From patchwork Tue Mar 18 22:06:52 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans-Frieder Vogt via B4 Relay X-Patchwork-Id: 14021635 X-Patchwork-Delegate: kuba@kernel.org Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5BE022063DB; Tue, 18 Mar 2025 22:07:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742335638; cv=none; b=XaNG/ULv8K8wipYfHHtyh7P74QMT/piRM+SRKmOdUhH4ahrf3elx3QfhOVh8kvje/fQpwyA/lG8sdIJw755fL3vXzxUaB24crlyxHGSblAu0SNVjnGvtsVlrDQgDVvF2tFbLKVovLNyL2xBe+CjNPXHwgLDinFeRN6Tu7kd6EY0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742335638; c=relaxed/simple; bh=z15Ls+N2f4qhQa8zHLA/8pAS/OD9DivM6Ks6EyIuxMQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=p21br/o2xW5EuTPhHS/5bT2gNPn5dYu6lF8Qs4NoT+Qp6QUkAk3nhCjuX7taS/TioUdf7vV5Nooezem7O6bc3Rqe2pqQf6nmUQxugF4lt7TWHFlDgQC3eNHeY8vTNgVwYhwqu/P98hgeWRsEoWLoM8Aa29sL1joEqDMi4yYGAv4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=sYuyM7eY; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="sYuyM7eY" Received: by smtp.kernel.org (Postfix) with ESMTPS id 2E51FC4CEF0; Tue, 18 Mar 2025 22:07:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1742335638; bh=z15Ls+N2f4qhQa8zHLA/8pAS/OD9DivM6Ks6EyIuxMQ=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=sYuyM7eYgOIg1TUayAEGE3wv1u1h98toEAI7iwnVwnC9TFfSX1i5gSYsrbN9/W/Dm bQg+ZapJ6tAlhRHXBTXtIWjdERy6Jn2RfgBdq3fdkcHS+B1MPqGcy5F3LDl3HRVnun z6xk31XrJYvBnW5UNGV0CixMrPgVC3RAHRR4wrcdagoQTf2QV9f5lim9leemNc9Gsg XACQd4Au/fM+TcQyavWzgVoNrHRvjjz/nz/8kYRwobOCy4WkF5JXx042fKGt5p8Jy/ NUtFr25cjz6gSkaulUHc5m24ib9jmE7MmUlkLWJRTS1WXqn0mDs4q7M+0dcB0yReQZ m4hiBrNYs3FWQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 19869C35FF8; Tue, 18 Mar 2025 22:07:18 +0000 (UTC) From: Hans-Frieder Vogt via B4 Relay Date: Tue, 18 Mar 2025 23:06:52 +0100 Subject: [PATCH net-next v6 1/7] net: phy: Add swnode support to mdiobus_scan Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250318-tn9510-v3a-v6-1-808a9089d24b@gmx.net> References: <20250318-tn9510-v3a-v6-0-808a9089d24b@gmx.net> In-Reply-To: <20250318-tn9510-v3a-v6-0-808a9089d24b@gmx.net> To: Andrew Lunn , Heiner Kallweit , Russell King , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , FUJITA Tomonori , Andrew Lunn Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Hans-Frieder Vogt X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1742335636; l=1936; i=hfdevel@gmx.net; s=20240915; h=from:subject:message-id; bh=eboV90jxD+Bku0BOXjDGCNU60DTUE9kSyEbR0D3C8dU=; b=BBFK0D+bzMirEJuwUbn+Gj2hKJBmo7eC8cXE3v2eeiURfLhONRulpN0Zsg/XF5SwGa3ClvjAX ow9ecsbYkWTBOEDip/IHJx67lDAa1ndFEGvYNzuaHiJHMvBG7qnFu2c X-Developer-Key: i=hfdevel@gmx.net; a=ed25519; pk=s3DJ3DFe6BJDRAcnd7VGvvwPXcLgV8mrfbpt8B9coRc= X-Endpoint-Received: by B4 Relay for hfdevel@gmx.net/20240915 with auth_id=209 X-Original-From: Hans-Frieder Vogt Reply-To: hfdevel@gmx.net X-Patchwork-Delegate: kuba@kernel.org From: Hans-Frieder Vogt This patch will allow to use a swnode/fwnode defined for a phy_device. The MDIO bus (mii_bus) needs to contain nodes for the PHY devices, named "ethernet-phy@i", with i being the MDIO address (0 .. PHY_MAX_ADDR - 1). The fwnode is only attached to the phy_device if there isn't already an fwnode attached. fwnode_get_named_child_node will increase the usage counter of the fwnode. However, no new code is needed to decrease the counter again, since this is already implemented in the phy_device_release function. Signed-off-by: Hans-Frieder Vogt --- drivers/net/phy/mdio_bus.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 7e2f10182c0cf37bef4cea1820863f047b5cb466..ede596c1a69d1b2b986e9eef51c3beb4a5fbc805 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -551,6 +551,8 @@ static int mdiobus_create_device(struct mii_bus *bus, static struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr, bool c45) { struct phy_device *phydev = ERR_PTR(-ENODEV); + struct fwnode_handle *fwnode; + char node_name[16]; int err; phydev = get_phy_device(bus, addr, c45); @@ -562,6 +564,18 @@ static struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr, bool c45) */ of_mdiobus_link_mdiodev(bus, &phydev->mdio); + /* Search for a swnode for the phy in the swnode hierarchy of the bus. + * If there is no swnode for the phy provided, just ignore it. + */ + if (dev_fwnode(&bus->dev) && !dev_fwnode(&phydev->mdio.dev)) { + snprintf(node_name, sizeof(node_name), "ethernet-phy@%d", + addr); + fwnode = fwnode_get_named_child_node(dev_fwnode(&bus->dev), + node_name); + if (fwnode) + device_set_node(&phydev->mdio.dev, fwnode); + } + err = phy_device_register(phydev); if (err) { phy_device_free(phydev);