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 phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7650EC433EF for ; Thu, 12 May 2022 00:21:26 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 574298438A; Thu, 12 May 2022 02:20:49 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=gateworks.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 110AD84351; Thu, 12 May 2022 02:20:24 +0200 (CEST) Received: from finn.localdomain (finn.gateworks.com [108.161.129.64]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 187FA8434B for ; Thu, 12 May 2022 02:20:14 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=gateworks.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=tharvey@gateworks.com Received: from 068-189-091-139.biz.spectrum.com ([68.189.91.139] helo=tharvey.pdc.gateworks.com) by finn.localdomain with esmtp (Exim 4.93) (envelope-from ) id 1nowYt-00DBuZ-CJ; Thu, 12 May 2022 00:20:11 +0000 From: Tim Harvey To: Joe Hershberger , Ramon Fried , Vladimir Oltean , u-boot@lists.denx.de, Stefano Babic , Fabio Estevam , "NXP i . MX U-Boot Team" , =?UTF-8?q?Marek=20Beh=C3=BAn?= Cc: Chris Packham , Anatolij Gustschin , Tim Harvey Subject: [PATCH 6/8] net: fec: add support for DM_MDIO Date: Wed, 11 May 2022 17:20:01 -0700 Message-Id: <20220512002003.16886-7-tharvey@gateworks.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220512002003.16886-1-tharvey@gateworks.com> References: <20220512002003.16886-1-tharvey@gateworks.com> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.5 at phobos.denx.de X-Virus-Status: Clean Add support for DM_MDIO by registering a UCLASS_MDIO driver and attempting to use it. This is necessary if wanting to use a DSA driver for example hanging off of the FEC MAC. Care is taken to fallback to non DM_MDIO mii bus as several boards define DM_MDIO without having the proper device-tree configuration necessary such as an mdio subnode, a phy-mode prop, and either a valid phy-handle prop or fixed-phy subnode which will cause dm_eth_phy_connect() to fail. Signed-off-by: Tim Harvey --- v2: - fix fallback mechanism for legacy dt's that do not have phy-handle and mdio subnode --- drivers/net/fec_mxc.c | 90 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 88 insertions(+), 2 deletions(-) diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c index a623a5c45e4d..9553699e3306 100644 --- a/drivers/net/fec_mxc.c +++ b/drivers/net/fec_mxc.c @@ -30,6 +30,8 @@ #include #include #include +#include +#include #include "fec_mxc.h" #include @@ -1025,6 +1027,81 @@ struct mii_dev *fec_get_miibus(ulong base_addr, int dev_id) return bus; } +#ifdef CONFIG_DM_MDIO +struct dm_fec_mdio_priv { + struct ethernet_regs *regs; +}; + +static int dm_fec_mdio_read(struct udevice *dev, int addr, int devad, int reg) +{ + struct dm_fec_mdio_priv *priv = dev_get_priv(dev); + + return fec_mdio_read(priv->regs, addr, reg); +} + +static int dm_fec_mdio_write(struct udevice *dev, int addr, int devad, int reg, u16 data) +{ + struct dm_fec_mdio_priv *priv = dev_get_priv(dev); + + return fec_mdio_write(priv->regs, addr, reg, data); +} + +static const struct mdio_ops dm_fec_mdio_ops = { + .read = dm_fec_mdio_read, + .write = dm_fec_mdio_write, +}; + +static int dm_fec_mdio_probe(struct udevice *dev) +{ + struct dm_fec_mdio_priv *priv = dev_get_priv(dev); + + priv->regs = (struct ethernet_regs *)ofnode_get_addr(dev_ofnode(dev->parent)); + + return 0; +} + +U_BOOT_DRIVER(fec_mdio) = { + .name = "fec_mdio", + .id = UCLASS_MDIO, + .probe = dm_fec_mdio_probe, + .ops = &dm_fec_mdio_ops, + .priv_auto = sizeof(struct dm_fec_mdio_priv), +}; + +static int dm_fec_bind_mdio(struct udevice *dev) +{ + struct udevice *mdiodev; + const char *name; + ofnode mdio; + int ret = -ENODEV; + + /* for a UCLASS_MDIO driver we need to bind and probe manually + * for an internal MDIO bus that has no dt compatible of its own + */ + ofnode_for_each_subnode(mdio, dev_ofnode(dev)) { + name = ofnode_get_name(mdio); + + if (strcmp(name, "mdio")) + continue; + + ret = device_bind_driver_to_node(dev, "fec_mdio", + name, mdio, &mdiodev); + if (ret) { + printf("%s bind %s failed: %d\n", __func__, name, ret); + break; + } + + /* need to probe it as there is no compatible to do so */ + ret = uclass_get_device_by_ofnode(UCLASS_MDIO, mdio, &mdiodev); + if (!ret) + return 0; + printf("%s probe %s failed: %d\n", __func__, name, ret); + } + + return ret; +} +#endif + static int fecmxc_read_rom_hwaddr(struct udevice *dev) { struct fec_priv *priv = dev_get_priv(dev); @@ -1088,7 +1165,7 @@ static int device_get_phy_addr(struct fec_priv *priv, struct udevice *dev) static int fec_phy_init(struct fec_priv *priv, struct udevice *dev) { - struct phy_device *phydev; + struct phy_device *phydev = NULL; int addr; addr = device_get_phy_addr(priv, dev); @@ -1096,7 +1173,10 @@ static int fec_phy_init(struct fec_priv *priv, struct udevice *dev) addr = CONFIG_FEC_MXC_PHYADDR; #endif - phydev = phy_connect(priv->bus, addr, dev, priv->interface); + if (IS_ENABLED(CONFIG_DM_MDIO)) + phydev = dm_eth_phy_connect(dev); + if (!phydev) + phydev = phy_connect(priv->bus, addr, dev, priv->interface); if (!phydev) return -ENODEV; @@ -1227,6 +1307,12 @@ static int fecmxc_probe(struct udevice *dev) priv->dev_id = dev_seq(dev); + if (IS_ENABLED(CONFIG_DM_MDIO)) { + ret = dm_fec_bind_mdio(dev); + if (ret && ret != -ENODEV) + return ret; + } + #ifdef CONFIG_DM_ETH_PHY bus = eth_phy_get_mdio_bus(dev); #endif -- 2.17.1