powerpc: Use feature bit for RTC presence rather than timebase presence

Browse source

All PowerPC CPUs other than the original PPC601 have a timebase
register rather than the "real-time clock" (RTC) register that the
PPC601 (and the original POWER and POWER2 CPUs) had.  Currently
we have a CPU feature bit to indicate the presence of the timebase,
but it makes more sense to use a bit to indicate the unusual
situation rather than the common situation.  This therefore defines
a CPU_FTR_USE_RTC bit in place of the CPU_FTR_USE_TB bit, and
arranges for it to be set on PPC601 systems.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

...

This commit is contained in:

Paul Mackerras 2018-03-20 08:46:11 +11:00 • committed by Michael Ellerman

parent 7928b2cbe5

commit c0d64cf9fe

4 changed files with 47 additions and 55 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

85

arch/powerpc/include/asm/cputable.h

View file

2

arch/powerpc/include/asm/time.h

View file

3

arch/powerpc/kernel/dt_cpu_ftrs.c

View file

12

arch/powerpc/kernel/vdso.c

View file