From mboxrd@z Thu Jan 1 00:00:00 1970 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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no 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 6111FC3F68F for ; Wed, 22 Jan 2020 13:31:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 38F5120678 for ; Wed, 22 Jan 2020 13:31:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727141AbgAVNUr (ORCPT ); Wed, 22 Jan 2020 08:20:47 -0500 Received: from inva020.nxp.com ([92.121.34.13]:41664 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730037AbgAVNUq (ORCPT ); Wed, 22 Jan 2020 08:20:46 -0500 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 7F4091A3D33; Wed, 22 Jan 2020 14:20:44 +0100 (CET) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 735911A294D; Wed, 22 Jan 2020 14:20:44 +0100 (CET) Received: from fsr-fed2164-101.ea.freescale.net (fsr-fed2164-101.ea.freescale.net [10.171.82.91]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id 2DD5420364; Wed, 22 Jan 2020 14:20:44 +0100 (CET) From: Madalin Bucur To: davem@davemloft.net, netdev@vger.kernel.org Cc: robh+dt@kernel.org, mark.rutland@arm.com, devicetree@vger.kernel.org, Madalin Bucur Subject: [PATCH net 0/3] net: fsl/fman: address erratum A011043 Date: Wed, 22 Jan 2020 15:20:26 +0200 Message-Id: <1579699229-5948-1-git-send-email-madalin.bucur@oss.nxp.com> X-Mailer: git-send-email 2.1.0 Content-Type: text/plain; charset="us-ascii" Reply-to: madalin.bucur@oss.nxp.com X-Virus-Scanned: ClamAV using ClamSMTP Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This addresses a HW erratum on some QorIQ DPAA devices. MDIO reads to internal PCS registers may result in having the MDIO_CFG[MDIO_RD_ER] bit set, even when there is no error and read data (MDIO_DATA[MDIO_DATA]) is correct. Software may get false read error when reading internal PCS registers through MDIO. As a workaround, all internal MDIO accesses should ignore the MDIO_CFG[MDIO_RD_ER] bit. When the issue was present, one could see such errors during boot: mdio_bus ffe4e5000: Error while reading PHY0 reg at 3.3 Madalin Bucur (3): dt-bindings: net: add fsl,erratum-a011043 powerpc/fsl/dts: add fsl,erratum-a011043 net/fsl: treat fsl,erratum-a011043 Documentation/devicetree/bindings/net/fsl-fman.txt | 13 +++++++++++++ .../boot/dts/fsl/qoriq-fman3-0-10g-0-best-effort.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-0-10g-0.dtsi | 1 + .../boot/dts/fsl/qoriq-fman3-0-10g-1-best-effort.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-0-10g-1.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-0-1g-0.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-0-1g-1.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-0-1g-2.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-0-1g-3.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-0-1g-4.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-0-1g-5.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-1-10g-0.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-1-10g-1.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-1-1g-0.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-1-1g-1.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-1-1g-2.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-1-1g-3.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-1-1g-4.dtsi | 1 + arch/powerpc/boot/dts/fsl/qoriq-fman3-1-1g-5.dtsi | 1 + drivers/net/ethernet/freescale/xgmac_mdio.c | 7 ++++++- 20 files changed, 37 insertions(+), 1 deletion(-) -- 2.1.0