diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/lpc24xx/startup/start-config-emc-dynamic.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/lpc24xx/startup/start-config-emc-dynamic.c | 37 |
1 files changed, 24 insertions, 13 deletions
diff --git a/c/src/lib/libbsp/arm/lpc24xx/startup/start-config-emc-dynamic.c b/c/src/lib/libbsp/arm/lpc24xx/startup/start-config-emc-dynamic.c index b028f10be3..a67f07c2d1 100644 --- a/c/src/lib/libbsp/arm/lpc24xx/startup/start-config-emc-dynamic.c +++ b/c/src/lib/libbsp/arm/lpc24xx/startup/start-config-emc-dynamic.c @@ -23,6 +23,18 @@ #include <bsp/start-config.h> #include <bsp/lpc24xx.h> +/* + * FIXME: The NXP example code uses different values for the follwing two + * defines. In the NXP example code they depend on the EMCCLK. It is unclear + * how these values are determined. The values from the NXP example code do + * not work. + */ + +/* Use command delayed strategy */ +#define LPC24XX_EMC_DYNAMIC_READCONFIG_DEFAULT 0x1 + +#define LPC24XX_EMCDLYCTL_DEFAULT 0x1112 + BSP_START_DATA_SECTION const lpc24xx_emc_dynamic_config lpc24xx_start_config_emc_dynamic [] = { #if defined(LPC24XX_EMC_MT48LC4M16A2) @@ -31,8 +43,7 @@ BSP_START_DATA_SECTION const lpc24xx_emc_dynamic_config /* 15.6 us */ .refresh = LPC24XX_PS_TO_EMCCLK(15600000, 0) / 16, - /* Use command delayed strategy */ - .readconfig = 1, + .readconfig = LPC24XX_EMC_DYNAMIC_READCONFIG_DEFAULT, /* Precharge command period 20 ns */ .trp = 1, @@ -73,8 +84,7 @@ BSP_START_DATA_SECTION const lpc24xx_emc_dynamic_config /* 15.6 us */ .refresh = LPC24XX_PS_TO_EMCCLK(15600000, 0) / 16, - /* Use command delayed strategy */ - .readconfig = 1, + .readconfig = LPC24XX_EMC_DYNAMIC_READCONFIG_DEFAULT, /* 20ns */ .trp = LPC24XX_PS_TO_EMCCLK(20000, 1), @@ -107,7 +117,9 @@ BSP_START_DATA_SECTION const lpc24xx_emc_dynamic_config .trrd = LPC24XX_PS_TO_EMCCLK(14000, 1), /* 14ns */ - .tmrd = LPC24XX_PS_TO_EMCCLK(14000, 1) + .tmrd = LPC24XX_PS_TO_EMCCLK(14000, 1), + + .emcdlyctl = LPC24XX_EMCDLYCTL_DEFAULT } #elif defined(LPC24XX_EMC_W9825G2JB75I) /* Dynamic Memory 0: Winbond W9825G2JB75I */ @@ -115,8 +127,7 @@ BSP_START_DATA_SECTION const lpc24xx_emc_dynamic_config /* 15.6 us */ .refresh = LPC24XX_PS_TO_EMCCLK(15600000, 0) / 16, - /* Use command delayed strategy */ - .readconfig = 1, + .readconfig = LPC24XX_EMC_DYNAMIC_READCONFIG_DEFAULT, /* 20ns */ .trp = LPC24XX_PS_TO_EMCCLK(20000, 1), @@ -149,12 +160,14 @@ BSP_START_DATA_SECTION const lpc24xx_emc_dynamic_config .trrd = 1, /* (n + 1) clock cycles == 2 * tCK (tRSC)*/ - .tmrd = 1 + .tmrd = 1, + + .emcdlyctl = LPC24XX_EMCDLYCTL_DEFAULT } #elif defined(LPC24XX_EMC_K4S561632E) { .refresh = 35, - .readconfig = 1, + .readconfig = LPC24XX_EMC_DYNAMIC_READCONFIG_DEFAULT, .trp = 2, .tras = 4, .tsrex = 5, @@ -172,8 +185,7 @@ BSP_START_DATA_SECTION const lpc24xx_emc_dynamic_config /* 15.6us */ .refresh = LPC24XX_PS_TO_EMCCLK(15600000, 0) / 16, - /* Use command delayed strategy */ - .readconfig = 1, + .readconfig = LPC24XX_EMC_DYNAMIC_READCONFIG_DEFAULT, /* 20ns */ .trp = LPC24XX_PS_TO_EMCCLK(20000, 1), @@ -208,8 +220,7 @@ BSP_START_DATA_SECTION const lpc24xx_emc_dynamic_config /* (n + 1) clock cycles == 2 * tCK */ .tmrd = 1, - /* FIXME */ - .emcdlyctl = 0x1112 + .emcdlyctl = LPC24XX_EMCDLYCTL_DEFAULT } #endif }; |