[U-Boot-Users] [PATCH] mpc83xx: Correct the burst length for DDR2 with 32 bits

Dave Liu r63238 at freescale.com
Sat Aug 4 07:34:01 CEST 2007


Sorry for that, the patch only fix bottom half.
I will resend the new patch.

Thanks,
Dave

On Wed, 2007-08-01 at 14:01 +0800, Dave Liu wrote:
> The burst length should be 4 for DDR2 with 32 bits bus
> 
> Signed-off-by: Dave Liu<daveliu at freescale.com>
> ---
>  cpu/mpc83xx/spd_sdram.c |    8 ++++++--
>  1 files changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/cpu/mpc83xx/spd_sdram.c b/cpu/mpc83xx/spd_sdram.c
> index 647813f..5e89add 100644
> --- a/cpu/mpc83xx/spd_sdram.c
> +++ b/cpu/mpc83xx/spd_sdram.c
> @@ -730,8 +730,12 @@ long int spd_sdram()
>  		sdram_cfg |= 0x10000000;
>  
>  	/* The DIMM is 32bit width */
> -	if (spd.dataw_lsb == 0x20)
> -		sdram_cfg |= 0x000C0000;
> +	if (spd.dataw_lsb == 0x20) {
> +		if (spd.mem_type == SPD_MEMTYPE_DDR)
> +			sdram_cfg |= 0x000C0000;
> +		if (spd.mem_type == SPD_MEMTYPE_DDR2)
> +			sdram_cfg |= 0x00080000;
> +	}
>  
>  	ddrc_ecc_enable = 0;
>  





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