[PATCH 1/1] ARM: imx7ulp: add cpuidle support

A.s. Dong aisheng.dong at nxp.com
Tue Aug 29 02:32:40 PDT 2017


> -----Original Message-----
> From: Daniel Lezcano [mailto:daniel.lezcano at linaro.org]
> Sent: Tuesday, August 29, 2017 4:30 PM
> To: A.s. Dong; linux-pm at vger.kernel.org
> Cc: linux-arm-kernel at lists.infradead.org; rjw at rjwysocki.net;
> shawnguo at kernel.org; Anson Huang
> Subject: Re: [PATCH 1/1] ARM: imx7ulp: add cpuidle support
> 
> On 27/08/2017 15:43, Dong Aisheng wrote:
> > i.MX7ULP support 3 levels idle as below:
> > 1. patial stop mode 3;
> > 2. patial stop mode 2;
> > 3. patial stop mode 1.
> >
> > PSTOP1 - Partial Stop with system and bus clock disabled
> > PSTOP2 - Partial Stop with system clock disabled and bus clock enabled
> > PSTOP3 - Partial Stop with system clock enabled and bus clock enabled
> >
> > For PSTOP 1/2 mode, as the system and bus clock will be disabled, the
> > devices working inprogress may not be able to work anymore, driver
> > needs to use pm_qos API to prevent system enter those modes.
> >
> > Cc: "Rafael J. Wysocki" <rjw at rjwysocki.net>
> > Cc: Daniel Lezcano <daniel.lezcano at linaro.org>
> > Cc: Shawn Guo <shawnguo at kernel.org>
> > Signed-off-by: Anson Huang <Anson.Huang at nxp.com>
> > Signed-off-by: Dong Aisheng <aisheng.dong at nxp.com>
> > ---
> 
> Acked-by: Daniel Lezcano <daniel.lezcano at linaro.org>
> 
> Will you consider in the future to move the driver to a DT based
> description and to the cpuidle-arm driver ?
> 

Thanks for the suggestion.
I will investigate it later when I'm free.

Shawn,
This is based on the former imx7ulp arch patch series.
Will notify you once they're merged.

Regards
Dong Aisheng

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