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authorStefan Reinauer <reinauer@chromium.org>2012-10-29 05:23:49 +0000
committerTom Rini <trini@ti.com>2012-11-02 15:20:41 -0700
commit9a65b8754c57e8640e208b9743272b9c74527e0e (patch)
treea1550cacce49b95b4f9fbd6db62ba97eaac7be91 /drivers/dma/Makefile
parent447c031ba4b6b306bb3f77690af06f5d2ad0691b (diff)
ahci: Optimise AHCI controller reset and start-up
The existing code waits a whole second for the AHCI controller to reset. Instead, let's poll the status register to see if the reset has succeeded and return earlier if possible. This brings down the time for AHCI probing from 1s to 20ms. Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
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