X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=Documentation%2Fmips%2Ftime.README;h=a4ce603ed3b35876befd795576e9374f34f0b9b3;hb=14e1d357e4fed9577d349952b71ec7d81aad710c;hp=e1304b6bc48349d518472ce94e37b581ec03d521;hpb=224dc50ece1b40f8cff5ecadd42a6b2691e231de;p=powerpc.git

diff --git a/Documentation/mips/time.README b/Documentation/mips/time.README
index e1304b6bc4..a4ce603ed3 100644
--- a/Documentation/mips/time.README
+++ b/Documentation/mips/time.README
@@ -38,19 +38,14 @@ The new time code provide the following services:
 
   a) Implements functions required by Linux common code:
 	time_init
-	do_gettimeofday
-	do_settimeofday
 
   b) provides an abstraction of RTC and null RTC implementation as default.
 	extern unsigned long (*rtc_get_time)(void);
 	extern int (*rtc_set_time)(unsigned long);
 
-  c) a set of gettimeoffset functions for different CPUs and different
-     needs.
-
-  d) high-level and low-level timer interrupt routines where the timer 
-     interrupt source  may or may not be the CPU timer.  The high-level 
-     routine is dispatched through do_IRQ() while the low-level is 
+  c) high-level and low-level timer interrupt routines where the timer
+     interrupt source  may or may not be the CPU timer.  The high-level
+     routine is dispatched through do_IRQ() while the low-level is
      dispatched in assemably code (usually int-handler.S)
 
 
@@ -73,8 +68,7 @@ the following functions or values:
   c) (optional) board-specific RTC routines.
 
   d) (optional) mips_hpt_frequency - It must be definied if the board
-     is using CPU counter for timer interrupt or it is using fixed rate
-     gettimeoffset().
+     is using CPU counter for timer interrupt.
 
 
 PORTING GUIDE
@@ -89,16 +83,6 @@ Step 1: decide how you like to implement the time services.
      If the answer is no, you need a timer to provide the timer interrupt
      at 100 HZ speed.
 
-     You cannot use the fast gettimeoffset functions, i.e.,
-
-	unsigned long fixed_rate_gettimeoffset(void);
-	unsigned long calibrate_div32_gettimeoffset(void);
-	unsigned long calibrate_div64_gettimeoffset(void);
-
-    You can use null_gettimeoffset() will gives the same time resolution as
-    jiffy.  Or you can implement your own gettimeoffset (probably based on 
-    some ad hoc hardware on your machine.)
-
   c) The following sub steps assume your CPU has counter register.
      Do you plan to use the CPU counter register as the timer interrupt
      or use an exnternal timer?
@@ -123,8 +107,8 @@ Step 3: implement rtc routines, board_time_init() and plat_timer_setup()
   board_time_init() -
   	a) (optional) set up RTC routines,
         b) (optional) calibrate and set the mips_hpt_frequency
- 	    (only needed if you intended to use fixed_rate_gettimeoffset
- 	     or use cpu counter as timer interrupt source)
+ 	    (only needed if you intended to use cpu counter as timer interrupt
+ 	     source)
 
   plat_timer_setup() -
  	a) (optional) over-write any choices made above by time_init().
@@ -154,8 +138,8 @@ for some of the functions in time.c.
 For example, you may define your own timer interrupt routine, which does
 some of its own processing and then calls timer_interrupt().
 
-You can also over-ride any of the built-in functions (gettimeoffset,
-RTC routines and/or timer interrupt routine).
+You can also over-ride any of the built-in functions (RTC routines
+and/or timer interrupt routine).
 
 
 PORTING NOTES FOR SMP
@@ -187,10 +171,3 @@ You need to decide on your timer interrupt sources.
 
 	You can also do the low-level version of those interrupt routines,
 	following similar dispatching routes described above.
-
-Note about do_gettimeoffset():
-
-  It is very likely the CPU counter registers are not sync'ed up in a SMP box.
-  Therefore you cannot really use the many of the existing routines that
-  are based on CPU counter.  You should wirte your own gettimeoffset rouinte
-  if you want intra-jiffy resolution.