[U-Boot] [PATCH] i.MX31: document timer precision option
Signed-off-by: Guennadi Liakhovetski lg@denx.de ---
diff -u /dev/null doc/README.imx31 --- /dev/null 2008-08-28 10:21:05.503011301 +0200 +++ doc/README.imx31 2008-08-28 12:15:21.000000000 +0200 @@ -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.
Hi Guennadi,
Guennadi Liakhovetski wrote:
Signed-off-by: Guennadi Liakhovetski lg@denx.de
diff -u /dev/null doc/README.imx31 --- /dev/null 2008-08-28 10:21:05.503011301 +0200 +++ doc/README.imx31 2008-08-28 12:15:21.000000000 +0200 @@ -0,0 +1,13 @@ +i.MX31 specific Configuration Options: +--------------------------------------
+- Timer precision:
CONFIG_MX31_TIMER_HIGH_PRECISIONEnable higher precision timer. The low-precision timer(default) provides approximately 4% error, whereas thehigh-precision timer is about 0.4% accurate. The extraaccuracy is achieved at the cost of higher computationaloverhead, which, in places where time is measured, shouldnot be critical, so, it should be safe to enable thisoption.
I'm not familiar with the maintainance policy of README and doc/*, but is there any reasone this README.imx31 is sitting on the top of tree? Should be marged into $(TOPDIR)/README, or moved to doc/ directory?
Noticed a few minutes ago, so just let you know...
On Thu, 18 Sep 2008, Shinya Kuribayashi wrote:
Hi Guennadi,
Guennadi Liakhovetski wrote:
Signed-off-by: Guennadi Liakhovetski lg@denx.de
diff -u /dev/null doc/README.imx31 --- /dev/null 2008-08-28 10:21:05.503011301 +0200 +++ doc/README.imx31 2008-08-28 12:15:21.000000000 +0200 @@ -0,0 +1,13 @@ +i.MX31 specific Configuration Options: +--------------------------------------
+- Timer precision:
CONFIG_MX31_TIMER_HIGH_PRECISIONEnable higher precision timer. The low-precision timer(default) provides approximately 4% error, whereas thehigh-precision timer is about 0.4% accurate. The extraaccuracy is achieved at the cost of higher computationaloverhead, which, in places where time is measured, shouldnot be critical, so, it should be safe to enable thisoption.I'm not familiar with the maintainance policy of README and doc/*, but is there any reasone this README.imx31 is sitting on the top of tree? Should be marged into $(TOPDIR)/README, or moved to doc/ directory?
Noticed a few minutes ago, so just let you know...
+++ doc/README.imx31 2008-08-28 12:15:21.000000000 +0200
Looks like doc/ to me.
Thanks Guennadi --- Guennadi Liakhovetski, Ph.D.
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office@denx.de
participants (2)
-
Guennadi Liakhovetski -
Shinya Kuribayashi