[PATCH v4 7/7] usb: dwc3: core: add dt support for dwc3 core

[Kishon Vijay Abraham I]

Added dwc3 support for dwc3 core and update the documentation with
device tree binding information.

Signed-off-by: Kishon Vijay Abraham I <kishon at ti.com>
---
 Documentation/devicetree/bindings/usb/dwc3.txt |   23 +++++++++++++++++++++++
 drivers/usb/dwc3/core.c                        |   14 ++++++++++++--
 2 files changed, 35 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/usb/dwc3.txt

diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
new file mode 100644
index 0000000..9ec9316
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/dwc3.txt
@@ -0,0 +1,23 @@
+synopsys DWC3 CORE
+
+DWC3- USB3 CONTROLLER
+
+Required properties:
+ - compatible: must be "synopsys,dwc3"
+ - reg : Address and length of the register set for the device
+ - interrupts: Interrupts used by the dwc3 controller.
+ - interrupt-parent: the phandle for the interrupt controller that
+   services interrupts for this device.
+
+Optional properties:
+ - tx-fifo-resize: determines if the FIFO *has* to be reallocated.
+
+This is usually a subnode to DWC3 glue to which it is connected.
+
+dwc3 at 4a030000 {
+	compatible = "synopsys,dwc3";
+	reg = <0x4a030000 0xcfff>;
+	interrupts = <0 92 4>
+	interrupt-parent = <&gic>
+	tx-fifo-resize;
+};
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index b923183..c76d8e9 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -491,8 +491,7 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
 	else
 		dwc->maximum_speed = DWC3_DCFG_SUPERSPEED;
 
-	if (of_get_property(node, "tx-fifo-resize", NULL))
-		dwc->needs_fifo_resize = true;
+	dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize");
 
 	pm_runtime_enable(dev);
 	pm_runtime_get_sync(dev);
@@ -619,11 +618,22 @@ static int __devexit dwc3_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id of_dwc3_match[] = {
+	{
+		.compatible = "synopsys,dwc3"
+	},
+	{ },
+};
+MODULE_DEVICE_TABLE(of, of_dwc3_match);
+#endif
+
 static struct platform_driver dwc3_driver = {
 	.probe		= dwc3_probe,
 	.remove		= __devexit_p(dwc3_remove),
 	.driver		= {
 		.name	= "dwc3",
+		.of_match_table	= of_match_ptr(of_dwc3_match),
 	},
 };
 
-- 
1.7.9.5