sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

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

Browse Source
This commit is contained in:
Gregory Nutt 2015-04-08 12:42:54 -06:00
parent 54847a163f
commit 1875e520f9
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
configs/samv71-xult/src/sam_sdram.c
View File

@ -49,6 +49,7 @@
#include <debug.h>
#include <nuttx/arch.h>
#include <arch/board/board.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
*/
putreg32(1562, SAM_SDRAMC_TR);
regval = (32 * (BOARD_MCK_FREQUENCY / 1000)) / 2048 ;
putreg32(regval, SAM_SDRAMC_TR);
regval = getreg32(SAM_SDRAMC_CFR1);
regval |= SDRAMC_CFR1_UNAL;