From patchwork Fri May 8 12:35:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 226165 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 E861EC38A2A for ; Fri, 8 May 2020 13:02:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BF62F20870 for ; Fri, 8 May 2020 13:02:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588942930; bh=MVj9UZhM0DjTLdw9ouaGd2g02wNy/NokxdpMwsfgbjY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=h99DnM7L7qRdjh9c4MDwGE/jx67Tf2h9PM5DFke5HJ4+5TR+xLVE9Tq1y4NA1JXSm 0emg/3r9Ia+Fxj5a1311eQDy/Ns63m2OOc+BQon/RbA2ZtgzpUnNcPAQG3iLhXGWBP KU6P6fq/j905pzQuy2K97N8xJi8PfWs9yX27d3b8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728501AbgEHNCJ (ORCPT ); Fri, 8 May 2020 09:02:09 -0400 Received: from mail.kernel.org ([198.145.29.99]:60098 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729418AbgEHMvN (ORCPT ); Fri, 8 May 2020 08:51:13 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E344E24969; Fri, 8 May 2020 12:51:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588942272; bh=MVj9UZhM0DjTLdw9ouaGd2g02wNy/NokxdpMwsfgbjY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xEfC66F+62BTOi1LSOOxxDas6r25RxISPnW7KYTnitkqFxCzR2Fq1avSHcvESxVng SW9NRvnq2znAIGpntsdGZOdtNrpq058XR/b7NHC24JnvOLU7adcAEYXtLhBc9f2XAf 5PaWRjMkNqkvauB42fT1Iw9wYAeoSLSt6lTSoSEc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Julien Beraud , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 12/32] net: stmmac: fix enabling socfpgas ptp_ref_clock Date: Fri, 8 May 2020 14:35:25 +0200 Message-Id: <20200508123036.422506887@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200508123034.886699170@linuxfoundation.org> References: <20200508123034.886699170@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Julien Beraud [ Upstream commit 15ce30609d1e88d42fb1cd948f453e6d5f188249 ] There are 2 registers to write to enable a ptp ref clock coming from the fpga. One that enables the usage of the clock from the fpga for emac0 and emac1 as a ptp ref clock, and the other to allow signals from the fpga to reach emac0 and emac1. Currently, if the dwmac-socfpga has phymode set to PHY_INTERFACE_MODE_MII, PHY_INTERFACE_MODE_GMII, or PHY_INTERFACE_MODE_SGMII, both registers will be written and the ptp ref clock will be set as coming from the fpga. Separate the 2 register writes to only enable signals from the fpga to reach emac0 or emac1 when ptp ref clock is not coming from the fpga. Signed-off-by: Julien Beraud Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c index 5b3b06a0a3bf5..33407df6bea69 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c @@ -274,16 +274,19 @@ static int socfpga_dwmac_set_phy_mode(struct socfpga_dwmac *dwmac) phymode == PHY_INTERFACE_MODE_MII || phymode == PHY_INTERFACE_MODE_GMII || phymode == PHY_INTERFACE_MODE_SGMII) { - ctrl |= SYSMGR_EMACGRP_CTRL_PTP_REF_CLK_MASK << (reg_shift / 2); regmap_read(sys_mgr_base_addr, SYSMGR_FPGAGRP_MODULE_REG, &module); module |= (SYSMGR_FPGAGRP_MODULE_EMAC << (reg_shift / 2)); regmap_write(sys_mgr_base_addr, SYSMGR_FPGAGRP_MODULE_REG, module); - } else { - ctrl &= ~(SYSMGR_EMACGRP_CTRL_PTP_REF_CLK_MASK << (reg_shift / 2)); } + if (dwmac->f2h_ptp_ref_clk) + ctrl |= SYSMGR_EMACGRP_CTRL_PTP_REF_CLK_MASK << (reg_shift / 2); + else + ctrl &= ~(SYSMGR_EMACGRP_CTRL_PTP_REF_CLK_MASK << + (reg_shift / 2)); + regmap_write(sys_mgr_base_addr, reg_offset, ctrl); /* Deassert reset for the phy configuration to be sampled by