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| author | Paul Walmsley <paul@pwsan.com> | 2009-01-28 12:08:41 -0700 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-02-08 17:50:34 +0000 |
| commit | 85a5f78d2b15a2e73b6486a24b77bb3ab67d5bbc (patch) | |
| tree | 6ea454fb3e0a26ede82ea2c3e0d881758b41c0fc /arch/arm/mach-omap2/clock34xx.h | |
| parent | b32450409847dddf060a468707212d3493df4f63 (diff) | |
| download | kernel_samsung_crespo-85a5f78d2b15a2e73b6486a24b77bb3ab67d5bbc.tar.gz kernel_samsung_crespo-85a5f78d2b15a2e73b6486a24b77bb3ab67d5bbc.tar.bz2 kernel_samsung_crespo-85a5f78d2b15a2e73b6486a24b77bb3ab67d5bbc.zip | |
[ARM] OMAP3 clock: optimize DPLL rate rounding algorithm
The previous DPLL rate rounding algorithm counted the divider (N) down
from the maximum to 1. Since we currently use a broad DPLL rate
tolerance, and lower N values are more power-efficient, we can often
bypass several iterations through the loop by counting N upwards from
1.
Peter de Schrijver <peter.de-schrijver@nokia.com> put up with several
test cycles of this patch - thanks Peter.
linux-omap source commit is 6f6d82bb2f80fa20a841ac3e95a6f44a5a156188.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Peter de Schrijver <peter.de-schrijver@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-omap2/clock34xx.h')
0 files changed, 0 insertions, 0 deletions