[OpenWrt-Devel] [PATCH 6/7] ramips: improve mt7621 spi flash read speed

[Felix Fietkau]

On 2015-09-22 15:26, Michael Lee wrote:
> From: michael lee <igvtee at gmail.com>
> 
> only support spi flash command (half duplex).
> no need chunk io patch. done by driver.
> 
> test results on mt7621. use dd read bs=512 with 32128 records
> old driver : 30.52s
> new driver : 34.31s
> new driver + no chunk io : 16.65s
> new driver + no chunk io + fast read clock from 10Mhz to 50Mhz : 5.00s
Where does the performance gain without the clock change come from?

- Felix
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