ddr: altera: Fix DRAM end value in protection rule

The hi address bitfield in the protection rule must be set to
the last address in the region which the rule represents. The
behavior is now in-line with code generated by Quartus 15.1 .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Chin Liang See <clsee@altera.com>

diff --git a/drivers/ddr/altera/sdram.c b/drivers/ddr/altera/sdram.c
index 299694217279b1cc9aa51ec3947f7e3c10867ae9..7e4606de28aae01e29c7097fa7123afc8fd09cec 100644 (file)
--- a/drivers/ddr/altera/sdram.c
+++ b/drivers/ddr/altera/sdram.c
@@ -118,7 +118,7 @@ static void sdram_set_rule(struct sdram_prot_rule *prule)
 
        /* Obtain the address bits */
        lo_addr_bits = prule->sdram_start >> 20ULL;
-       hi_addr_bits = prule->sdram_end >> 20ULL;
+       hi_addr_bits = (prule->sdram_end - 1) >> 20ULL;
 
        debug("sdram set rule start %x, %d\n", lo_addr_bits,
              prule->sdram_start);