Commit 0fc924bd authored by Ivan T. Ivanov's avatar Ivan T. Ivanov Committed by Greg Kroah-Hartman
Browse files

USB: ehci-msm: Add device tree support and binding information 



Allows MSM EHCI controller to be specified via device tree.

Signed-off-by: default avatarIvan T. Ivanov <iivanov@mm-sol.com>
Acked-by: default avatarDavid Brown <davidb@codeaurora.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent e4f0da05

Documentation/devicetree/bindings/usb/msm-hsusb.txt

0 → 100644
+17 −0
Original line number Diff line number Diff line 
MSM SoC HSUSB controllers



EHCI



Required properties:

- compatible:	Should contain "qcom,ehci-host"

- regs:			offset and length of the register set in the memory map

- usb-phy:		phandle for the PHY device



Example EHCI controller device node:



	ehci: ehci@f9a55000 {

		compatible = "qcom,ehci-host";

		reg = <0xf9a55000 0x400>;

		usb-phy = <&usb_otg>;

	};

drivers/usb/host/ehci-msm.c

+13 −2
Original line number Diff line number Diff line
@@ -108,10 +108,14 @@ static int ehci_msm_probe(struct platform_device *pdev) 
	 * powering up VBUS, mapping of registers address space and power

	 * management.

	 */

	if (pdev->dev.of_node)

		phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);

	else

		phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);



	if (IS_ERR(phy)) {

		dev_err(&pdev->dev, "unable to find transceiver\n");

		ret = -ENODEV;

		ret = -EPROBE_DEFER;

		goto put_hcd;

	}
@@ -187,12 +191,19 @@ static const struct dev_pm_ops ehci_msm_dev_pm_ops = { 
	.resume          = ehci_msm_pm_resume,

};



static struct of_device_id msm_ehci_dt_match[] = {

	{ .compatible = "qcom,ehci-host", },

	{}

};

MODULE_DEVICE_TABLE(of, msm_ehci_dt_match);



static struct platform_driver ehci_msm_driver = {

	.probe	= ehci_msm_probe,

	.remove	= ehci_msm_remove,

	.driver = {

		   .name = "msm_hsusb_host",

		   .pm = &ehci_msm_dev_pm_ops,

		   .of_match_table = msm_ehci_dt_match,

	},

};