23b5e15a29
Add mxs specific clocks, pll, reference clock (PFD), integer divider and fractional divider. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
29 lines
695 B
C
29 lines
695 B
C
/*
|
|
* Copyright 2012 Freescale Semiconductor, Inc.
|
|
*
|
|
* The code contained herein is licensed under the GNU General Public
|
|
* License. You may obtain a copy of the GNU General Public License
|
|
* Version 2 or later at the following locations:
|
|
*
|
|
* http://www.opensource.org/licenses/gpl-license.html
|
|
* http://www.gnu.org/copyleft/gpl.html
|
|
*/
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/io.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/spinlock.h>
|
|
|
|
DEFINE_SPINLOCK(mxs_lock);
|
|
|
|
int mxs_clk_wait(void __iomem *reg, u8 shift)
|
|
{
|
|
unsigned long timeout = jiffies + msecs_to_jiffies(10);
|
|
|
|
while (readl_relaxed(reg) & (1 << shift))
|
|
if (time_after(jiffies, timeout))
|
|
return -ETIMEDOUT;
|
|
|
|
return 0;
|
|
}
|