69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2008, Google Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
* Copyright (c) 2009-2010, 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.
|
||
|
|
*
|
||
|
|
* 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 AND FITNESS
|
||
|
|
* FOR A PARTICULAR PURPOSE 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 <stdint.h>
|
||
|
|
#include <kernel/thread.h>
|
||
|
|
#include <platform/iomap.h>
|
||
|
|
#include <reg.h>
|
||
|
|
|
||
|
|
#define A11S_CLK_CNTL 0xAC100100
|
||
|
|
#define A11S_CLK_SEL 0xAC100104
|
||
|
|
|
||
|
|
#define SCPLL_CTL 0xA8800004
|
||
|
|
#define SCPLL_CAL 0xA8800008
|
||
|
|
#define SCPLL_CTLE 0xA8800024
|
||
|
|
#define SCPLL_STAT 0xA8800010
|
||
|
|
|
||
|
|
void acpu_clock_init(void)
|
||
|
|
{
|
||
|
|
unsigned val;
|
||
|
|
|
||
|
|
/* Go to standby */
|
||
|
|
writel(0x2, SCPLL_CTL);
|
||
|
|
thread_sleep(100);
|
||
|
|
|
||
|
|
/* Calibrate for 384-1497 MHz */
|
||
|
|
writel(0x270A0000, SCPLL_CAL);
|
||
|
|
writel(0x4, SCPLL_CTL);
|
||
|
|
thread_sleep(10);
|
||
|
|
while(readl(SCPLL_STAT) & 0x2);
|
||
|
|
|
||
|
|
/* Shot-switch directly to 768MHz */
|
||
|
|
writel(0x001400A4, SCPLL_CTLE);
|
||
|
|
writel(0x7, SCPLL_CTL);
|
||
|
|
thread_sleep(10);
|
||
|
|
while(readl(SCPLL_STAT) & 0x3);
|
||
|
|
|
||
|
|
val = readl(A11S_CLK_SEL);
|
||
|
|
val &= ~(0x3 << 1);
|
||
|
|
val |= (1 << 1);
|
||
|
|
writel(val, A11S_CLK_SEL);
|
||
|
|
}
|
||
|
|
|