pci: mvebu: enable driver usage on Kirkwood

We allow the pci-mvebu driver to be compiled on the Kirkwood platform,
and add the 'marvell,kirkwood-pcie' as a compatible string supported
by the driver.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

Documentation/devicetree/bindings/pci/mvebu-pci.txt

@@ -4,6 +4,7 @@ Mandatory properties:
 - compatible: one of the following values:
     marvell,armada-370-pcie
     marvell,armada-xp-pcie
+    marvell,kirkwood-pcie
 - #address-cells, set to <3>
 - #size-cells, set to <2>
 - #interrupt-cells, set to <1>

drivers/pci/host/Kconfig

@@ -3,6 +3,6 @@ menu "PCI host controller drivers"
 
 config PCI_MVEBU
 	bool "Marvell EBU PCIe controller"
-	depends on ARCH_MVEBU
+	depends on ARCH_MVEBU || ARCH_KIRKWOOD
 
 endmenu

drivers/pci/host/pci-mvebu.c

@@ -854,6 +854,7 @@ static int __init mvebu_pcie_probe(struct platform_device *pdev)
 static const struct of_device_id mvebu_pcie_of_match_table[] = {
 	{ .compatible = "marvell,armada-xp-pcie", },
 	{ .compatible = "marvell,armada-370-pcie", },
+	{ .compatible = "marvell,kirkwood-pcie", },
 	{},
 };
 MODULE_DEVICE_TABLE(of, mvebu_pcie_of_match_table);