From patchwork Thu Apr 30 22:06:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Marangi X-Patchwork-Id: 11521743 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com 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 B6BE615AB for ; Thu, 30 Apr 2020 22:06:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9DD592074A for ; Thu, 30 Apr 2020 22:06:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="W9lUgU66" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727880AbgD3WGn (ORCPT ); Thu, 30 Apr 2020 18:06:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48226 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727879AbgD3WGm (ORCPT ); Thu, 30 Apr 2020 18:06:42 -0400 Received: from mail-ed1-x542.google.com (mail-ed1-x542.google.com [IPv6:2a00:1450:4864:20::542]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 154B5C035494; Thu, 30 Apr 2020 15:06:42 -0700 (PDT) Received: by mail-ed1-x542.google.com with SMTP id d16so5842970edv.8; Thu, 30 Apr 2020 15:06:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=CgTrzh3Tu5k7J4C6anuKQZFd/nJ6FehtS7rnu7w0aik=; b=W9lUgU66nDUDMQXEq+6WhaUSOwFR89PMCUiEzi9uQtlmrbT3JUKTTX8N/YvWpmGRZM bflOf5xiTdbtWJrHBNFVSeEm+ltIVGx/x7kqByJXaZjP5RSgebWF8zkpfKGiVBBrqo+T ulnFiY7CxTNRRJVS1U+SxBPB6cN2KjoeJv4TFmlMl0RcQgP8zt1Mw+q4KYnW8qbjribj cebgHLKEyWmZnHu7OovETEUUJJb+W+jfYrjGT4pL1C/FniBrTOWpRtNF9NWvapGi2zVC 3gRUTaf7+pzMeMkHewo63L90kIIiHdlTHSIb3lrak94otqyrmZYWcNxMj1JToDaELXRv HOuQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=CgTrzh3Tu5k7J4C6anuKQZFd/nJ6FehtS7rnu7w0aik=; b=i6bZXrlmltDhgXTV5Vy/4J2iIoHJmytlZ14dOSVsgTsX883D/VbJZFkSJT51CcdUZO 72m7WiZQbKLzCjP6fi+zXSQG/y7h6e3Y8Y5+1zcI1bVY9LUES/IZrZa+3Y2YgN/IGGvX JH+oS3q5/0qVsvtXZqkerEefTIRaX0f409OJclmX0+fuJ7QVfpYOEiJg9vOhr9xildMY efa+rcg7kdEbdkU4tlA7zOKc2rjH/Z4nLWR3QED9y7CkH2u0PU/2Ow1zBwShKRO+9seG EE8KZwghfvCLIZaStCUH+sOw6cFi+ozZevuqX2vHwWQtQIfdla/zJEl2DwX2+UR23Jc1 +s5w== X-Gm-Message-State: AGi0PuaJ+/vu2EPYNKIjW652gg63xmA+SuZGyW0UDZ3LCWfwf2ok16u8 qAwsJ+s2JZ6RK6KCrnGvg2Q= X-Google-Smtp-Source: APiQypKAWtOnJY37BTq1roF1i90+nc9Z/fJC/RtNKvUzlpXZZWc8QxpkmmWxFQpUlmKLLpjH1nhY7g== X-Received: by 2002:a05:6402:95e:: with SMTP id h30mr1049680edz.117.1588284400719; Thu, 30 Apr 2020 15:06:40 -0700 (PDT) Received: from Ansuel-XPS.localdomain ([79.37.253.240]) by smtp.googlemail.com with ESMTPSA id t17sm54185edq.88.2020.04.30.15.06.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Apr 2020 15:06:40 -0700 (PDT) From: Ansuel Smith To: Bjorn Andersson Cc: Abhishek Sahu , Ansuel Smith , Andy Gross , Bjorn Helgaas , Rob Herring , Mark Rutland , Stanimir Varbanov , Lorenzo Pieralisi , Andrew Murray , Philipp Zabel , linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 03/11] PCI: qcom: change duplicate PCI reset to phy reset Date: Fri, 1 May 2020 00:06:10 +0200 Message-Id: <20200430220619.3169-4-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200430220619.3169-1-ansuelsmth@gmail.com> References: <20200430220619.3169-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Abhishek Sahu The deinit issues reset_control_assert for PCI twice and does not contain phy reset. Signed-off-by: Abhishek Sahu Signed-off-by: Ansuel Smith Reviewed-by: Rob Herring --- drivers/pci/controller/dwc/pcie-qcom.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 2a39dfdccfc8..7a8901efc031 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -280,14 +280,14 @@ static void qcom_pcie_deinit_2_1_0(struct qcom_pcie *pcie) { struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0; + clk_disable_unprepare(res->phy_clk); reset_control_assert(res->pci_reset); reset_control_assert(res->axi_reset); reset_control_assert(res->ahb_reset); reset_control_assert(res->por_reset); - reset_control_assert(res->pci_reset); + reset_control_assert(res->phy_reset); clk_disable_unprepare(res->iface_clk); clk_disable_unprepare(res->core_clk); - clk_disable_unprepare(res->phy_clk); clk_disable_unprepare(res->aux_clk); clk_disable_unprepare(res->ref_clk); regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); @@ -325,12 +325,6 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie) goto err_clk_core; } - ret = clk_prepare_enable(res->phy_clk); - if (ret) { - dev_err(dev, "cannot prepare/enable phy clock\n"); - goto err_clk_phy; - } - if (res->aux_clk) { ret = clk_prepare_enable(res->aux_clk); if (ret) { @@ -387,6 +381,12 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie) return ret; } + ret = clk_prepare_enable(res->phy_clk); + if (ret) { + dev_err(dev, "cannot prepare/enable phy clock\n"); + goto err_deassert_ahb; + } + /* wait for clock acquisition */ usleep_range(1000, 1500); @@ -404,8 +404,6 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie) err_clk_ref: clk_disable_unprepare(res->aux_clk); err_clk_aux: - clk_disable_unprepare(res->phy_clk); -err_clk_phy: clk_disable_unprepare(res->core_clk); err_clk_core: clk_disable_unprepare(res->iface_clk);