[U-Boot] [U-Boot, v2, 08/15] powerpc/km8321: define CONFIG_SYS_DDRCDR

[Tom Rini <trini@konsulko.com>]

On Tue, Nov 17, 2015 at 10:53:31AM +0100, Valentin Longchamp wrote:

> On the km8321 boards is CONFIG_SYS_DDRCDR not defined, which leads to
> the DDRCDR not being configured at startup and still containing the
> reset value.
> 
> The required settings for our km8321 hardware designs are different than
> the reset value and must be set with CONFIG_SYS_DDRCDR, that is used
> by mpc83xx's cpu_init_f function at early CPU initialization.
> 
> The important settings are the DDR2 internal voltage level and the
> half-strength "drivers".
> 
> In our case where the DRAM chips are soldered on board and the routing
> for these signals under control, half-strength is sufficient as a few
> measurements done in the lasts have shown. Since all the hardware
> qualification tests have been performed with half strength, the nominal
> strength settings are removed in favor of the default reset half
> strength settings.
> 
> Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>

Applied to u-boot/master, thanks!

-- 
Tom
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