From patchwork Mon Mar 25 08:34:50 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kishon Vijay Abraham I X-Patchwork-Id: 161038 Delivered-To: patch@linaro.org Received: by 2002:a02:c6d8:0:0:0:0:0 with SMTP id r24csp3696630jan; Mon, 25 Mar 2019 01:37:20 -0700 (PDT) X-Google-Smtp-Source: APXvYqwutZrCpIpWml5gl9uRBkH4wPBOVgYamoRfIjM/nxVvAPH+P03ba+VLvYBeuFbwVtEphIPP X-Received: by 2002:a63:d706:: with SMTP id d6mr21218195pgg.367.1553503040034; Mon, 25 Mar 2019 01:37:20 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1553503040; cv=none; d=google.com; s=arc-20160816; b=hsifqDDiH0GDxSkubVLbcbGWc8V9Gv8TTHL7VJBjZ7n8jCsh0ERljC6dsEhnEUt8zw f7pZ44I6lCgP2jg2z/NMqQ243hXUJRh5z98JlACzoCb1ipulYc+q7VjBsYbKDVYZGKGI Dc+/lJbw2oiqi7uVZf3pvScmFWPW2fIGaYIVJgfciHpkA49IK02zZC74JPCms+eXg1kS tMIHpRl9epQF6MdDpy5RrAn72128jic8OUK2bP6HfVoiSkgPySJMSeMSxhjELz0pgzAT lniG0wAM3Nu/9eZW7EMpBUdPkBWKVH7aFQHjEIsHI6ULHv3ktCL6pYTbVtrS70n+teuu hmrw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:dkim-signature; bh=9+2eOM3oSY0oLj93leiipPk6vycQ1SmzvQwVGhiyl5g=; b=SR+1afbDrAP0lKHarRK41bDZDNpXX6dsggpo2OCNRR1G0pUMJ72JTfZ8sBGOoAst/Z bxPqLaEW0bN5/jlmsLquF968DmcCM9yEWq9rbf+pt2GJSxH7m6+kfioHYND+SU+RJgmm bCQ3wNcRfkwA1JUxp+2AO+7SQQVP4TG6K8cgWzAeAk7AR0ilqPu2Y03YyVjSFdJazpF2 ZCoofnAaJVnvVBqlsKnQtdZOQy7eqepHjdVpv9dUt/TSFztMee2OpXOnmTytoudpF31E MRRTljm+FPVDLgn4VrUiHINAZqF7uVEey0aBCat0ScTm+uWKYpEdSel0H0p5m3tvQ/+O wqpA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=IoaIWNfL; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id u5si13080602pgi.162.2019.03.25.01.37.19; Mon, 25 Mar 2019 01:37:20 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=IoaIWNfL; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730306AbfCYIhS (ORCPT + 31 others); Mon, 25 Mar 2019 04:37:18 -0400 Received: from lelv0143.ext.ti.com ([198.47.23.248]:33980 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730289AbfCYIhP (ORCPT ); Mon, 25 Mar 2019 04:37:15 -0400 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id x2P8b3qD030975; Mon, 25 Mar 2019 03:37:03 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1553503023; bh=9+2eOM3oSY0oLj93leiipPk6vycQ1SmzvQwVGhiyl5g=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=IoaIWNfLZqrC1CFmioiRHCzpk/z8u0zdxswV61Nh96AOAACivPQIpx8xiA7X6nTDF qRQct3PEzSXvTQEeG0iYrSfFZ8Nn0YEBY7rAVh1Z04udUbS5Hrtt/L1OSOPy5IsTBR 20pVXY5dnOVnkdkNNAWHj8bxAvRUdQttJU3cic+E= Received: from DFLE109.ent.ti.com (dfle109.ent.ti.com [10.64.6.30]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x2P8b2I7053481 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 25 Mar 2019 03:37:03 -0500 Received: from DFLE111.ent.ti.com (10.64.6.32) by DFLE109.ent.ti.com (10.64.6.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Mon, 25 Mar 2019 03:37:02 -0500 Received: from dlep33.itg.ti.com (157.170.170.75) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1713.5 via Frontend Transport; Mon, 25 Mar 2019 03:37:02 -0500 Received: from a0393678ub.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id x2P8ZsFv006534; Mon, 25 Mar 2019 03:36:58 -0500 From: Kishon Vijay Abraham I To: Gustavo Pimentel , Bjorn Helgaas , Rob Herring , Lorenzo Pieralisi , Arnd Bergmann , Murali Karicheri CC: Kishon Vijay Abraham I , Jingoo Han , Greg Kroah-Hartman , , , , , , Subject: [PATCH v2 15/26] PCI: keystone: Invoke phy_reset API before enabling PHY Date: Mon, 25 Mar 2019 14:04:50 +0530 Message-ID: <20190325083501.8088-16-kishon@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190325083501.8088-1-kishon@ti.com> References: <20190325083501.8088-1-kishon@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org SERDES connected to the PCIe controller in AM654 requires power on reset enable (POR_EN) to be set in the SERDES. The SERDES driver sets POR_EN in the reset ops and it has to be invoked before init or enable ops. In order for SERDES driver to set POR_EN, invoke phy_reset API in pci-keystone driver. Signed-off-by: Kishon Vijay Abraham I --- drivers/pci/controller/dwc/pci-keystone.c | 4 ++++ 1 file changed, 4 insertions(+) -- 2.17.1 diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c index a6a482bd648f..e4a816f53b8e 100644 --- a/drivers/pci/controller/dwc/pci-keystone.c +++ b/drivers/pci/controller/dwc/pci-keystone.c @@ -897,6 +897,10 @@ static int ks_pcie_enable_phy(struct keystone_pcie *ks_pcie) int num_lanes = ks_pcie->num_lanes; for (i = 0; i < num_lanes; i++) { + ret = phy_reset(ks_pcie->phy[i]); + if (ret < 0) + goto err_phy; + ret = phy_init(ks_pcie->phy[i]); if (ret < 0) goto err_phy;