Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 5088b6f5 authored by Kishon Vijay Abraham I's avatar Kishon Vijay Abraham I Committed by Felipe Balbi
Browse files

usb: dwc3: core: add dt support for dwc3 core 



Added dt support for dwc3 core and update the documentation with
device tree binding information. Getting a PHY is now done using
devm_usb_get_phy_by_phandle() for dt boot.

Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 0c4c8bbb

Documentation/devicetree/bindings/usb/dwc3.txt

0 → 100644
+22 −0
Original line number Diff line number Diff line 
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.

 - usb-phy : array of phandle for the PHY 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@4a030000 {

	compatible = "synopsys,dwc3";

	reg = <0x4a030000 0xcfff>;

	interrupts = <0 92 4>

	usb-phy = <&usb2_phy>, <&usb3,phy>;

	tx-fifo-resize;

};

drivers/usb/dwc3/core.c

+20 −4
Original line number Diff line number Diff line
@@ -420,13 +420,19 @@ static int dwc3_probe(struct platform_device *pdev) 
		return -ENOMEM;

	}



	if (node) {

		dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0);

		dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1);

	} else {

		dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);

		dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);

	}



	if (IS_ERR_OR_NULL(dwc->usb2_phy)) {

		dev_err(dev, "no usb2 phy configured\n");

		return -EPROBE_DEFER;

	}



	dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);

	if (IS_ERR_OR_NULL(dwc->usb3_phy)) {

		dev_err(dev, "no usb3 phy configured\n");

		return -EPROBE_DEFER;
@@ -450,8 +456,7 @@ static int 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);
@@ -580,11 +585,22 @@ static int 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		= dwc3_remove,

	.driver		= {

		.name	= "dwc3",

		.of_match_table	= of_match_ptr(of_dwc3_match),

	},

};