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SubjectRe: [PATCH v6 00/10] acpi, clocksource: add GTDT driver and GTDT support in arm_arch_timer
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On Thursday, June 30, 2016 09:29:59 AM Fu Wei wrote:
> Hi Rafael,
>
> On 30 June 2016 at 05:32, Rafael J. Wysocki <rafael@kernel.org> wrote:
> > On Wed, Jun 29, 2016 at 8:15 PM, <fu.wei@linaro.org> wrote:
> >> From: Fu Wei <fu.wei@linaro.org>
> >>
> >> This patchset:
> >> (1)Preparation for adding GTDT support in arm_arch_timer
> >> 1. Move some enums and marcos to header file
> >> 2. Add a new enum for spi type.
> >> 3. Improve printk relevant code
> >>
> >> (2)Introduce ACPI GTDT parser: drivers/acpi/gtdt.c
> >> Parse all kinds of timer in GTDT table of ACPI:arch timer,
> >> memory-mapped timer and SBSA Generic Watchdog timer.
> >> This driver can help to simplify all the relevant timer drivers,
> >> and separate all the ACPI GTDT knowledge from them.
> >>
> >> (3)Simplify ACPI code for arm_arch_timer
> >>
> >> (4)Add GTDT support for ARM memory-mapped timer
> >
> > GTDT is ARM-specific AFAICS.
>
> yes, you are right, it is.
>
> >
> > If so, why do we need that code to reside in drivers/acpi/ ?
>
> Although the GTDT is just for ARM64, but this driver is parsing one
> of ACPI table,
> I think that could be treated as ACPI driver. Do I miss something? :-)

Yes, you are. Nobody except for ARM64 will ever need it.

Thanks,
Rafael

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