blob: 4f2ad476b8b2e81bba166e5dd732a0f6430b26b5 [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>
#include <qtimer.h>
__WEAK int platform_is_msm8994()
{
return 0;
}
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);
/* set CLAMP_N_EN and stay with disabled USB PHY */
writel(0x23, QUSB2PHY_PORT_POWERDOWN);
/* Set HS impedance to 42ohms */
writel(0xA0, QUSB2PHY_PORT_TUNE1);
/* Set TX current to 19mA, TX SR and TX bias current to 1, 1 */
writel(0xA5, QUSB2PHY_PORT_TUNE2);
/* Increase autocalibration bias circuit settling time
* and enable utocalibration */
writel(0x81, QUSB2PHY_PORT_TUNE3);
writel(0x85, QUSB2PHY_PORT_TUNE4);
/* Wait for tuning params to take effect right before re-enabling power*/
udelay(10);
/* Disable the PHY */
writel(0x23, QUSB2PHY_PORT_POWERDOWN);
/* Enable ULPI mode */
if (platform_is_msm8994())
writel(0x0, QUSB2PHY_PORT_UTMI_CTRL2);
/* Enable PHY */
/* set CLAMP_N_EN and USB PHY is enabled*/
writel(0x22, QUSB2PHY_PORT_POWERDOWN);
}