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authorWolfgang Denk <wd@denx.de>2008-02-15 00:14:26 +0100
committerWolfgang Denk <wd@denx.de>2008-02-15 00:14:26 +0100
commit92915741fc7c77175680e036965fb88d7552d743 (patch)
treeea4fd23ae70a1e9f444582cf98529dc21358e612 /cpu
parentd9da0a394a141cf188d646dd89e30c083526ce77 (diff)
parentd38da537943cd36356b9d3d9d9b60533554b81d8 (diff)
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Merge branch 'master' of git://www.denx.de/git/u-boot-avr32
Diffstat (limited to 'cpu')
-rw-r--r--cpu/at32ap/hsdramc.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/cpu/at32ap/hsdramc.c b/cpu/at32ap/hsdramc.c
index a936e03..1fcfe75 100644
--- a/cpu/at32ap/hsdramc.c
+++ b/cpu/at32ap/hsdramc.c
@@ -38,6 +38,10 @@ unsigned long sdram_init(const struct sdram_info *info)
unsigned long bus_hz;
unsigned int i;
+ if (!info->refresh_period)
+ panic("ERROR: SDRAM refresh period == 0. "
+ "Please update the board code\n");
+
tmp = (HSDRAMC1_BF(NC, info->col_bits - 8)
| HSDRAMC1_BF(NR, info->row_bits - 11)
| HSDRAMC1_BF(NB, info->bank_bits - 1)
@@ -113,7 +117,7 @@ unsigned long sdram_init(const struct sdram_info *info)
* 15.6 us is a typical value for a burst of length one
*/
bus_hz = get_sdram_clk_rate();
- hsdramc1_writel(TR, (156 * (bus_hz / 1000)) / 10000);
+ hsdramc1_writel(TR, info->refresh_period);
printf("SDRAM: %u MB at address 0x%08lx\n",
sdram_size >> 20, info->phys_addr);