linux-kernel - Re: [PATCH V2] ARM: imx: add cpuidle support for i.mx6ul

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Date:   Mon, 29 Aug 2016 22:41:18 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Anson Huang <Anson.Huang@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        fabio.estevam@....com, linux@...linux.org.uk,
        kernel@...gutronix.de, l.stach@...gutronix.de
Subject: Re: [PATCH V2] ARM: imx: add cpuidle support for i.mx6ul

On Mon, Aug 29, 2016 at 11:41:12PM +0800, Anson Huang wrote:
> This patch enables cpuidle driver for i.MX6UL, it
> reuses i.MX6SX's cpuidle driver, 3 levels of cpuidle
> supported:
> 
> 1. ARM WFI;
> 2. SOC in WAIT mode;
> 3. SOC in WAIT mode + ARM power off.
> 
> As i.MX6UL has cortex-A7 CORE with an internal L2
> cache, so flushing it before powering down ARM platform
> is necessary, flush_cache_all() in last step of cpu_suspend
> has very small overhead, just call it to avoid cache
> type check for different platforms.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>

Applied, thanks.