linux-kernel - Re: [PATCH v2 1/7] ARM: imx: add timer stop flag to ARM power off state

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Date:   Fri, 2 Feb 2018 14:16:41 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Stefan Agner <stefan@...er.ch>
Cc:     kernel@...gutronix.de, fabio.estevam@....com, robh+dt@...nel.org,
        mark.rutland@....com, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Anson Huang <anson.huang@....com>
Subject: Re: [PATCH v2 1/7] ARM: imx: add timer stop flag to ARM power off
 state

On Wed, Jan 10, 2018 at 10:04:47PM +0100, Stefan Agner wrote:
> When the CPU is in ARM power off state the ARM architected
> timers are stopped. The flag is already present in the higher
> power WAIT mode.
> 
> This allows to use the ARM generic timer on i.MX 6UL/6ULL SoC.
> Without the flag the kernel freezes when the timer enters the
> first time ARM power off mode.
> 
> Note: The default timer on i.MX6SX is the i.MX GPT timer which is
> not disabled during CPU idle. However, the timer is not affected
> by the CPUIDLE_FLAG_TIMER_STOP flag. The flag only affects CPU
> local timers.
> 
> Cc: Anson Huang <anson.huang@....com>
> Signed-off-by: Stefan Agner <stefan@...er.ch>
> Reviewed-by: Lucas Stach <l.stach@...gutronix.de>

Applied all, thanks.