blob: 8e5957987be6d63b04e82e72a7f90db5831b9093 [file] [log] [blame]
/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <platform/iomap.h>
#include <reg.h>
#include <bits.h>
#include <debug.h>
void qusb2_phy_reset(void)
{
uint32_t val;
/* Block Reset */
val = readl(GCC_QUSB2_PHY_BCR) | BIT(0);
writel(val, GCC_QUSB2_PHY_BCR);
udelay(10);
writel(val & ~BIT(0), GCC_QUSB2_PHY_BCR);
/* Deassert POWERDOWN by clearing bit 0 to enable the PHY */
val = readl(QUSB2PHY_PORT_POWERDOWN);
writel(val & ~BIT(0), QUSB2PHY_PORT_POWERDOWN);
udelay(10);
/* set CLAMP_N_EN and FREEZIO_N */
writel(0x22, QUSB2PHY_PORT_POWERDOWN);
}