From nobody Tue Dec 16 02:17:14 2025 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) (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 389B928A3EF; Wed, 29 Oct 2025 07:28:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.154.123 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761722910; cv=none; b=MEbJKQfzbTzcGxRrTW2ko06I3+Y7Z0nvTmyJYQ08Dc87YK5do9bvNaz1+u7Fkrt2ZwifPdwgSjY2iP6rYkHLJhigHoFDNkr2TNtb51PO8U55AyD5h5rc0gXyvq+DxRZRhtPcZusQkrvUdr3Lv9ogjRANLfVossoZZUmrOpwPwcI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761722910; c=relaxed/simple; bh=yxETgaEVL24wQO0PvJWn2aHDzqmEPcI1ly/KfqUGQ9U=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=DT41//OGl4jWfkR1LaF0PYwDrQLxS9VceKY03mjtFU324c3Zmb2Gt9NqmHNAkc/qMM01Qs5PMRD5SVfOrhFjEcqwE9ZG2GscyIB6NMzcVrs7f/eRFj12H/zNrlGYOOIe0sgR8Nn2DRcNLY3Vuhivs8HK1fkUujM3txAAz/cAKMs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=Z5FUXwDN; arc=none smtp.client-ip=68.232.154.123 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="Z5FUXwDN" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1761722909; x=1793258909; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=yxETgaEVL24wQO0PvJWn2aHDzqmEPcI1ly/KfqUGQ9U=; b=Z5FUXwDNlySNWuijFMzkgIwCSYleQ+taEonuWDsCPRDqDMsRZxPQl15N ++BCLm+nOjKYQ2x9NQc/Su9/HCr/mUoEjEzvLM0b0ScRiH1R8FawUBIiD NRySVhCIATAjFsE7r7VcYpAeoSoOdnW/t1sg25cxboNPzf9Z00Xd8qnkI 6LNbAoHYajMrIMmS1F7NIYmKLldYcQdizzJGI1Go3yHkomwuHU++GR/eY v4BhNtSEezFbASjA1KT20Ox1sadYf+8XqfGVAeqalS7eyMvul0B0XHnQP ODFhVQ1QPlcvjWLIbcK3LmosmdGI0s+121GYm9nEpAy3rA++00Zc9ikI8 w==; X-CSE-ConnectionGUID: lh0mYcbFSl+9cvidjQy/DA== X-CSE-MsgGUID: 755eDHn8Q2Wup5k4y3w1aQ== X-IronPort-AV: E=Sophos;i="6.19,263,1754982000"; d="scan'208";a="215747488" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa6.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 29 Oct 2025 00:28:24 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.58; Wed, 29 Oct 2025 00:28:17 -0700 Received: from DEN-DL-M31836.microchip.com (10.10.85.11) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Wed, 29 Oct 2025 00:28:15 -0700 From: Horatiu Vultur To: , , , , , , CC: , , Horatiu Vultur Subject: [PATCH net v2 2/2] net: phy: micrel: lan8842 errata Date: Wed, 29 Oct 2025 08:24:56 +0100 Message-ID: <20251029072456.392969-3-horatiu.vultur@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251029072456.392969-1-horatiu.vultur@microchip.com> References: <20251029072456.392969-1-horatiu.vultur@microchip.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add errata for lan8842. The errata document can be found here [1]. This is fixing the module 7 ("1000BASE-T PMA EEE TX wake PHY-side shorted center taps") [1] https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ProductD= ocuments/Errata/LAN8842-Errata-DS80001172.pdf Fixes: 5a774b64cd6a ("net: phy: micrel: Add support for lan8842") Signed-off-by: Horatiu Vultur Reviewed-by: Andrew Lunn --- drivers/net/phy/micrel.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c index 4b526587093c6..d063e77f07f81 100644 --- a/drivers/net/phy/micrel.c +++ b/drivers/net/phy/micrel.c @@ -2835,6 +2835,13 @@ static int ksz886x_cable_test_get_status(struct phy_= device *phydev, */ #define LAN8814_PAGE_PCS_DIGITAL 2 =20 +/** + * LAN8814_PAGE_EEE - Selects Extended Page 3. + * + * This page contains EEE registers + */ +#define LAN8814_PAGE_EEE 3 + /** * LAN8814_PAGE_COMMON_REGS - Selects Extended Page 4. * @@ -5952,6 +5959,9 @@ static int lan8842_probe(struct phy_device *phydev) =20 #define LAN8814_POWER_MGMT_VAL5 LAN8814_POWER_MGMT_B_C_D =20 +#define LAN8814_EEE_WAKE_TX_TIMER 0x0e +#define LAN8814_EEE_WAKE_TX_TIMER_MAX_VAL 0x1f + static int lan8842_erratas(struct phy_device *phydev) { int ret; @@ -6023,9 +6033,16 @@ static int lan8842_erratas(struct phy_device *phydev) if (ret < 0) return ret; =20 - return lanphy_write_page_reg(phydev, LAN8814_PAGE_POWER_REGS, - LAN8814_POWER_MGMT_MODE_14_100BTX_EEE_TX_RX, - LAN8814_POWER_MGMT_VAL4); + ret =3D lanphy_write_page_reg(phydev, LAN8814_PAGE_POWER_REGS, + LAN8814_POWER_MGMT_MODE_14_100BTX_EEE_TX_RX, + LAN8814_POWER_MGMT_VAL4); + if (ret < 0) + return ret; + + /* Refresh time Waketx timer */ + return lanphy_write_page_reg(phydev, LAN8814_PAGE_EEE, + LAN8814_EEE_WAKE_TX_TIMER, + LAN8814_EEE_WAKE_TX_TIMER_MAX_VAL); } =20 static int lan8842_config_init(struct phy_device *phydev) --=20 2.34.1