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Commit f8515f06 authored by Kishon Vijay Abraham I's avatar Kishon Vijay Abraham I Committed by Felipe Balbi
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usb: twl4030: Add device tree support for twl4030 usb 



Add device tree support for twl4030 usb driver.
Update the Documentation with device tree binding information.

Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent ff0a1f39

Documentation/devicetree/bindings/usb/twlxxxx-usb.txt

+19 −0
Original line number Diff line number Diff line
@@ -19,3 +19,22 @@ Board specific device node entry 
&twl6030-usb {

	usb-supply = <&vusb>;

};



TWL4030 USB PHY AND COMPARATOR

 - compatible : Should be "ti,twl4030-usb"

 - interrupts : The interrupt numbers to the cpu should be specified. First

   interrupt number is the otg interrupt number that raises ID interrupts

   and VBUS interrupts. The second interrupt number is optional.

 - <supply-name>-supply : phandle to the regulator device tree node.

   <supply-name> should be vusb1v5, vusb1v8 and vusb3v1

 - usb_mode : The mode used by the phy to connect to the controller. "1"

   specifies "ULPI" mode and "2" specifies "CEA2011_3PIN" mode.



twl4030-usb {

	compatible = "ti,twl4030-usb";

	interrupts = < 10 4 >;

	usb1v5-supply = <&vusb1v5>;

	usb1v8-supply = <&vusb1v8>;

	usb3v1-supply = <&vusb3v1>;

	usb_mode = <1>;

};

drivers/usb/otg/twl4030-usb.c

+20 −6
Original line number Diff line number Diff line
@@ -585,23 +585,28 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev) 
	struct twl4030_usb	*twl;

	int			status, err;

	struct usb_otg		*otg;



	if (!pdata) {

		dev_dbg(&pdev->dev, "platform_data not available\n");

		return -EINVAL;

	}

	struct device_node	*np = pdev->dev.of_node;



	twl = devm_kzalloc(&pdev->dev, sizeof *twl, GFP_KERNEL);

	if (!twl)

		return -ENOMEM;



	if (np)

		of_property_read_u32(np, "usb_mode",

				(enum twl4030_usb_mode *)&twl->usb_mode);

	else if (pdata)

		twl->usb_mode = pdata->usb_mode;

	else {

		dev_err(&pdev->dev, "twl4030 initialized without pdata\n");

		return -EINVAL;

	}



	otg = devm_kzalloc(&pdev->dev, sizeof *otg, GFP_KERNEL);

	if (!otg)

		return -ENOMEM;



	twl->dev		= &pdev->dev;

	twl->irq		= platform_get_irq(pdev, 0);

	twl->usb_mode		= pdata->usb_mode;

	twl->vbus_supplied	= false;

	twl->asleep		= 1;

	twl->linkstat		= OMAP_MUSB_UNKNOWN;
@@ -690,12 +695,21 @@ static int __exit twl4030_usb_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_OF

static const struct of_device_id twl4030_usb_id_table[] = {

	{ .compatible = "ti,twl4030-usb" },

	{}

};

MODULE_DEVICE_TABLE(of, twl4030_usb_id_table);

#endif



static struct platform_driver twl4030_usb_driver = {

	.probe		= twl4030_usb_probe,

	.remove		= __exit_p(twl4030_usb_remove),

	.driver		= {

		.name	= "twl4030_usb",

		.owner	= THIS_MODULE,

		.of_match_table = of_match_ptr(twl4030_usb_id_table),

	},

};