On Wed, Apr 30, 2008 at 11:00:42PM -0500, Kumar Gala wrote:
>
> 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?
83xx/85xx, QE, CPM2 and CPM1 (no support).
Probably some more old and new chips.
--
Anton Vorontsov
email: [EMAIL PROTECTED]
irc://irc.freenode.net/bd2
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