tree a1550cacce49b95b4f9fbd6db62ba97eaac7be91
parent 447c031ba4b6b306bb3f77690af06f5d2ad0691b
author Stefan Reinauer <reinauer@chromium.org> 1351488229 +0000
committer Tom Rini <trini@ti.com> 1351894841 -0700

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>