From patchwork Fri Feb 25 03:44:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hongxing Zhu X-Patchwork-Id: 12759622 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E506FC433F5 for ; Fri, 25 Feb 2022 03:52:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235146AbiBYDx2 (ORCPT ); Thu, 24 Feb 2022 22:53:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39656 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232996AbiBYDx2 (ORCPT ); Thu, 24 Feb 2022 22:53:28 -0500 Received: from inva021.nxp.com (inva021.nxp.com [92.121.34.21]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BF0BD187BA3; Thu, 24 Feb 2022 19:52:55 -0800 (PST) Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 3889D2011FC; Fri, 25 Feb 2022 04:52:54 +0100 (CET) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id C1759201161; Fri, 25 Feb 2022 04:52:53 +0100 (CET) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 2B3B7183AC97; Fri, 25 Feb 2022 11:52:52 +0800 (+08) From: Richard Zhu To: l.stach@pengutronix.de, bhelgaas@google.com, broonie@kernel.org, lorenzo.pieralisi@arm.com, jingoohan1@gmail.com, festevam@gmail.com, francesco.dolcini@toradex.com Cc: hongxing.zhu@nxp.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com Subject: [PATCH v8 0/8] PCI: imx6: refine codes and add compliance tests mode support Date: Fri, 25 Feb 2022 11:44:19 +0800 Message-Id: <1645760667-10510-1-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 X-Virus-Scanned: ClamAV using ClamSMTP Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org This series patches refine pci-imx6 driver and do the following changes. - Encapsulate the clock enable into one standalone function - Add the error propagation from host_init - Disable the regulators and clocks when link never comes up - Add the compliance tests mode support Main changes from v7 to v8: Regarding Bjorn's review comments. - Align the format of the dev_info message and refine commit log of #6/7/8 patches. - Rename the err_reset_phy label, since there is no PHY reset in the out. Main changes from v6 to v7: - Keep the regulator usage counter balance in the #5 patch of v6 series. Main changes from v5 to v6: - Refer to the following discussion with Fabio, fix the dump by his patch. https://patchwork.kernel.org/project/linux-pci/patch/1641368602-20401-6-git-send-email-hongxing.zhu@nxp.com/ Refine and rebase this patch-set after Fabio' dump fix patch is merged. - Add one new #4 patch to disable i.MX6QDL REF clock too when disable clocks - Split the regulator refine codes into one standalone patch #5 in this version. Main changes from v4 to v5: - Since i.MX8MM PCIe support had been merged. Based on Lorenzo's git repos, resend the patch-set after rebase. Main changes from v3 to v4: - Regarding Mark's comments, delete the regulator_is_enabled() check. - Squash #3 and #6 of v3 patch into #5 patch of v4 set. Main changes from v2 to v3: - Add "Reviewed-by: Lucas Stach " tag into first two patches. - Add a Fixes tag into #3 patch. - Split the #4 of v2 to two patches, one is clock disable codes move, the other one is the acutal clock unbalance fix. - Add a new host_exit() callback into dw_pcie_host_ops, then it could be invoked to handle the unbalance issue in the error handling after host_init() function when link is down. - Add a new host_exit() callback for i.MX PCIe driver to handle this case in the error handling after host_init. Main changes from v1 to v2: Regarding Lucas' comments. - Move the placement of the new imx6_pcie_clk_enable() to avoid the forward declarition. - Seperate the second patch of v1 patch-set to three patches. - Use the module_param to replace the kernel command line. Regarding Bjorn's comments: - Use the cover-letter for a multi-patch series. - Correct the subject line, and refine the commit logs. For example, remove the timestamp of the logs. drivers/pci/controller/dwc/pci-imx6.c | 223 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------------------------------- drivers/pci/controller/dwc/pcie-designware-host.c | 5 ++- drivers/pci/controller/dwc/pcie-designware.h | 1 + 3 files changed, 150 insertions(+), 79 deletions(-) [PATCH v8 1/8] PCI: imx6: Encapsulate the clock enable into one [PATCH v8 2/8] PCI: imx6: Add the error propagation from host_init [PATCH v8 3/8] PCI: imx6: Move imx6_pcie_clk_disable() earlier [PATCH v8 4/8] PCI: imx6: Disable iMX6QDL PCIe REF clock when disable [PATCH v8 5/8] PCI: imx6: Refine the regulator usage [PATCH v8 6/8] PCI: dwc: Add dw_pcie_host_ops.host_exit() callback [PATCH v8 7/8] PCI: imx6: Disable clocks and regulators after link is [PATCH v8 8/8] PCI: imx6: Add compliance tests mode support