diff options
Diffstat (limited to 'cpu/at32ap')
| -rw-r--r-- | cpu/at32ap/hsdramc.c | 6 |
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); |