDX-License-Identifier: GPL-2.0+ +#include +#include + +#define MTK_EXT_PAGE_ACCESS 0x1f +#define MTK_PHY_PAGE_STANDARD 0x0000 +#define MTK_PHY_PAGE_EXTENDED 0x0001 +#define MTK_PHY_PAGE_EXTENDED_2 0x0002 +#define MTK_PHY_PAGE_EXTENDED_3 0x0003 +#define MTK_PHY_PAGE_EXTENDED_2A30 0x2a30 +#define MTK_PHY_PAGE_EXTENDED_52B5 0x52b5 + +static int mtk_phy_read_page(struct phy_device *phydev) +{ + return __phy_read(phydev, MTK_EXT_PAGE_ACCESS); +} + +static int mtk_phy_write_page(struct phy_device *phydev, int page) +{ + return __phy_write(phydev, MTK_EXT_PAGE_ACCESS, page); +} + +static void mtk_phy_config_init(struct phy_device *phydev) +{ + /* Disable EEE */ + phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, 0); + + /* Enable HW auto downshift */ + phy_modify_paged(phydev, MTK_PHY_PAGE_EXTENDED, 0x14, 0, BIT(4)); + + /* Increase SlvDPSready time */ + phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_52B5); + __phy_write(phydev, 0x10, 0xafae); + __phy_write(phydev, 0x12, 0x2f); + __phy_write(phydev, 0x10, 0x8fae); + phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0); + + /* Adjust 100_mse_threshold */ + phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x123, 0xffff); + + /* Disable mcc */ + phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xa6, 0x300); +} + +static int mt7530_phy_config_init(struct phy_device *phydev) +{ + mtk_phy_config_init(phydev); + + /* Increase post_update_timer */ + phy_write_paged(phydev, MTK_PHY_PAGE_EXTENDED_3, 0x11, 0x4b); + + return 0; +} + +static int mt7531_phy_config_init(struct phy_device *phydev) +{ + if (phydev->interface != PHY_INTERFACE_MODE_INTERNAL) + return -EINVAL; + + mtk_phy_config_init(phydev); + + /* PHY link down power saving enable */ + phy_set_bits(phydev, 0x17, BIT(4)); + phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, 0xc6, 0x300); + + /* Set TX Pair delay selection */ + phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x13, 0x404); + phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x14, 0x404); + + return 0; +} + +static struct phy_driver mtk_phy_driver[] = { + { + PHY_ID_MATCH_EXACT(0x03a29412), + .name = "MediaTek MT7530 PHY", + .config_init = mt7530_phy_config_init, + /* Interrupts are handled by the switch, not the PHY + * itself. + */ + .config_intr = genphy_no_config_intr, + .handle_interrupt = genphy_handle_interrupt_no_ack, + .read_page = mtk_phy_read_page, + .write_page = mtk_phy_write_page, + }, + { + PHY_ID_MATCH_EXACT(0x03a29441), + .name = "MediaTek MT7531 PHY", + .config_init = mt7531_phy_config_init, + /* Interrupts are handled by the switch, not the PHY + * itself. + */ + .config_intr = genphy_no_config_intr, + .handle_interrupt = genphy_handle_interrupt_no_ack, + .read_page = mtk_phy_read_page, + .write_page = mtk_phy_write_page, + }, +}; + +module_phy_driver(mtk_phy_driver); + +static struct mdio_device_id __maybe_unused mtk_phy_tbl[] = { + { PHY_ID_MATCH_VENDOR(0x03a29400) }, + { } +}; + +MODULE_DESCRIPTION("MediaTek switch integrated PHY driver"); +MODULE_AUTHOR("DENG, Qingfang "); +MODULE_LICENSE("GPL"); + +MODULE_DEVICE_TABLE(mdio, mtk_phy_tbl);