On Apr 29, 2008, at 2:00 PM, Anton Vorontsov wrote:
GTM stands for General-purpose Timers Module and able to generate
timer{1,2,3,4} interrupts. These timers are used by the drivers that
need time precise interrupts (like for USB transactions scheduling for
the Freescale USB Host controller as found in some QE and CPM chips),
or these timers could be used as wakeup events from the CPU deep-sleep
mode.
Things unimplemented:
1. Cascaded (32 bit) timers (1-2, 3-4).
This is straightforward to implement when needed, two timers should
be marked as "requested" and configured as appropriate.
2. Super-cascaded (64 bit) timers (1-2-3-4).
This is also straightforward to implement when needed, all timers
should be marked as "requested" and configured as appropriate.
Signed-off-by: Anton Vorontsov <[EMAIL PROTECTED]>
---
Documentation/powerpc/booting-without-of.txt | 37 +++-
arch/powerpc/Kconfig | 5 +
arch/powerpc/sysdev/Makefile | 1 +
arch/powerpc/sysdev/fsl_gtm.c | 424 +++++++++++++++++
+++++++++
include/asm-powerpc/fsl_gtm.h | 47 +++
5 files changed, 513 insertions(+), 1 deletions(-)
create mode 100644 arch/powerpc/sysdev/fsl_gtm.c
create mode 100644 include/asm-powerpc/fsl_gtm.h
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 4e40c12..4070a78 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -538,6 +538,11 @@ config FSL_LBC
help
Freescale Localbus support
+config FSL_GTM
+ bool
+ help
+ Freescale General-purpose Timers support
+
what chips actually use this? just QE or 83xx?
- k
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