Commit 77216702 authored by Chuanjia Liu's avatar Chuanjia Liu Committed by Lorenzo Pieralisi
Browse files

PCI: mediatek: Use PCI domain to handle ports detection 

Use of_get_pci_domain_nr() to get the pci domain.

If the "linux,pci-domain" property is present, we assume that the PCIe
bridge is an individual bridge, hence we only need to parse one port.

Link: https://lore.kernel.org/r/20210823032800.1660-5-chuanjia.liu@mediatek.com


Signed-off-by: default avatarChuanjia Liu <chuanjia.liu@mediatek.com>
[lorenzo.pieralisi@arm.com: commit log]
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: default avatarRyder Lee <ryder.lee@mediatek.com>
parent 436960bb

drivers/pci/controller/pcie-mediatek.c

+17 −12
Original line number Diff line number Diff line
@@ -1048,14 +1048,14 @@ static int mtk_pcie_setup(struct mtk_pcie *pcie) 
	struct device *dev = pcie->dev;

	struct device_node *node = dev->of_node, *child;

	struct mtk_pcie_port *port, *tmp;

	int err;

	int err, slot;



	slot = of_get_pci_domain_nr(dev->of_node);

	if (slot < 0) {

		for_each_available_child_of_node(node, child) {

		int slot;



			err = of_pci_get_devfn(child);

			if (err < 0) {

			dev_err(dev, "failed to parse devfn: %d\n", err);

				dev_err(dev, "failed to get devfn: %d\n", err);

				goto error_put_node;

			}
@@ -1065,6 +1065,11 @@ static int mtk_pcie_setup(struct mtk_pcie *pcie) 
			if (err)

				goto error_put_node;

		}

	} else {

		err = mtk_pcie_parse_port(pcie, node, slot);

		if (err)

			return err;

	}



	err = mtk_pcie_subsys_powerup(pcie);

	if (err)