blob: 4af598bdd8b4fee51f92f26bdf9fefe7a55524c7 [file] [log] [blame]
/*
* Copyright (c) 2013-2014, 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 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 BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 <err.h>
#include <assert.h>
#include <debug.h>
#include <reg.h>
#include <clock.h>
#include <pm8x41.h>
#include <platform/clock.h>
#include <platform/iomap.h>
#include <platform/timer.h>
void hsusb_clock_init(void)
{
int ret;
struct clk *iclk;
struct clk *cclk;
iclk = clk_get("usb_iface_clk");
cclk = clk_get("usb_core_clk");
ASSERT(iclk);
ASSERT(cclk);
/* Disable interface and core clk */
clk_disable(iclk);
clk_disable(cclk);
/* Start the block reset for usb */
writel(1, USB_HS_BCR);
/* Take usb block out of reset */
writel(0, USB_HS_BCR);
ret = clk_enable(iclk);
if(ret)
{
dprintf(CRITICAL, "failed to set usb_iface_clk ret = %d\n", ret);
ASSERT(0);
}
ret = clk_set_rate(cclk, 75000000);
if(ret)
{
dprintf(CRITICAL, "failed to set_rate of usb_core_clk ret = %d\n", ret);
ASSERT(0);
}
ret = clk_enable(cclk);
if(ret)
{
dprintf(CRITICAL, "failed to enable usb_core_clk ret = %d\n", ret);
ASSERT(0);
}
}
void clock_config_uart_dm(uint8_t id)
{
int ret;
char clk_name[64];
ret = clk_get_set_enable("uart_iface_clk", 0, 1);
if (ret)
{
dprintf(CRITICAL, "failed to set uart_iface_clk ret = %d\n", ret);
ASSERT(0);
}
snprintf(clk_name, 64, "uart%u_core_clk", id);
ret = clk_get_set_enable(clk_name, 7372800, 1);
if (ret)
{
dprintf(CRITICAL, "failed to set uart%u_core_clk ret = %d\n", id, ret);
ASSERT(0);
}
}
/*
* Disable power collapse using GDSCR:
* Globally Distributed Switch Controller Register
*/
void clock_usb30_gdsc_enable(void)
{
uint32_t reg = readl(GCC_USB30_GDSCR);
reg &= ~(0x1);
writel(reg, GCC_USB30_GDSCR);
}
/* enables usb30 clocks */
void clock_usb30_init(void)
{
int ret;
ret = clk_get_set_enable("usb30_iface_clk", 0, 1);
if(ret)
{
dprintf(CRITICAL, "failed to set usb30_iface_clk. ret = %d\n", ret);
ASSERT(0);
}
clock_usb30_gdsc_enable();
ret = clk_get_set_enable("usb30_master_clk", 125000000, 1);
if(ret)
{
dprintf(CRITICAL, "failed to set usb30_master_clk. ret = %d\n", ret);
ASSERT(0);
}
ret = clk_get_set_enable("usb30_pipe_clk", 19200000, 1);
if(ret)
{
dprintf(CRITICAL, "failed to set usb30_pipe_clk. ret = %d\n", ret);
ASSERT(0);
}
ret = clk_get_set_enable("usb30_aux_clk", 1000000, 1);
if(ret)
{
dprintf(CRITICAL, "failed to set usb30_aux_clk. ret = %d\n", ret);
ASSERT(0);
}
ret = clk_get_set_enable("usb_phy_cfg_ahb_clk", 0, 1);
if(ret)
{
dprintf(CRITICAL, "failed to set usb_phy_cfg_ahb_clk ret = %d\n", ret);
ASSERT(0);
}
pm8x41_lnbb_clock_ctrl(1);
}
void clock_bumpup_pipe3_clk()
{
int ret = 0;
ret = clk_get_set_enable("usb30_pipe_clk", 125000000, 0);
if(ret)
{
dprintf(CRITICAL, "failed to set usb30_pipe_clk. ret = %d\n", ret);
ASSERT(0);
}
}