* Patch by Travis Sawyer, 01 Mar 2004:
Ocotea:
- Add IBM PPC440GX Ref Platform support (Ocotea)
Original code by Paul Reynolds <PaulReynolds@lhsolutions.com>
Adapted to U-Boot and 440GX port
440gx_enet.c:
- Add gracious handling of all Ethernet Pin Selections for 440GX
- Add RGMII selection for Cicada CIS8201 Gigabit PHY
ppc440.h:
- Add needed bit definitions
- Fix formatting
* Patch by Carl Riechers, 1 Mar 2004:
Add PPC440GX prbdv0 divider to fix memory clock calculation.
* Patch by Stephan Linz, 27 Feb 2004
- avoid problems for targets without NFS download support
diff --git a/cpu/ppc4xx/speed.c b/cpu/ppc4xx/speed.c
index e776050..7172fe3 100644
--- a/cpu/ppc4xx/speed.c
+++ b/cpu/ppc4xx/speed.c
@@ -247,7 +247,7 @@
unsigned long temp1;
unsigned long lfdiv;
unsigned long m;
-
+ unsigned long prbdv0;
/* Extract configured divisors */
mfsdr( sdr_sdstp0,strp0 );
@@ -263,6 +263,7 @@
sysInfo->pllOpbDiv = temp ? temp : 4;
temp = (strp1 & PLLSYS1_PERCLK_DIV_MASK) >> 24;
sysInfo->pllExtBusDiv = temp ? temp : 4;
+ prbdv0 = (strp0 >> 2) & 0x7;
/* Calculate 'M' based on feedback source */
temp = (strp0 & PLLSYS0_SEL_MASK) >> 27;
@@ -284,7 +285,7 @@
/* Now calculate the individual clocks */
sysInfo->freqVCOMhz = (m * CONFIG_SYS_CLK_FREQ) + (m>>1);
sysInfo->freqProcessor = sysInfo->freqVCOMhz/sysInfo->pllFwdDivA;
- sysInfo->freqPLB = sysInfo->freqVCOMhz/sysInfo->pllFwdDivB;
+ sysInfo->freqPLB = sysInfo->freqVCOMhz/sysInfo->pllFwdDivB/prbdv0;
sysInfo->freqOPB = sysInfo->freqPLB/sysInfo->pllOpbDiv;
sysInfo->freqEPB = sysInfo->freqOPB/sysInfo->pllExtBusDiv;