[PATCH v2] at91sam9_ddrsdr: fix register on mdr read and sdram detection for ddr size
Sascha Hauer
s.hauer at pengutronix.de
Mon Feb 4 03:45:08 EST 2013
On Sun, Feb 03, 2013 at 02:49:58PM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> it's currently working by luck
>
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
> ---
> v2:
> 2 bug together make it work
>
Applied, thanks
Sascha
> Best Regards,
> J.
> arch/arm/mach-at91/include/mach/at91sam9_ddrsdr.h | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/mach-at91/include/mach/at91sam9_ddrsdr.h b/arch/arm/mach-at91/include/mach/at91sam9_ddrsdr.h
> index 2614f97..88796a6 100644
> --- a/arch/arm/mach-at91/include/mach/at91sam9_ddrsdr.h
> +++ b/arch/arm/mach-at91/include/mach/at91sam9_ddrsdr.h
> @@ -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;
> --
> 1.7.10.4
>
>
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