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usb: phy: mxs: Add VF610 USB PHY support 

This adds support for the USB PHY in Vybrid VF610. We assume that
the disconnection without VBUS is also needed for Vybrid.

Tests showed, without MXS_PHY_NEED_IP_FIX, enumeration of devices
behind a USB Hub fails with errors:

[  215.163507] usb usb1-port1: cannot reset (err = -32)
[  215.170498] usb usb1-port1: cannot reset (err = -32)
[  215.185120] usb usb1-port1: cannot reset (err = -32)
[  215.191345] usb usb1-port1: cannot reset (err = -32)
[  215.202487] usb usb1-port1: cannot reset (err = -32)
[  215.207718] usb usb1-port1: Cannot enable. Maybe the USB cable is bad?
[  215.219317] usb usb1-port1: unable to enumerate USB device

Hence we also enable the MXS_PHY_NEED_IP_FIX flag.

Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Stefan Agner 2014-07-28 16:57:29 +02:00 committed by Felipe Balbi
parent 8913dc0bb9
commit d0ee68b59e
2 changed files with 7 additions and 0 deletions
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1
Documentation/devicetree/bindings/usb/mxs-phy.txt
View File

@ -5,6 +5,7 @@ Required properties:
* "fsl,imx23-usbphy" for imx23 and imx28
* "fsl,imx6q-usbphy" for imx6dq and imx6dl
* "fsl,imx6sl-usbphy" for imx6sl
* "fsl,vf610-usbphy" for Vybrid vf610
"fsl,imx23-usbphy" is still a fallback for other strings
- reg: Should contain registers location and length
- interrupts: Should contain phy interrupt

6
drivers/usb/phy/phy-mxs-usb.c
View File

@ -125,10 +125,16 @@ static const struct mxs_phy_data imx6sl_phy_data = {
MXS_PHY_NEED_IP_FIX,
};
static const struct mxs_phy_data vf610_phy_data = {
.flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS |
MXS_PHY_NEED_IP_FIX,
};
static const struct of_device_id mxs_phy_dt_ids[] = {
{ .compatible = "fsl,imx6sl-usbphy", .data = &imx6sl_phy_data, },
{ .compatible = "fsl,imx6q-usbphy", .data = &imx6q_phy_data, },
{ .compatible = "fsl,imx23-usbphy", .data = &imx23_phy_data, },
{ .compatible = "fsl,vf610-usbphy", .data = &vf610_phy_data, },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);