summaryrefslogtreecommitdiff
path: root/arch/arm/cpu/arm920t/s3c24x0/speed.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/cpu/arm920t/s3c24x0/speed.c')
-rw-r--r--arch/arm/cpu/arm920t/s3c24x0/speed.c30
1 files changed, 25 insertions, 5 deletions
diff --git a/arch/arm/cpu/arm920t/s3c24x0/speed.c b/arch/arm/cpu/arm920t/s3c24x0/speed.c
index b13283a..3ae558d 100644
--- a/arch/arm/cpu/arm920t/s3c24x0/speed.c
+++ b/arch/arm/cpu/arm920t/s3c24x0/speed.c
@@ -54,9 +54,9 @@ static ulong get_PLLCLK(int pllreg)
ulong r, m, p, s;
if (pllreg == MPLL)
- r = readl(&clk_power->MPLLCON);
+ r = readl(&clk_power->mpllcon);
else if (pllreg == UPLL)
- r = readl(&clk_power->UPLLCON);
+ r = readl(&clk_power->upllcon);
else
hang();
@@ -64,7 +64,12 @@ static ulong get_PLLCLK(int pllreg)
p = ((r & 0x003F0) >> 4) + 2;
s = r & 0x3;
+#if defined(CONFIG_S3C2440)
+ if (pllreg == MPLL)
+ return 2 * m * (CONFIG_SYS_CLK_FREQ / (p << s));
+#endif
return (CONFIG_SYS_CLK_FREQ * m) / (p << s);
+
}
/* return FCLK frequency */
@@ -77,8 +82,23 @@ ulong get_FCLK(void)
ulong get_HCLK(void)
{
struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
-
- return (readl(&clk_power->CLKDIVN) & 2) ? get_FCLK() / 2 : get_FCLK();
+#ifdef CONFIG_S3C2440
+ switch (readl(&clk_power->clkdivn) & 0x6) {
+ default:
+ case 0:
+ return get_FCLK();
+ case 2:
+ return get_FCLK() / 2;
+ case 4:
+ return (readl(&clk_power->camdivn) & (1 << 9)) ?
+ get_FCLK() / 8 : get_FCLK() / 4;
+ case 6:
+ return (readl(&clk_power->camdivn) & (1 << 8)) ?
+ get_FCLK() / 6 : get_FCLK() / 3;
+ }
+#else
+ return (readl(&clk_power->clkdivn) & 2) ? get_FCLK() / 2 : get_FCLK();
+#endif
}
/* return PCLK frequency */
@@ -86,7 +106,7 @@ ulong get_PCLK(void)
{
struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
- return (readl(&clk_power->CLKDIVN) & 1) ? get_HCLK() / 2 : get_HCLK();
+ return (readl(&clk_power->clkdivn) & 1) ? get_HCLK() / 2 : get_HCLK();
}
/* return UCLK frequency */