Re: [PATCH V8 03/13] PCI: dwc: Parse Root Port nodes in dw_pcie_host_init()
From: Manivannan Sadhasivam <mani@kernel.org>
Date: 2026-03-16 05:56:58
Also in:
imx, linux-devicetree, linux-pci, lkml
On Fri, Mar 13, 2026 at 10:08:13AM +0800, Sherry Sun wrote:
quoted hunk ↗ jump to hunk
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) {
Is there an incentive in the -ENOENT error code? Should the API just return 0 if no ports are found? - Mani -- மணிவண்ணன் சதாசிவம்