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a=ed25519-sha256; t=1772691640; l=2442; i=sumit.kumar@oss.qualcomm.com; s=20250409; h=from:subject:message-id; bh=pEc/tNwHOsDbqggAZEgpmAYE5s4SuUbHuqybzx9zRvo=; b=t+bdKd9rpg456k4BQVhND8q7IgX2Q/VxxdegM8QDbAtfYkujEJcMPuMBnFidboo8oaraGHI+l fGr4D6tEANDBwAWNqyzdV633zxWT7xdh5IMhQ6/B5lDsMAcYO7jFdNS X-Developer-Key: i=sumit.kumar@oss.qualcomm.com; a=ed25519; pk=3cys6srXqLACgA68n7n7KjDeM9JiMK1w6VxzMxr0dnM= X-Proofpoint-GUID: fYUxpNvxc_PyrzhSuWDPWXK5gyHwF2cz X-Authority-Analysis: v=2.4 cv=eqTSD4pX c=1 sm=1 tr=0 ts=69a920c4 cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=s_SlZju52n3xP1ZgpLgA:9 a=QEXdDO2ut3YA:10 a=iS9zxrgQBfv6-_F4QbHw:22 X-Proofpoint-ORIG-GUID: fYUxpNvxc_PyrzhSuWDPWXK5gyHwF2cz X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA1MDA0NyBTYWx0ZWRfX0PjugTftkn6L xHV3Ygr15tMIea6fljr3HrYWoWPRPYE/MIndtcrGCkSMCaHP1Nc/B6Je8XwebvhSc53f8Ft/90h S66fEZlTu9SvTQjwkNU8YgabC19ZMBU/cTsjpVVji9Au0xCK+mRoWptOe5AcWNWZZYeAyiDisHG E6zkp/wa9QRpajXFeEgJXXZCwTGLQGRe+KVBHbNOmGCL7stUF9pJ6urVJvBoG/Odux9gN6L1H97 jEnUj8Pf733zB/Iow15TmkwqmPoNE2TtVRgMl9CIVV4P9CH5cH8dDemcneUH+6J9wT/zjRzxeLp Q8AXR9EUy1ypLLIKVVlj2Lz5Kb7xkoGQ+03IeQE5bAAnZgEy5Czy00D3POPIKIRm7ruZnmdIPA4 ihpY3BpEszcM43nly6RTkBXUep31DkvwHoJFoi9zOMKUBJrLOZLJcxzxLMmRJClCTF4s63xmKTo jkK+HEbmYvwDK5EdfAA== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-05_01,2026-03-04_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 bulkscore=0 clxscore=1011 priorityscore=1501 malwarescore=0 lowpriorityscore=0 spamscore=0 impostorscore=0 adultscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603050047 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260304_222054_105584_045F5B52 X-CRM114-Status: GOOD ( 17.76 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 --- Changes in v2: - Fix error code preservation in dw_pcie_resume_noirq() to return actual error from dw_pcie_wait_for_link() instead of hardcoded -ETIMEDOUT (Mani). - Initialize ret variable to -ENOENT in dw_pcie_parse_root_ports() (Mani). - dw_pcie_host_init(): Remove -ENOENT error skipping to make parsing failures fatal for now, add TODO comment about making properties optional later (Mani). - Link to v1: https://lore.kernel.org/r/20260105-dt-parser-v1-0-b11c63cb5e2c@oss.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 | 175 ++++++++++++++++++---- 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, 232 insertions(+), 74 deletions(-) --- base-commit: 097a6c336d0080725c626fda118ecfec448acd0f change-id: 20251010-dt-parser-98b50ce18fc1 Best regards, -- Sumit Kumar