[PATCH V6 03/12] PCI: dwc: Parse Root Port nodes in dw_pcie_host_init()

[Sherry Sun <sherry.sun@nxp.com>]

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 <sherry.sun@nxp.com>
---
 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 6ae6189e9b8a..6ceb146e9a04 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