[PATCH] ARM: EXYNOS4: Enable double linefill in PL310 Prefetch Control Register

Santosh santosh.shilimkar at ti.com
Wed Sep 14 06:13:26 UTC 2011


On Wednesday 14 September 2011 11:38 AM, Kyungmin Park wrote:
> Hi Siarhei,
>
> Interesting feature, and it's not samsung soc issue, so add the arm
> mailing list.
> It checked and the see the read performance improvement from 868MiB/s
> to 981MiB/s with lmbench.
> It's helpful to test other SoC., e.g., OMAP4, STE and so on.
>
> BTW, why do you set the 27-bit? In my PL310 Spec., it's reserved bit
> and should be zero (SBZ).
>
That's because not all PL310 versions double line fill.

Regards
santosh



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