blob: 59ff6b3992d5d506cc1317814e9cae454a35d78d [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 <mmc.h>
#include <platform/clock.h>
#include <platform/iomap.h>
#include <platform/timer.h>
void clock_config_uart_dm(uint8_t id)
{
int ret;
char clk_name[64];
snprintf(clk_name, sizeof(clk_name), "uart%u_iface_clk", id);
ret = clk_get_set_enable(clk_name, 0, 1);
if (ret)
{
dprintf(CRITICAL, "failed to set %s ret = %d\n", clk_name, ret);
ASSERT(0);
}
snprintf(clk_name, sizeof(clk_name), "uart%u_core_clk", id);
ret = clk_get_set_enable(clk_name, 7372800, 1);
if (ret)
{
dprintf(CRITICAL, "failed to set %s ret = %d\n", clk_name, 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);
}
}
void clock_init_mmc(uint32_t interface)
{
char clk_name[64];
int ret;
snprintf(clk_name, sizeof(clk_name), "sdc%u_iface_clk", interface);
/* enable interface clock */
ret = clk_get_set_enable(clk_name, 0, 1);
if(ret)
{
dprintf(CRITICAL, "failed to set sdc1_iface_clk ret = %d\n", ret);
ASSERT(0);
}
}
/* Configure MMC clock */
void clock_config_mmc(uint32_t interface, uint32_t freq)
{
int ret = 0;
char clk_name[64];
snprintf(clk_name, sizeof(clk_name), "sdc%u_core_clk", interface);
if(freq == MMC_CLK_400KHZ)
{
ret = clk_get_set_enable(clk_name, 400000, 1);
}
else if(freq == MMC_CLK_50MHZ)
{
ret = clk_get_set_enable(clk_name, 50000000, 1);
}
else if(freq == MMC_CLK_200MHZ)
{
ret = clk_get_set_enable(clk_name, 200000000, 1);
}
else if(freq == MMC_CLK_177MHZ)
{
ret = clk_get_set_enable(clk_name, 177770000, 1);
}
else
{
dprintf(CRITICAL, "sdc frequency (%u) is not supported\n", freq);
ASSERT(0);
}
if(ret)
{
dprintf(CRITICAL, "failed to set %s ret = %d\n", clk_name, ret);
ASSERT(0);
}
}
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);
}
}