From patchwork Fri Nov 15 02:30:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dilip Kota X-Patchwork-Id: 11244719 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1C2E5930 for ; Fri, 15 Nov 2019 02:31:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 06C462072C for ; Fri, 15 Nov 2019 02:31:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727226AbfKOCbK (ORCPT ); Thu, 14 Nov 2019 21:31:10 -0500 Received: from mga18.intel.com ([134.134.136.126]:34174 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727183AbfKOCbJ (ORCPT ); Thu, 14 Nov 2019 21:31:09 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Nov 2019 18:31:09 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,306,1569308400"; d="scan'208";a="207991946" Received: from sgsxdev004.isng.intel.com (HELO localhost) ([10.226.88.13]) by orsmga003.jf.intel.com with ESMTP; 14 Nov 2019 18:31:05 -0800 From: Dilip Kota To: gustavo.pimentel@synopsys.com, lorenzo.pieralisi@arm.com, andrew.murray@arm.com, helgaas@kernel.org, jingoohan1@gmail.com, robh@kernel.org, martin.blumenstingl@googlemail.com, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, andriy.shevchenko@intel.com Cc: linux-kernel@vger.kernel.org, cheol.yong.kim@intel.com, chuanhua.lei@linux.intel.com, qi-ming.wu@intel.com, Dilip Kota Subject: [PATCH v7 3/3] PCI: artpec6: Configure FTS with dwc helper function Date: Fri, 15 Nov 2019 10:30:44 +0800 Message-Id: <681724c95e9a15083337d67a45350c1bf5e4ad8d.1573784557.git.eswara.kota@linux.intel.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: References: In-Reply-To: References: Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Use DesignWare helper functions to configure Fast Training Sequence. Drop the respective code in the driver. Signed-off-by: Dilip Kota Reviewed-by: Andrew Murray --- Changes on v7: No change Changes on v6: Typo fix:s/DesugnWare/DesignWare Update 'Utilize DesignWare' --> 'Use DesignWare' Add Reviewed-by: Andrew Murray drivers/pci/controller/dwc/pcie-artpec6.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-artpec6.c b/drivers/pci/controller/dwc/pcie-artpec6.c index d00252bd8fae..02d93b8c7942 100644 --- a/drivers/pci/controller/dwc/pcie-artpec6.c +++ b/drivers/pci/controller/dwc/pcie-artpec6.c @@ -51,9 +51,6 @@ static const struct of_device_id artpec6_pcie_of_match[]; #define ACK_N_FTS_MASK GENMASK(15, 8) #define ACK_N_FTS(x) (((x) << 8) & ACK_N_FTS_MASK) -#define FAST_TRAINING_SEQ_MASK GENMASK(7, 0) -#define FAST_TRAINING_SEQ(x) (((x) << 0) & FAST_TRAINING_SEQ_MASK) - /* ARTPEC-6 specific registers */ #define PCIECFG 0x18 #define PCIECFG_DBG_OEN BIT(24) @@ -313,10 +310,7 @@ static void artpec6_pcie_set_nfts(struct artpec6_pcie *artpec6_pcie) * Set the Number of Fast Training Sequences that the core * advertises as its N_FTS during Gen2 or Gen3 link training. */ - val = dw_pcie_readl_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL); - val &= ~FAST_TRAINING_SEQ_MASK; - val |= FAST_TRAINING_SEQ(180); - dw_pcie_writel_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL, val); + dw_pcie_link_set_n_fts(pci, 180); } static void artpec6_pcie_assert_core_reset(struct artpec6_pcie *artpec6_pcie)