[U-Boot] [PATCH][v3] powerpc/t1040qds: Update DDR initialization related settings

York Sun yorksun at freescale.com
Tue Jan 21 23:57:23 CET 2014


On 01/02/2014 09:54 PM, Priyanka Jain wrote:
> Update following DDR related settings for T1040QDS
> -Correct number of chip selects to two as t1040qds supports
>  two Chip selects.
> -Update board_specific_parameters udimm structure with settings
>  derived via calibration.
> -Reduced I2C speed to 50KHz as DDR-SPD does not get reliably
>  read at 400KHz.
> 
> Verified the updated settings to be working fine with dual-ranked
> Micron, MT18KSF51272AZ-1G6 DIMM at data rate 833MT/s, 1333MT/s and
> 1600MT/s.
> 
> 
> Signed-off-by: Poonam Aggrwal <poonam.aggrwal at freescale.com>
> Signed-off-by: Priyanka Jain <Priyanka.Jain at freescale.com>
> ---
>  Changes for v3:
> 	Updated description based on York's comments.
> 
>  Changes for v2:
> 	Reduced I2C speed to 50KHz.
> 

Applied to u-boot-mpc85xx master branch. Awaiting upstream.

York




More information about the U-Boot mailing list