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[MIPS] Au1xx0 code sets incorrect mips_hpt_frequency 

Alchemy CPU counter ticks at the full CPU clock speed.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Sergei Shtylyov 2006-09-03 22:17:10 +04:00 committed by Ralf Baechle
parent be609f3546
commit 53c1b192ec
1 changed files with 2 additions and 5 deletions
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7
arch/mips/au1000/common/time.c
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@ -231,7 +231,6 @@ wakeup_counter0_set(int ticks)
*/
unsigned long cal_r4koff(void)
{
unsigned long count;
unsigned long cpu_speed;
unsigned long flags;
unsigned long counter;
@ -258,7 +257,7 @@ unsigned long cal_r4koff(void)
#if defined(CONFIG_AU1000_USE32K)
{
unsigned long start, end;
unsigned long start, end, count;
start = au_readl(SYS_RTCREAD);
start += 2;
@ -282,7 +281,6 @@ unsigned long cal_r4koff(void)
#else
cpu_speed = (au_readl(SYS_CPUPLL) & 0x0000003f) *
AU1000_SRC_CLK;
count = cpu_speed / 2;
#endif
}
else {
@ -291,10 +289,9 @@ unsigned long cal_r4koff(void)
* NOTE: some old silicon doesn't allow reading the PLL.
*/
cpu_speed = (au_readl(SYS_CPUPLL) & 0x0000003f) * AU1000_SRC_CLK;
count = cpu_speed / 2;
no_au1xxx_32khz = 1;
}
mips_hpt_frequency = count;
mips_hpt_frequency = cpu_speed;
// Equation: Baudrate = CPU / (SD * 2 * CLKDIV * 16)
set_au1x00_uart_baud_base(cpu_speed / (2 * ((int)(au_readl(SYS_POWERCTRL)&0x03) + 2) * 16));
spin_unlock_irqrestore(&time_lock, flags);