[U-Boot] [PATCH v2 2/4] Exynos5420: Remove code for enabling read leveling
Simon Glass
sjg at chromium.org
Tue Jun 3 16:33:40 CEST 2014
On 26 May 2014 07:48, Akshay Saraswat <akshay.s at samsung.com> wrote:
> This patch intends to remove all code which enables hardware read
> leveling. All characterization environments may not cope up with
> h/w read leveling enabled, so we must disable this.
> Also, disabling h/w read leveling improves the MIF LVcc value
> (LVcc value is the value at which DDR will fail to work properly).
> Improving LVcc means we have enough voltage margin for MIF.
> When h/w leveling is enabled, we have almost zero volatge margin.
>
> Signed-off-by: Alim Akhtar <alim.akhtar at samsung.com>
> Signed-off-by: Akshay Saraswat <akshay.s at samsung.com>
> Acked-by: Simon Glass <sjg at chromium.org>
Tested on pit
Tested-by: Simon Glass <sjg at chromium.org>
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