From patchwork Fri Oct 22 07:12:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 12577253 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C0CD9C433EF for ; Fri, 22 Oct 2021 07:37:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 90C5860C40 for ; Fri, 22 Oct 2021 07:37:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231941AbhJVHkI (ORCPT ); Fri, 22 Oct 2021 03:40:08 -0400 Received: from inva021.nxp.com ([92.121.34.21]:45906 "EHLO inva021.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231773AbhJVHkI (ORCPT ); Fri, 22 Oct 2021 03:40:08 -0400 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id D7651201B52; Fri, 22 Oct 2021 09:37:49 +0200 (CEST) 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 9FC132005EC; Fri, 22 Oct 2021 09:37:49 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 4D5BB183AC94; Fri, 22 Oct 2021 15:37:48 +0800 (+08) From: Richard Zhu To: l.stach@pengutronix.de, bhelgaas@google.com, lorenzo.pieralisi@arm.com, jingoohan1@gmail.com Cc: linux-pci@vger.kernel.org, linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH v3 0/7] PCI: imx6: refine codes and add compliance tests mode support Date: Fri, 22 Oct 2021 15:12:23 +0800 Message-Id: <1634886750-13861-1-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 - Add one new host_exit callback, used to balance the usage of the regulator and clocks when link never came up - Add the compliance tests mode support 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 | 176 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------------------------- drivers/pci/controller/dwc/pcie-designware-host.c | 5 ++- drivers/pci/controller/dwc/pcie-designware.h | 1 + 3 files changed, 119 insertions(+), 63 deletions(-) [PATCH v3 1/7] PCI: imx6: Encapsulate the clock enable into one [PATCH v3 2/7] PCI: imx6: Add the error propagation from host_init [PATCH v3 3/7] PCI: imx6: Fix the regulator dump when link never came [PATCH v3 4/7] PCI: imx6: move the clock disable function to a proper [PATCH v3 5/7] PCI: dwc: add a new callback host exit function into [PATCH v3 6/7] PCI: imx6: Fix the reference handling unbalance when [PATCH v3 7/7] PCI: imx6: Add the compliance tests mode support