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| author | Markus Klotzbuecher <mk@denx.de> | 2006-03-24 14:35:25 +0100 |
|---|---|---|
| committer | Markus Klotzbücher <mk@pollux.denx.de> | 2006-03-24 14:35:25 +0100 |
| commit | 40b0bafbb282a8fd2d705be0623948ff551bf26a (patch) | |
| tree | e23f1097ef1528e866ac988f6677e8008c539cb0 | |
| parent | ba70d6a4170ebbec5513f01ceae66a200102ba9a (diff) | |
| download | u-boot-imx-40b0bafbb282a8fd2d705be0623948ff551bf26a.zip u-boot-imx-40b0bafbb282a8fd2d705be0623948ff551bf26a.tar.gz u-boot-imx-40b0bafbb282a8fd2d705be0623948ff551bf26a.tar.bz2 | |
Added config options CFG_MONAHANS_RUN_MODE_OSC_RATIO and
CFG_MONAHANS_TURBO_RUN_MODE_RATIO for configuring the Monahans core
frequency.
| -rw-r--r-- | cpu/pxa/start.S | 17 | ||||
| -rw-r--r-- | include/configs/delta.h | 8 |
2 files changed, 22 insertions, 3 deletions
diff --git a/cpu/pxa/start.S b/cpu/pxa/start.S index 9541c9b..ffaa30f 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] diff --git a/include/configs/delta.h b/include/configs/delta.h index eaa4c43..776ee15 100644 --- a/include/configs/delta.h +++ b/include/configs/delta.h @@ -132,7 +132,13 @@ #define CFG_LOAD_ADDR (CFG_DRAM_BASE + 0x8000) /* default load address */ #define CFG_HZ 3250000 /* incrementer freq: 3.25 MHz */ -#define CFG_CPUSPEED 0x161 /* set core clock to 400/200/100 MHz */ + +/* Monahans Core Frequency = + * + */ +#define CFG_MONAHANS_RUN_MODE_OSC_RATIO 16 /* valid values: 8, 16, 24, 31 */ +#define CFG_MONAHANS_TURBO_RUN_MODE_RATIO 1 /* valid values: 1, 2 */ + /* valid baudrates */ #define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 } |