Commit c50f056c authored by Tomasz Figa's avatar Tomasz Figa Committed by Felipe Balbi
Browse files

usb: gadget: s3c-hsotg: Allow driver instantiation using device tree 



This patch adds OF match table to the driver to allow instantiating it
using device tree.

Signed-off-by: default avatarTomasz Figa <t.figa@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 22a5aa17

Documentation/devicetree/bindings/usb/samsung-hsotg.txt

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+40 −0
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Samsung High Speed USB OTG controller

-----------------------------



The Samsung HSOTG IP can be found on Samsung SoCs, from S3C6400 onwards.

It gives functionality of OTG-compliant USB 2.0 host and device with

support for USB 2.0 high-speed (480Mbps) and full-speed (12 Mbps)

operation.



Currently only device mode is supported.



Binding details

-----



Required properties:

- compatible: "samsung,s3c6400-hsotg" should be used for all currently

    supported SoC,

- interrupt-parent: phandle for the interrupt controller to which the

    interrupt signal of the HSOTG block is routed,

- interrupts: specifier of interrupt signal of interrupt controller,

    according to bindings of interrupt controller,

- clocks: contains an array of clock specifiers:

    - first entry: OTG clock

- clock-names: contains array of clock names:

    - first entry: must be "otg"

- vusb_d-supply: phandle to voltage regulator of digital section,

- vusb_a-supply: phandle to voltage regulator of analog section.



Example

-----



	hsotg@12480000 {

		compatible = "samsung,s3c6400-hsotg";

		reg = <0x12480000 0x20000>;

		interrupts = <0 71 0>;

		clocks = <&clock 305>;

		clock-names = "otg";

		vusb_d-supply = <&vusb_reg>;

		vusb_a-supply = <&vusbdac_reg>;

	};

drivers/usb/gadget/s3c-hsotg.c

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@@ -29,6 +29,7 @@ 
#include <linux/slab.h>

#include <linux/clk.h>

#include <linux/regulator/consumer.h>

#include <linux/of_platform.h>



#include <linux/usb/ch9.h>

#include <linux/usb/gadget.h>
@@ -3648,10 +3649,19 @@ static int s3c_hsotg_remove(struct platform_device *pdev) 
#define s3c_hsotg_resume NULL

#endif



#ifdef CONFIG_OF

static const struct of_device_id s3c_hsotg_of_ids[] = {

	{ .compatible = "samsung,s3c6400-hsotg", },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, s3c_hsotg_of_ids);

#endif



static struct platform_driver s3c_hsotg_driver = {

	.driver		= {

		.name	= "s3c-hsotg",

		.owner	= THIS_MODULE,

		.of_match_table = of_match_ptr(s3c_hsotg_of_ids),

	},

	.probe		= s3c_hsotg_probe,

	.remove		= s3c_hsotg_remove,