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SAMV71-XULT: Update SDRAM refresh rate based on latest softpack

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Gregory Nutt
2015-04-08 12:42:54 -06:00
parent 68a97a53ac
commit 02cc6a54a3
1 changed files with 3 additions and 1 deletions
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configs/samv71-xult/src/sam_sdram.c
+3 -1
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@@ -49,6 +49,7 @@
#include <debug.h> #include <debug.h>
#include <nuttx/arch.h> #include <nuttx/arch.h>
#include <arch/board/board.h>
#include "up_arch.h" #include "up_arch.h"
@@ -300,7 +301,8 @@ void sam_sdram_config(void)
* For IS42S16100E, 2048 refresh cycle every 32ms, every 15.625 usec * For IS42S16100E, 2048 refresh cycle every 32ms, every 15.625 usec
*/ */
putreg32(1562, SAM_SDRAMC_TR); regval = (32 * (BOARD_MCK_FREQUENCY / 1000)) / 2048 ;
putreg32(regval, SAM_SDRAMC_TR);
regval = getreg32(SAM_SDRAMC_CFR1); regval = getreg32(SAM_SDRAMC_CFR1);
regval |= SDRAMC_CFR1_UNAL; regval |= SDRAMC_CFR1_UNAL;