aa29b11b3f
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. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Acked-by: Jun Nie <jun.nie@linaro.org>
35 lines
863 B
C
35 lines
863 B
C
/*
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* Copyright (C) 2017 Jagan Teki <jagan@amarulasolutions.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __GENERIC_PHY_SUN4I_USB_H
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#define __GENERIC_PHY_SUN4I_USB_H
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/**
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* sun4i_usb_phy_id_detect - detect ID pin of USB PHY
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*
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* @phy: USB PHY port to detect ID pin
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* @return 0 if OK, or a negative error code
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*/
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int sun4i_usb_phy_id_detect(struct phy *phy);
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/**
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* sun4i_usb_phy_vbus_detect - detect VBUS pin of USB PHY
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*
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* @phy: USB PHY port to detect VBUS pin
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* @return 0 if OK, or a negative error code
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*/
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int sun4i_usb_phy_vbus_detect(struct phy *phy);
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/**
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* sun4i_usb_phy_set_squelch_detect() - Enable/disable squelch detect
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*
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* @phy: reference to a sun4i usb phy
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* @enabled: wether to enable or disable squelch detect
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*/
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void sun4i_usb_phy_set_squelch_detect(struct phy *phy, bool enabled);
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#endif /*__GENERIC_PHY_SUN4I_USB_H */
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