From patchwork Mon Aug 23 07:37:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 501748 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=-16.8 required=3.0 tests=BAYES_00, 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 2D1A3C4320A for ; Mon, 23 Aug 2021 07:40:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0E33F6135A for ; Mon, 23 Aug 2021 07:40:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235221AbhHWHlA (ORCPT ); Mon, 23 Aug 2021 03:41:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47372 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235175AbhHWHk6 (ORCPT ); Mon, 23 Aug 2021 03:40:58 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6124AC061575 for ; Mon, 23 Aug 2021 00:40:16 -0700 (PDT) Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mI4Wn-000376-ML; Mon, 23 Aug 2021 09:37:53 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1mI4Wm-0005q9-Ol; Mon, 23 Aug 2021 09:37:52 +0200 From: Oleksij Rempel To: "David S. Miller" , Jakub Kicinski , Andrew Lunn , Heiner Kallweit , Russell King Cc: Oleksij Rempel , Jarkko Nikula , kernel@pengutronix.de, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH net v2 1/2] net: usb: asix: ax88772: move embedded PHY detection as early as possible Date: Mon, 23 Aug 2021 09:37:47 +0200 Message-Id: <20210823073748.22384-2-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210823073748.22384-1-o.rempel@pengutronix.de> References: <20210823073748.22384-1-o.rempel@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Some HW revisions need additional MAC configuration before the embedded PHY can be enabled. If this is not done, we won't be able to get response from the internal PHY. This issue was detected on chipcode == AX_AX88772_CHIPCODE variant, where ax88772_hw_reset() was executed with missing embd_phy flag. Fixes: e532a096be0e ("net: usb: asix: ax88772: add phylib support") Reported-by: Jarkko Nikula Tested-by: Jarkko Nikula Signed-off-by: Oleksij Rempel --- drivers/net/usb/asix.h | 1 + drivers/net/usb/asix_devices.c | 41 +++++++++++++++++----------------- 2 files changed, 21 insertions(+), 21 deletions(-) diff --git a/drivers/net/usb/asix.h b/drivers/net/usb/asix.h index e1994a246122..2a1e31defe71 100644 --- a/drivers/net/usb/asix.h +++ b/drivers/net/usb/asix.h @@ -184,6 +184,7 @@ struct asix_common_private { struct phy_device *phydev; u16 phy_addr; char phy_name[20]; + bool embd_phy; }; extern const struct driver_info ax88172a_info; diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c index 2c115216420a..15460d419e3f 100644 --- a/drivers/net/usb/asix_devices.c +++ b/drivers/net/usb/asix_devices.c @@ -354,24 +354,23 @@ static int ax88772_reset(struct usbnet *dev) static int ax88772_hw_reset(struct usbnet *dev, int in_pm) { struct asix_data *data = (struct asix_data *)&dev->data; - int ret, embd_phy; + struct asix_common_private *priv = dev->driver_priv; u16 rx_ctl; + int ret; ret = asix_write_gpio(dev, AX_GPIO_RSE | AX_GPIO_GPO_2 | AX_GPIO_GPO2EN, 5, in_pm); if (ret < 0) goto out; - embd_phy = ((dev->mii.phy_id & 0x1f) == 0x10 ? 1 : 0); - - ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, embd_phy, + ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, priv->embd_phy, 0, 0, NULL, in_pm); if (ret < 0) { netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret); goto out; } - if (embd_phy) { + if (priv->embd_phy) { ret = asix_sw_reset(dev, AX_SWRESET_IPPD, in_pm); if (ret < 0) goto out; @@ -449,17 +448,16 @@ static int ax88772_hw_reset(struct usbnet *dev, int in_pm) static int ax88772a_hw_reset(struct usbnet *dev, int in_pm) { struct asix_data *data = (struct asix_data *)&dev->data; - int ret, embd_phy; + struct asix_common_private *priv = dev->driver_priv; u16 rx_ctl, phy14h, phy15h, phy16h; u8 chipcode = 0; + int ret; ret = asix_write_gpio(dev, AX_GPIO_RSE, 5, in_pm); if (ret < 0) goto out; - embd_phy = ((dev->mii.phy_id & 0x1f) == 0x10 ? 1 : 0); - - ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, embd_phy | + ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, priv->embd_phy | AX_PHYSEL_SSEN, 0, 0, NULL, in_pm); if (ret < 0) { netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret); @@ -683,12 +681,6 @@ static int ax88772_init_phy(struct usbnet *dev) struct asix_common_private *priv = dev->driver_priv; int ret; - ret = asix_read_phy_addr(dev, true); - if (ret < 0) - return ret; - - priv->phy_addr = ret; - snprintf(priv->phy_name, sizeof(priv->phy_name), PHY_ID_FMT, priv->mdio->id, priv->phy_addr); @@ -716,6 +708,12 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) int ret, i; u32 phyid; + priv = devm_kzalloc(&dev->udev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + dev->driver_priv = priv; + usbnet_get_endpoints(dev, intf); /* Maybe the boot loader passed the MAC address via device tree */ @@ -751,6 +749,13 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) dev->net->needed_headroom = 4; /* cf asix_tx_fixup() */ dev->net->needed_tailroom = 4; /* cf asix_tx_fixup() */ + ret = asix_read_phy_addr(dev, true); + if (ret < 0) + return ret; + + priv->phy_addr = ret; + priv->embd_phy = ((priv->phy_addr & 0x1f) == 0x10 ? true : false); + asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG, 0, 0, 1, &chipcode, 0); chipcode &= AX_CHIPCODE_MASK; @@ -773,12 +778,6 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) dev->rx_urb_size = 2048; } - priv = devm_kzalloc(&dev->udev->dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - - dev->driver_priv = priv; - priv->presvd_phy_bmcr = 0; priv->presvd_phy_advertise = 0; if (chipcode == AX_AX88772_CHIPCODE) {