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ARM: S5PV310: Add FOUT APLL get rate function 

FOUT APLL clock is used as a source of ARM core clock. So we need that the
clock source can be changed dynamically by using CPUFREQ driver. This patch
can give correct frequency when calling clk_get_rate() function.

Signed-off-by: Jaecheol Lee <jc.lee@samsung.com>
Signed-off-by: Sangwook Ju <sw.ju@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Jaecheol Lee 2010-12-23 14:25:31 +09:00 committed by Kukjin Kim
parent bf5ce054f5
commit 877d1b571d
1 changed files with 15 additions and 1 deletions
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16
arch/arm/mach-s5pv310/clock.c
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@ -990,6 +990,17 @@ static struct clksrc_clk *sysclks[] = {
&clk_dout_mmc4,
};
static int xtal_rate;
static unsigned long s5pv310_fout_apll_get_rate(struct clk *clk)
{
return s5p_get_pll45xx(xtal_rate, __raw_readl(S5P_APLL_CON0), pll_4508);
}
static struct clk_ops s5pv310_fout_apll_ops = {
.get_rate = s5pv310_fout_apll_get_rate,
};
void __init_or_cpufreq s5pv310_setup_clocks(void)
{
struct clk *xtal_clk;
@ -1013,6 +1024,9 @@ void __init_or_cpufreq s5pv310_setup_clocks(void)
BUG_ON(IS_ERR(xtal_clk));
xtal = clk_get_rate(xtal_clk);
xtal_rate = xtal;
clk_put(xtal_clk);
printk(KERN_DEBUG "%s: xtal is %ld\n", __func__, xtal);
@ -1026,7 +1040,7 @@ void __init_or_cpufreq s5pv310_setup_clocks(void)
vpll = s5p_get_pll46xx(vpllsrc, __raw_readl(S5P_VPLL_CON0),
__raw_readl(S5P_VPLL_CON1), pll_4650);
clk_fout_apll.rate = apll;
clk_fout_apll.ops = &s5pv310_fout_apll_ops;
clk_fout_mpll.rate = mpll;
clk_fout_epll.rate = epll;
clk_fout_vpll.rate = vpll;