The AT91RM9200 has a different bit assignment in PMC MCKR register than it's successors (verified by Atmel's manuals on AT91RM9200 and AT91SAM926). AT91RM9200 supports the additional divider of 3.
Signed-off-by: Guido Classen clagix@gmail.com
--- u-boot-git/arch/arm/include/asm/arch-at91/at91_pmc.h 2010-11-12 18:30:31.000000000 +0100 +++ u-boot-ccm2200/arch/arm/include/asm/arch-at91/at91_pmc.h 2010-11-16 22:00:56.000000000 +0100 @@ -91,10 +91,19 @@ #define AT91_PMC_MCKR_PRES_64 0x00000018 #define AT91_PMC_MCKR_PRES_MASK 0x0000001C
+#ifdef CONFIG_AT91RM9200 +#define AT91_PMC_MCKR_MDIV_1 0x00000000 +#define AT91_PMC_MCKR_MDIV_2 0x00000100 +#define AT91_PMC_MCKR_MDIV_3 0x00000200 +#define AT91_PMC_MCKR_MDIV_4 0x00000300 +#define AT91_PMC_MCKR_MDIV_MASK 0x00000300 +#else #define AT91_PMC_MCKR_MDIV_1 0x00000000 #define AT91_PMC_MCKR_MDIV_2 0x00000100 #define AT91_PMC_MCKR_MDIV_4 0x00000200 #define AT91_PMC_MCKR_MDIV_MASK 0x00000300 +#endif
#define AT91_PMC_MCKR_PLLADIV_1 0x00001000 #define AT91_PMC_MCKR_PLLADIV_2 0x00002000