[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
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