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at91sam9_ddrsdr: fix register on mdr read and sdram detection for ddr size 

it's currently working by luck

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD 2013-02-03 14:49:58 +01:00 committed by Sascha Hauer
parent 241acd7f08
commit 6179d67536
1 changed files with 2 additions and 2 deletions
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4
arch/arm/mach-at91/include/mach/at91sam9_ddrsdr.h
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@ -146,7 +146,7 @@ static inline u32 at91_get_ddram_size(void * __iomem base, bool is_nb)
bool is_sdram;
cr = __raw_readl(base + AT91_DDRSDRC_CR);
mdr = __raw_readl(base + AT91_DDRSDRC_CR);
mdr = __raw_readl(base + AT91_DDRSDRC_MDR);
is_sdram = (mdr & AT91_DDRSDRC_MD) <= AT91_DDRSDRC_MD_LOW_POWER_SDR;
@ -158,7 +158,7 @@ static inline u32 at91_get_ddram_size(void * __iomem base, bool is_nb)
size = 1;
/* COL */
size += (cr & AT91_DDRSDRC_NC) + 8;
if (is_sdram)
if (!is_sdram)
size ++;
/* ROW */
size += ((cr & AT91_DDRSDRC_NR) >> 2) + 11;