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mpc8[56]xx: Put localbus clock in sysinfo and gd

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Currently MPC85xx and MPC86xx boards just calculate the localbus frequency
and print it out, but don't save it.

This changes where its calculated and stored to be more consistent with the
CPU, CCB, TB, and DDR frequencies and the MPC83xx localbus clock.

The localbus frequency is added to sysinfo and calculated when sysinfo is
set up, in cpu/mpc8[56]xx/speed.c, the same as the other frequencies are.

get_clocks() copies the frequency into the global data, as the other
frequencies are, into a new field that is only enabled for MPC85xx and
MPC86xx.

checkcpu() in cpu/mpc8[56]xx/cpu.c will print out the local bus frequency
from sysinfo, like the other frequencies, instead of calculating it on the
spot.

Signed-off-by: Trent Piepho <tpiepho@freescale.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Jon Loeliger <jdl@freescale.com>
This commit is contained in:
Trent Piepho
2008-12-03 15:16:37 -08:00
committed by Andrew Fleming-AFLEMING
parent 9863d6aca1
commit ada591d2a0
7 changed files with 60 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
cpu/mpc85xx/cpu.c
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@@ -77,8 +77,6 @@ struct cpu_type *identify_cpu(u32 ver)
int checkcpu (void)
{
sys_info_t sysinfo;
uint lcrr; /* local bus clock ratio register */
uint clkdiv; /* clock divider portion of lcrr */
uint pvr, svr;
uint fam;
uint ver;
@@ -165,30 +163,11 @@ int checkcpu (void)
break;
}
#if defined(CONFIG_SYS_LBC_LCRR)
lcrr = CONFIG_SYS_LBC_LCRR;
#else
{
volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
lcrr = lbc->lcrr;
}
#endif
clkdiv = lcrr & LCRR_CLKDIV;
if (clkdiv == 2 || clkdiv == 4 || clkdiv == 8) {
#if !defined(CONFIG_MPC8540) && !defined(CONFIG_MPC8541) && \
!defined(CONFIG_MPC8555) && !defined(CONFIG_MPC8560)
/*
* Yes, the entire PQ38 family use the same
* bit-representation for twice the clock divider values.
*/
clkdiv *= 2;
#endif
printf("LBC:%-4s MHz\n",
strmhz(buf1, sysinfo.freqSystemBus / clkdiv));
} else {
printf("LBC: unknown (lcrr: 0x%08x)\n", lcrr);
}
if (sysinfo.freqLocalBus > LCRR_CLKDIV)
printf("LBC:%-4s MHz\n", strmhz(buf1, sysinfo.freqLocalBus));
else
printf("LBC: unknown (LCRR[CLKDIV] = 0x%02lx)\n",
sysinfo.freqLocalBus);
#ifdef CONFIG_CPM2
printf("CPM: %s MHz\n", strmhz(buf1, sysinfo.freqSystemBus));