Hi, On Wed, 13 Jun 2012 10:06:54 -0700 (PDT) hong zhang <henryzhang62@xxxxxxxxx> wrote: > > 4 bit is supported. > > The hardware does not impose unresolvable limitations, the > > 2.6.32 kernel > > gives high performance. But since that kernel is not > > mainstream, it is > > very hard to find out which patch gives the slowdown. git > > bisect > > is not very useful in that situation. > > SD memory card reading speed is always ok (on another of the > > integrated > > sd host controllers). > > Have you tested receive throughput? Any difference between TX and Rx throughput? > I tested both. No significant difference with 3.x. Greetings Andreas Kemnade
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