diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/atsam/startup/sdram-config.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/atsam/startup/sdram-config.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/c/src/lib/libbsp/arm/atsam/startup/sdram-config.c b/c/src/lib/libbsp/arm/atsam/startup/sdram-config.c index 51c8f02034..135a2ccebf 100644 --- a/c/src/lib/libbsp/arm/atsam/startup/sdram-config.c +++ b/c/src/lib/libbsp/arm/atsam/startup/sdram-config.c @@ -17,6 +17,11 @@ #include <include/board_memories.h> #if defined ATSAM_SDRAM_IS42S16100E_7BLI + +#if ATSAM_MCK != 123000000 +#error Please check SDRAM settings for this clock frequency. +#endif + const struct BOARD_Sdram_Config BOARD_Sdram_Config = { /* FIXME: a lot of these values should be calculated using CPU frequency */ .sdramc_tr = 1562, @@ -37,8 +42,13 @@ const struct BOARD_Sdram_Config BOARD_Sdram_Config = { }; #elif defined ATSAM_SDRAM_IS42S16320F_7BL + +#if ATSAM_MCK != 123000000 +#error Please check SDRAM settings for this clock frequency. +#endif + #define CLOCK_CYCLES_FROM_NS_MAX(ns) \ - (((ns) * (BOARD_MCK / 1000ul / 1000ul)) / 1000ul) + (((ns) * (ATSAM_MCK / 1000ul / 1000ul)) / 1000ul) #define CLOCK_CYCLES_FROM_NS_MIN(ns) (CLOCK_CYCLES_FROM_NS_MAX(ns) + 1) const struct BOARD_Sdram_Config BOARD_Sdram_Config = { @@ -64,12 +74,6 @@ const struct BOARD_Sdram_Config BOARD_Sdram_Config = { SDRAMC_CFR1_TMRD(CLOCK_CYCLES_FROM_NS_MIN(14)) }; -#if CLOCK_CYCLES_FROM_NS_MIN(67) > 0xF - /* Prevent the fields to be out of range by checking the one with the biggest - * value. */ - #error SDRAM calculation does not work for the selected clock frequency -#endif - #else #error SDRAM not supported. #endif |