[PATCH V9 03/13] PCI: dwc: Parse Root Port nodes in dw_pcie_host_init()
From: Sherry Sun <hidden>
Date: 2026-03-18 06:28:24
Also in:
imx, linux-devicetree, linux-pci, lkml
Subsystem:
pci driver for synopsys designware, pci native host bridge and endpoint drivers, pci subsystem, the rest · Maintainers:
Jingoo Han, Manivannan Sadhasivam, Lorenzo Pieralisi, Krzysztof Wilczyński, Bjorn Helgaas, Linus Torvalds
Add support for parsing Root Port child nodes in dw_pcie_host_init() using pci_host_common_parse_ports(). This allows DWC-based drivers to specify Root Port properties (like reset GPIOs) in individual Root Port nodes rather than in the host bridge node. Signed-off-by: Sherry Sun <redacted> --- drivers/pci/controller/dwc/pcie-designware-host.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index a74339982c24..9608f9fcd1b3 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c@@ -20,6 +20,7 @@ #include <linux/platform_device.h> #include "../../pci.h" +#include "../pci-host-common.h" #include "pcie-designware.h" static struct pci_ops dw_pcie_ops;
@@ -581,6 +582,13 @@ int dw_pcie_host_init(struct dw_pcie_rp *pp) pp->bridge = bridge; + /* Parse Root Port nodes if present */ + ret = pci_host_common_parse_ports(dev, bridge); + if (ret && ret != -ENOENT) { + dev_err(dev, "Failed to parse Root Port nodes: %d\n", ret); + return ret; + } + ret = dw_pcie_host_get_resources(pp); if (ret) return ret;
--
2.37.1