summaryrefslogtreecommitdiff
path: root/cpu
diff options
context:
space:
mode:
authorMarkus Klotzbuecher <mk@denx.de>2006-03-24 14:35:25 +0100
committerMarkus Klotzbücher <mk@pollux.denx.de>2006-03-24 14:35:25 +0100
commit40b0bafbb282a8fd2d705be0623948ff551bf26a (patch)
treee23f1097ef1528e866ac988f6677e8008c539cb0 /cpu
parentba70d6a4170ebbec5513f01ceae66a200102ba9a (diff)
Added config options CFG_MONAHANS_RUN_MODE_OSC_RATIO and
CFG_MONAHANS_TURBO_RUN_MODE_RATIO for configuring the Monahans core frequency.
Diffstat (limited to 'cpu')
-rw-r--r--cpu/pxa/start.S17
1 files changed, 15 insertions, 2 deletions
diff --git a/cpu/pxa/start.S b/cpu/pxa/start.S
index 9541c9b2b9..ffaa30fdc5 100644
--- a/cpu/pxa/start.S
+++ b/cpu/pxa/start.S
@@ -190,6 +190,14 @@ OSTIMER_BASE: .word 0x40a00000
#define OIER 0x1C
/* Clock Manager Registers */
+#ifdef CONFIG_CPU_MONAHANS
+# ifndef CFG_MONAHANS_RUN_MODE_OSC_RATIO
+# error "You have to define CFG_MONAHANS_RUN_MODE_OSC_RATIO!!"
+# endif
+# ifndef CFG_MONAHANS_TURBO_RUN_MODE_RATIO
+# define CFG_MONAHANS_TURBO_RUN_MODE_RATIO 0x1
+# endif
+#else /* ! CONFIG_CPU_MONAHANS */
#ifdef CFG_CPUSPEED
CC_BASE: .word 0x41300000
#define CCCR 0x00
@@ -197,6 +205,7 @@ cpuspeed: .word CFG_CPUSPEED
#else
#error "You have to define CFG_CPUSPEED!!"
#endif
+#endif /* CONFIG_CPU_MONAHANS */
/* takes care the CP15 update has taken place */
.macro CPWAIT reg
@@ -233,9 +242,13 @@ cpu_init_crit:
str r2, [r1]
#endif
-#ifndef CONFIG_CPU_MONAHANS
+ /* set clock speed */
+#ifdef CONFIG_CPU_MONAHANS
+ ldr r0, =ACCR
+ ldr r1, =(((CFG_MONAHANS_TURBO_RUN_MODE_RATIO<<8) & ACCR_XN_MASK) | (CFG_MONAHANS_RUN_MODE_OSC_RATIO & ACCR_XL_MASK))
+ str r1, [r0]
+#else /* ! CONFIG_CPU_MONAHANS */
#ifdef CFG_CPUSPEED
- /* set clock speed tbd@mk: required for monahans? */
ldr r0, CC_BASE
ldr r1, cpuspeed
str r1, [r0, #CCCR]