linux-kernel - [PATCH 0/2] PCI: dwc: Add multi-port controller support

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Message-Id: <20260105-dt-parser-v1-0-b11c63cb5e2c@oss.qualcomm.com>
Date: Mon, 05 Jan 2026 17:57:53 +0530
From: Sumit Kumar <sumit.kumar@....qualcomm.com>
To: Bjorn Helgaas <bhelgaas@...gle.com>, Jingoo Han <jingoohan1@...il.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kwilczynski@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Richard Zhu <hongxing.zhu@....com>,
        Lucas Stach <l.stach@...gutronix.de>, Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>, Yue Wang <yue.wang@...ogic.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Greentime Hu <greentime.hu@...ive.com>,
        Samuel Holland <samuel.holland@...ive.com>,
        Chuanhua Lei <lchuanhua@...linear.com>,
        Marek Vasut <marek.vasut+renesas@...il.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Pratyush Anand <pratyush.anand@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, imx@...ts.linux.dev,
        linux-amlogic@...ts.infradead.org, linux-arm-msm@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-riscv@...ts.infradead.org,
        Sumit Kumar <sumit.kumar@....qualcomm.com>
Subject: [PATCH 0/2] PCI: dwc: Add multi-port controller support

This series adds support for multi-port PCIe controllers in the DesignWare
driver. Currently, the driver only supports a single Root Port with
controller-level properties, which doesn't work for multi-port controllers
where each port may have different configurations.

This series introduces a per-port structure and parsing API that allows 
each Root Port to be configured independently via pcie@N child nodes in
device tree, while maintaining backward compatibility with existing 
single-port bindings.

Signed-off-by: Sumit Kumar <sumit.kumar@....qualcomm.com>
---
Sumit Kumar (2):
      PCI: API changes for multi-port controller support
      PCI: dwc: Add multi-port controller support

 drivers/pci/controller/dwc/pci-exynos.c           |   4 +-
 drivers/pci/controller/dwc/pci-imx6.c             |  15 +-
 drivers/pci/controller/dwc/pci-meson.c            |   1 -
 drivers/pci/controller/dwc/pcie-designware-host.c | 168 ++++++++++++++++++----
 drivers/pci/controller/dwc/pcie-designware.c      |  32 ++---
 drivers/pci/controller/dwc/pcie-designware.h      |  17 ++-
 drivers/pci/controller/dwc/pcie-fu740.c           |   6 +-
 drivers/pci/controller/dwc/pcie-intel-gw.c        |  13 +-
 drivers/pci/controller/dwc/pcie-qcom-common.c     |   5 +-
 drivers/pci/controller/dwc/pcie-qcom-ep.c         |   4 +-
 drivers/pci/controller/dwc/pcie-qcom.c            |   4 +-
 drivers/pci/controller/dwc/pcie-rcar-gen4.c       |  13 +-
 drivers/pci/controller/dwc/pcie-spear13xx.c       |   5 +-
 drivers/pci/controller/dwc/pcie-tegra194.c        |   4 +-
 drivers/pci/of.c                                  |   6 +-
 drivers/pci/pci.h                                 |   2 +
 16 files changed, 226 insertions(+), 73 deletions(-)
---
base-commit: 097a6c336d0080725c626fda118ecfec448acd0f
change-id: 20251010-dt-parser-98b50ce18fc1

Best regards,
-- 
Sumit Kumar <sumit.kumar@....qualcomm.com>