diff options
Diffstat (limited to 'cpu/mpc824x')
| -rw-r--r-- | cpu/mpc824x/cpu_init.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/cpu/mpc824x/cpu_init.c b/cpu/mpc824x/cpu_init.c index 08f5c4a..d0c7a3b 100644 --- a/cpu/mpc824x/cpu_init.c +++ b/cpu/mpc824x/cpu_init.c @@ -108,7 +108,7 @@ cpu_init_f (void) CONFIG_READ_BYTE(PCMBCR,val); /* in order not to corrupt data which is being read over the PCI bus - * with the PPC as master, we need to reduce the number of PCMRBs to 1, + * with the PPC as slave, we need to reduce the number of PCMRBs to 1, * 4.11 in the processor user manual * */ @@ -117,6 +117,10 @@ cpu_init_f (void) #else CONFIG_WRITE_BYTE(PCMBCR,(val|0x80)); /* 2 PCMRBs */ CONFIG_WRITE_BYTE(PCMBCR,(val|0x40)); /* 3 PCMRBs */ + /* default, 4 PCMRBs are used, so don't change the + * register is this is _really_ what you want: data + * corruption with no performance gain + */ #endif #endif |