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

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Date:	Wed, 25 Sep 2013 19:41:06 -0300
From:	Emilio López <emilio@...pez.com.ar>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>
CC:	linux-arm-kernel@...ts.infradead.org, kevin.z.m.zh@...il.com,
	sunny@...winnertech.com, shuge@...winnertech.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] Allwinner SoCs High Speed Timer support

Hi Maxime,

El 25/09/13 11:03, Maxime Ripard escribió:
> 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.
>
> Thanks,
> Maxime
>
> Maxime Ripard (5):
>    clocksource: sun4i: Select CLKSRC_MMIO
>    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

I tested these 5 patches on my Cubieboard2 (A20) and it boots and seems 
to work fine, so

Tested-by: Emilio López <emilio@...pez.com.ar>

# uptime && cat /proc/interrupts
  01:45:01 up  1:45,  load average: 0.01, 0.03, 0.04
            CPU0
  33:      56223       GIC  33  serial
  54:          0       GIC  54  sun4i_timer0
  87:        522       GIC  87  eth0
113:      66980       GIC 113  sun5i_timer0
IPI0:          0  CPU wakeup interrupts
IPI1:          0  Timer broadcast interrupts
IPI2:          0  Rescheduling interrupts
IPI3:          0  Function call interrupts
IPI4:          0  Single function call interrupts
IPI5:          0  CPU stop interrupts
Err:          0

Cheers,

Emilio
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