From patchwork Tue Oct 15 16:06:36 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Vasut X-Patchwork-Id: 3046541 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id A8B879F2B6 for ; Tue, 15 Oct 2013 16:10:05 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 038AB201CD for ; Tue, 15 Oct 2013 16:10:01 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3C17520347 for ; Tue, 15 Oct 2013 16:09:56 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VW7Ag-0003Gq-Qp; Tue, 15 Oct 2013 16:08:35 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VW7AK-0005J1-09; Tue, 15 Oct 2013 16:08:12 +0000 Received: from mail-out.m-online.net ([212.18.0.10]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VW79Z-0005Ce-OS for linux-arm-kernel@lists.infradead.org; Tue, 15 Oct 2013 16:07:32 +0000 Received: from frontend1.mail.m-online.net (frontend1.mail.intern.m-online.net [192.168.8.180]) by mail-out.m-online.net (Postfix) with ESMTP id 3czhNP0ZtSz3hhxw; Tue, 15 Oct 2013 18:07:00 +0200 (CEST) X-Auth-Info: yU4nKRj8ZRGUSVxYHOF+r06MQsRfjH4EVoenJWqeAWU= Received: from chi.lan (host-82-135-33-74.customer.m-online.net [82.135.33.74]) by smtp-auth.mnet-online.de (Postfix) with ESMTPA id 3czhNM5djNzbbl1; Tue, 15 Oct 2013 18:06:59 +0200 (CEST) From: Marek Vasut To: linux-pci@vger.kernel.org Subject: [PATCH 2/6] PCI: imx6: Fix the clock for PCIe Date: Tue, 15 Oct 2013 18:06:36 +0200 Message-Id: <1381853200-5534-3-git-send-email-marex@denx.de> X-Mailer: git-send-email 1.8.4.rc3 In-Reply-To: <1381853200-5534-1-git-send-email-marex@denx.de> References: <1381853200-5534-1-git-send-email-marex@denx.de> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131015_120726_075065_AECD1ED0 X-CRM114-Status: GOOD ( 10.97 ) X-Spam-Score: 1.1 (+) Cc: Marek Vasut , Pratyush Anand , Richard Zhu , Siva Reddy Kallam , Mohit KUMAR , Sascha Hauer , Jingoo Han , Troy Kisky , Frank Li , Srikanth T Shivanand , Bjorn Helgaas , Sean Cross , Shawn Guo , Yinghai Lu , Tim Harvey , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-1.7 required=5.0 tests=BAYES_00,KHOP_BIG_TO_CC, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=no version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The PCIe needs lvds_gate for successful operation, so make the PCIe driver enable (set as output) the lvds_gate . Signed-off-by: Marek Vasut Cc: Bjorn Helgaas Cc: Frank Li Cc: Jingoo Han Cc: Mohit KUMAR Cc: Pratyush Anand Cc: Richard Zhu Cc: Sascha Hauer Cc: Sean Cross Cc: Shawn Guo Cc: Siva Reddy Kallam Cc: Srikanth T Shivanand Cc: Tim Harvey Cc: Troy Kisky Cc: Yinghai Lu --- drivers/pci/host/pci-imx6.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/host/pci-imx6.c index 728989a..94e4d0f 100644 --- a/drivers/pci/host/pci-imx6.c +++ b/drivers/pci/host/pci-imx6.c @@ -35,6 +35,7 @@ struct imx6_pcie { int power_on_gpio; int wake_up_gpio; int disable_gpio; + struct clk *lvds_sel; struct clk *lvds_gate; struct clk *sata_ref_100m; struct clk *pcie_ref_125m; @@ -255,6 +256,12 @@ static int imx6_pcie_deassert_core_reset(struct pcie_port *pp) goto err_pcie_ref; } + ret = clk_prepare_enable(imx6_pcie->lvds_sel); + if (ret) { + dev_err(pp->dev, "unable to enable lvds_sel\n"); + goto err_lvds_sel; + } + ret = clk_prepare_enable(imx6_pcie->lvds_gate); if (ret) { dev_err(pp->dev, "unable to enable lvds_gate\n"); @@ -273,8 +280,10 @@ static int imx6_pcie_deassert_core_reset(struct pcie_port *pp) return 0; err_pcie_axi: - clk_disable_unprepare(imx6_pcie->lvds_gate); + clk_disable_unprepare(imx6_pcie->lvds_sel); err_lvds_gate: + clk_disable_unprepare(imx6_pcie->lvds_gate); +err_lvds_sel: clk_disable_unprepare(imx6_pcie->pcie_ref_125m); err_pcie_ref: clk_disable_unprepare(imx6_pcie->sata_ref_100m); @@ -497,6 +506,14 @@ static int __init imx6_pcie_probe(struct platform_device *pdev) } /* Fetch clocks */ + imx6_pcie->lvds_sel = devm_clk_get(&pdev->dev, "lvds_sel"); + if (IS_ERR(imx6_pcie->lvds_sel)) { + dev_err(&pdev->dev, + "lvds_sel clock select missing or invalid\n"); + ret = PTR_ERR(imx6_pcie->lvds_sel); + goto err; + } + imx6_pcie->lvds_gate = devm_clk_get(&pdev->dev, "lvds_gate"); if (IS_ERR(imx6_pcie->lvds_gate)) { dev_err(&pdev->dev,