From patchwork Thu Jun 13 18:30:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 13697278 X-Patchwork-Delegate: kuba@kernel.org Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (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 5619E14C599 for ; Thu, 13 Jun 2024 18:31:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718303462; cv=none; b=MXMWd9zmEvcmIzOe3bdMHn6r6jC0vI1EFabA1ZZFCDzHONnyidaNQabHHGD7HR2fp8EzjoFIcOcQDCRLBvJbBRuxblL2k/O1mAy/iJR0cJsQBV6nntCT4rTvOEnXJDqDvAq992w6+1gSJCLGe8sRyBqgUhlYTkZulfoZIeb7uNk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718303462; c=relaxed/simple; bh=L+BkJHJ93ZoZnAv3yF+VnHGw4NT9HnFM5BeOcKm1xfQ=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=eT/Au4grx+JAv1DcqHYngSM9nECd/BlkzE9bVD8lrbPdDhnRQoEhWqiSWYKpUJYP0ZA3NnlExOhtCCZ+KQhbL+Az3eorTN+RmRYcMxxosB+zVXlMBypDIw6UDTQGAAOJRxuOF6Y7ENatouuEdph8dIzyhzGrwGhGKQm+7e0TAHk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sHpDZ-0003UU-7p; Thu, 13 Jun 2024 20:30:37 +0200 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sHpDX-0025Xj-TO; Thu, 13 Jun 2024 20:30:35 +0200 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1sHpDX-00A6Nn-2i; Thu, 13 Jun 2024 20:30:35 +0200 From: Oleksij Rempel To: Andrew Lunn , Heiner Kallweit , Russell King , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Oleksij Rempel , stable@vger.kernel.org, kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH net v1 1/2] net: phy: dp83tg720: wake up PHYs in managed mode Date: Thu, 13 Jun 2024 20:30:33 +0200 Message-Id: <20240613183034.2407798-1-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.2 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org In case this PHY is bootstrapped for managed mode, we need to manually wake it. Otherwise no link will be detected. Cc: stable@vger.kernel.org Fixes: cb80ee2f9bee1 ("net: phy: Add support for the DP83TG720S Ethernet PHY") Signed-off-by: Oleksij Rempel --- drivers/net/phy/dp83tg720.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/drivers/net/phy/dp83tg720.c b/drivers/net/phy/dp83tg720.c index 326c9770a6dcc..1186dfc70fb3c 100644 --- a/drivers/net/phy/dp83tg720.c +++ b/drivers/net/phy/dp83tg720.c @@ -17,6 +17,11 @@ #define DP83TG720S_PHY_RESET 0x1f #define DP83TG720S_HW_RESET BIT(15) +#define DP83TG720S_LPS_CFG3 0x18c +/* Power modes are documented as bit fields but used as values */ +/* Power Mode 0 is Normal mode */ +#define DP83TG720S_LPS_CFG3_PWR_MODE_0 BIT(0) + #define DP83TG720S_RGMII_DELAY_CTRL 0x602 /* In RGMII mode, Enable or disable the internal delay for RXD */ #define DP83TG720S_RGMII_RX_CLK_SEL BIT(1) @@ -154,10 +159,17 @@ static int dp83tg720_config_init(struct phy_device *phydev) */ usleep_range(1000, 2000); - if (phy_interface_is_rgmii(phydev)) - return dp83tg720_config_rgmii_delay(phydev); + if (phy_interface_is_rgmii(phydev)) { + ret = dp83tg720_config_rgmii_delay(phydev); + if (ret) + return ret; + } - return 0; + /* In case the PHY is bootstrapped in managed mode, we need to + * wake it. + */ + return phy_write_mmd(phydev, MDIO_MMD_VEND2, DP83TG720S_LPS_CFG3, + DP83TG720S_LPS_CFG3_PWR_MODE_0); } static struct phy_driver dp83tg720_driver[] = {