From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 BAE8C51C060; Wed, 30 Sep 2026 18:25:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790792727; cv=none; b=OD9XJGjDWkLOx3ZfOIY0X72AQkTNs4t4lHkRfFLwxhrKdVKtAo1d97E9LVyIfiXjWGnr1NQrQzmxwJYBGEOXeMixtvELluIWNM4rsXojfK6g8WVuo5oGfeWrER9pyUKNtO1tYuTtZMFkjeye+f9XvIymZ0Xa96YQFbWXGsm95zY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790792727; c=relaxed/simple; bh=+LgiVbH9PrnsD9eel1eg1P2Le94/KkNqRKKy6PzZmzg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=qTwRqJJB124xS1DdNd/YWXN8DZMVErsISIKxhfIMV+wWVzdlT36RK5aS3Hr0PpS02ZqhlBF3o3YdekyaOrAOKk9GdD+Y34BzzbWkmKqWG7wLKNbsHhGVLG86bHCEsP++K1FQwFDJoixKiSF8jrLsZbg+KyEIueWAxedYlPLjScg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=DPMpejKm; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="DPMpejKm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 241FB1F000FF; Wed, 30 Sep 2026 18:25:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790792726; bh=AJi7yUnS4PSdn8ZVEJ8dZRm+7C6GvTzvmdlpSdJWx54=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=DPMpejKmEyzMzlXzT0NVX5Sn9FKoArG5vQNC3DA7gLU5bbK5MMQUcIvh2RzKIRdxF ODDfThunUS9t7EQ8atG7xFwZHH2glzPIZr77dMXVrLQbcPvy91dy7wOUU+6NH70qut 7a5kiuNn0D27ceuO7VGmv5suc0AiIezWgcYe5IdM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Simon Horman , Rengarajan S , Jakub Kicinski , =?UTF-8?q?Minh=20Ti=E1=BA=BFn=20Nguy=E1=BB=85n?= Subject: [PATCH 5.15 750/752] lan78xx: Enable 125 MHz CLK configuration for LAN7801 if NO EEPROM is detected Date: Wed, 30 Sep 2026 17:30:20 +0200 Message-ID: <20260930152414.445137548@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260930152358.131179731@linuxfoundation.org> References: <20260930152358.131179731@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Rengarajan S commit 5160b129f65fc6e1a4aa282d44f824e12aa800ee upstream. The 125MHz and 25MHz clock configurations are enabled in the initialization regardless of EEPROM (125MHz is needed for RGMII 1000Mbps operation). After a lite reset (lan78xx_reset), these contents go back to defaults(all 0, so no 125MHz or 25MHz clock). Reviewed-by: Simon Horman Signed-off-by: Rengarajan S Link: https://lore.kernel.org/r/20240529140256.1849764-2-rengarajan.s@microchip.com Signed-off-by: Jakub Kicinski Cc: Minh Tiến Nguyễn Signed-off-by: Greg Kroah-Hartman --- drivers/net/usb/lan78xx.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -2804,6 +2804,8 @@ static int lan78xx_reset(struct lan78xx_ return ret; buf |= HW_CFG_MEF_; + buf |= HW_CFG_CLK125_EN_; + buf |= HW_CFG_REFCLK25_EN_; ret = lan78xx_write_reg(dev, HW_CFG, buf); if (ret < 0)