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author | Hans de Goede <hdegoede@redhat.com> | 2015-03-29 12:50:46 +0200 |
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committer | Felipe Balbi <balbi@ti.com> | 2015-05-27 12:20:36 -0500 |
commit | 24fe86a617c550fb9bdc6c8bd7cf647d3955f8ba (patch) | |
tree | 64618dd2e6e7af38b76e0a710d1408e3c85e4517 /include/linux/phy | |
parent | 7a64c7283ef83c82cb2125339c5d12092256614e (diff) | |
download | linux-24fe86a617c550fb9bdc6c8bd7cf647d3955f8ba.tar.gz linux-24fe86a617c550fb9bdc6c8bd7cf647d3955f8ba.tar.bz2 linux-24fe86a617c550fb9bdc6c8bd7cf647d3955f8ba.zip |
phy: sun4i-usb: Add a sunxi specific function for setting squelch-detect
The sunxi otg phy has a bug where it wrongly detects a high speed squelch
when reset on the root port gets de-asserted with a lo-speed device.
The workaround for this is to disable squelch detect before de-asserting
reset, and re-enabling it after the reset de-assert is done. Add a sunxi
specific phy function to allow the sunxi-musb glue to do this.
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'include/linux/phy')
-rw-r--r-- | include/linux/phy/phy-sun4i-usb.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/phy/phy-sun4i-usb.h b/include/linux/phy/phy-sun4i-usb.h new file mode 100644 index 000000000000..50aed92ea89c --- /dev/null +++ b/include/linux/phy/phy-sun4i-usb.h @@ -0,0 +1,26 @@ +/* + * Copyright (c) 2015 Hans de Goede <hdegoede@redhat.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef PHY_SUN4I_USB_H_ +#define PHY_SUN4I_USB_H_ + +#include "phy.h" + +/** + * sun4i_usb_phy_set_squelch_detect() - Enable/disable squelch detect + * @phy: reference to a sun4i usb phy + * @enabled: wether to enable or disable squelch detect + */ +void sun4i_usb_phy_set_squelch_detect(struct phy *phy, bool enabled); + +#endif |