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authorMarkus Klotzbuecher <mk@denx.de>2008-01-09 13:57:10 +0100
committerMarkus Klotzbuecher <mk@denx.de>2008-01-09 13:57:10 +0100
commit6a40ef62c4300e9f606deef0a4618cbc4b514a51 (patch)
treec01bdd0e773d092f13af05567fa92fb9072df9e0 /cpu/mpc85xx/speed.c
parent245a362ad3c0c1b84fccc9fec7b623eb14f6e502 (diff)
parent07eb02687f008721974a2fb54cd7fdc28033ab3c (diff)
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Merge git://www.denx.de/git/u-boot
Conflicts: board/tqm5200/tqm5200.c
Diffstat (limited to 'cpu/mpc85xx/speed.c')
-rw-r--r--cpu/mpc85xx/speed.c34
1 files changed, 29 insertions, 5 deletions
diff --git a/cpu/mpc85xx/speed.c b/cpu/mpc85xx/speed.c
index 12359a2..27de37a 100644
--- a/cpu/mpc85xx/speed.c
+++ b/cpu/mpc85xx/speed.c
@@ -35,8 +35,7 @@ DECLARE_GLOBAL_DATA_PTR;
void get_sys_info (sys_info_t * sysInfo)
{
- volatile immap_t *immap = (immap_t *)CFG_IMMR;
- volatile ccsr_gur_t *gur = &immap->im_gur;
+ volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
uint plat_ratio,e500_ratio,half_freqSystemBus;
plat_ratio = (gur->porpllsr) & 0x0000003e;
@@ -49,6 +48,15 @@ void get_sys_info (sys_info_t * sysInfo)
* overflow for processor speeds above 2GHz */
half_freqSystemBus = sysInfo->freqSystemBus/2;
sysInfo->freqProcessor = e500_ratio*half_freqSystemBus;
+ sysInfo->freqDDRBus = sysInfo->freqSystemBus;
+
+#ifdef CONFIG_DDR_CLK_FREQ
+ {
+ u32 ddr_ratio = ((gur->porpllsr) & 0x00003e00) >> 9;
+ if (ddr_ratio != 0x7)
+ sysInfo->freqDDRBus = ddr_ratio * CONFIG_DDR_CLK_FREQ;
+ }
+#endif
}
@@ -56,12 +64,12 @@ int get_clocks (void)
{
sys_info_t sys_info;
#if defined(CONFIG_CPM2)
- volatile immap_t *immap = (immap_t *) CFG_IMMR;
+ volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CFG_MPC85xx_CPM_ADDR;
uint sccr, dfbrg;
/* set VCO = 4 * BRG */
- immap->im_cpm.im_cpm_intctl.sccr &= 0xfffffffc;
- sccr = immap->im_cpm.im_cpm_intctl.sccr;
+ cpm->im_cpm_intctl.sccr &= 0xfffffffc;
+ sccr = cpm->im_cpm_intctl.sccr;
dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT;
#endif
get_sys_info (&sys_info);
@@ -94,3 +102,19 @@ ulong get_bus_freq (ulong dummy)
return val;
}
+
+/********************************************
+ * get_ddr_freq
+ * return ddr bus freq in Hz
+ *********************************************/
+ulong get_ddr_freq (ulong dummy)
+{
+ ulong val;
+
+ sys_info_t sys_info;
+
+ get_sys_info (&sys_info);
+ val = sys_info.freqDDRBus;
+
+ return val;
+}