linux-kernel - Re: [PATCH v2 0/5] Allwinner SoCs High Speed Timer support

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Date:	Thu, 07 Nov 2013 12:03:51 +0100
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	tglx@...utronix.de
CC:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	sboyd@...eaurora.org, kevin.z.m.zh@...il.com,
	sunny@...winnertech.com, shuge@...winnertech.com,
	zhuzhenhua@...winnertech.com,
	Gregory Clement <gregory.clement@...e-electrons.com>
Subject: Re: [PATCH v2 0/5] Allwinner SoCs High Speed Timer support

On 10/25/2013 03:07 PM, Maxime Ripard wrote:
> Hi everyone,
>
> Here is a few patches adding support for the High Speed Timers running on the
> Allwinner SoCs.
>
> These timers are 64 bits timers running at a much higher speed than the timers
> used for now on these SoCs, since they are no longer wired to the 24MHz
> oscillator, but to the AHB clock.
>
> This HS timers are actually found in all the supported SoCs but the A10.
> However, the A20 and A31 come with 4 of these high speed timers, while the A10s
> and A13 only have two, hence why we introduce two different compatibles.
>
> The A31 is not using these for now, as its timers are asserted in reset by a
> reset controller that first need to gain some support in the kernel first, but
> that's for another patchset.

Hi Maxime,

the patchset is applied in my tree for 3.14.

Fixed a trivial conflict in the arch/arm/mach-sunxi/Kconfig

Thanks !
   -- Daniel

> Changes from v1:
>    - Reported correctly the minimum ticks we can set
>    - No longer use the HS timers as the default timers in the system
>    - Removed the IRQF_DISABLED interrupt flag
>    - Filled the irq clock_event_device field
>    - Changed the cpumask to cpu_possible_mask
>
> Maxime Ripard (5):
>    clocksource: sun4i: Increase a bit the clock event and sources rating
>    clocksource: Add Allwinner SoCs HS timers driver
>    ARM: sun5i: a10s: Add support for the High Speed Timers
>    ARM: sun5i: a13: Add support for the High Speed Timers
>    ARM: sun7i: a20: Add support for the High Speed Timers
>
>   .../bindings/timer/allwinner,sun5i-a13-hstimer.txt |  22 +++
>   arch/arm/boot/dts/sun5i-a10s.dtsi                  |   7 +
>   arch/arm/boot/dts/sun5i-a13.dtsi                   |   7 +
>   arch/arm/boot/dts/sun7i-a20.dtsi                   |  10 ++
>   arch/arm/mach-sunxi/Kconfig                        |   1 +
>   drivers/clocksource/Kconfig                        |   4 +
>   drivers/clocksource/Makefile                       |   1 +
>   drivers/clocksource/sun4i_timer.c                  |   4 +-
>   drivers/clocksource/timer-sun5i.c                  | 192 +++++++++++++++++++++
>   9 files changed, 246 insertions(+), 2 deletions(-)
>   create mode 100644 Documentation/devicetree/bindings/timer/allwinner,sun5i-a13-hstimer.txt
>   create mode 100644 drivers/clocksource/timer-sun5i.c
>


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