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85xx: get_tbclk() speed up and rounding fix

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Speed up get_tbclk() by referencing pre-computed bus clock
frequency value from global data instead of sys_info_t.  Fix
rounding of result to nearest; previously it was rounding
upwards.

Signed-off-by: James Yang <James.Yang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
James Yang 2008-02-08 16:44:53 -06:00 committed by Andrew Fleming-AFLEMING
parent 1ced121600
commit 591933ca6e
1 changed files with 3 additions and 5 deletions
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8
cpu/mpc85xx/cpu.c
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@ -30,6 +30,8 @@
#include <command.h> #include <command.h>
#include <asm/cache.h> #include <asm/cache.h>
DECLARE_GLOBAL_DATA_PTR;
struct cpu_type { struct cpu_type {
char name[15]; char name[15];
u32 soc_ver; u32 soc_ver;
@ -201,11 +203,7 @@ int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
*/ */
unsigned long get_tbclk (void) unsigned long get_tbclk (void)
{ {
return (gd->bus_clk + 4UL)/8UL;
sys_info_t sys_info;
get_sys_info(&sys_info);
return ((sys_info.freqSystemBus + 7L) / 8L);
} }