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| author | Guennadi Liakhovetski <lg@denx.de> | 2008-08-28 12:25:11 +0200 |
|---|---|---|
| committer | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2008-09-12 01:23:44 +0200 |
| commit | eb16135df20535b0d19969f50fb5bd17f95e9c25 (patch) | |
| tree | fab2ef38387eceef33a1bb35b5e9a50104c29dbc | |
| parent | 1a6337b01351b82a45b0defa76f08744511c580b (diff) | |
| download | u-boot-imx-eb16135df20535b0d19969f50fb5bd17f95e9c25.zip u-boot-imx-eb16135df20535b0d19969f50fb5bd17f95e9c25.tar.gz u-boot-imx-eb16135df20535b0d19969f50fb5bd17f95e9c25.tar.bz2 | |
i.MX31: document timer precision option
Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
| -rw-r--r-- | README.imx31 | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/README.imx31 b/README.imx31 new file mode 100644 index 0000000..f545f01 --- /dev/null +++ b/README.imx31 @@ -0,0 +1,13 @@ +i.MX31 specific Configuration Options: +-------------------------------------- + +- Timer precision: + CONFIG_MX31_TIMER_HIGH_PRECISION + + Enable higher precision timer. The low-precision timer + (default) provides approximately 4% error, whereas the + high-precision timer is about 0.4% accurate. The extra + accuracy is achieved at the cost of higher computational + overhead, which, in places where time is measured, should + not be critical, so, it should be safe to enable this + option. |