[U-Boot] [U-Boot, RESEND, 01/24] sh4: cache: correct dcache flush to invalidate with write-back

Tom Rini
2016-12-03T23:48:19Z

On Mon, Nov 28, 2016 at 12:15:13AM +0200, Vladimir Zapolskiy wrote:

> In common usecases flush_cache() assumes both cache invalidation and
> write-back to memory, thus in flush_dcache_range() implementation
> change SH4 cache write-back only instruction 'ocbwb' with cache purge
> instruction 'ocbp', according to the User's Manual there should be no
> performance penalty for that.
>
> Note that under circumstances only cache invalidation is expected from
> flush_cache() call, in these occasional cases the current version of
> flush_cache() works, which is a wrapper over invalidate_dcache_range()
> at the moment, this will be fixed in the following change.
>
> Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>

Applied to u-boot/master, thanks!

--
Tom
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