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From: "chenhui.zhao@freescale.com" <chenhui.zhao@freescale.com>
To: Scott Wood <scottwood@freescale.com>
Cc: "linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"Jason.Jin@freescale.com" <Jason.Jin@freescale.com>
Subject: Re: [4/4] powerpc/85xx: support sleep feature on QorIQ SoCs with RCPM
Date: Thu, 2 Apr 2015 11:18:11 +0000	[thread overview]
Message-ID: <1427973492199.86521@freescale.com> (raw)
In-Reply-To: <20150331023507.GD5667@home.buserror.net>



________________________________________
From: Wood Scott-B07421
Sent: Tuesday, March 31, 2015 10:35
To: Zhao Chenhui-B35336
Cc: linuxppc-dev@lists.ozlabs.org; devicetree@vger.kernel.org; linux-kernel@vger.kernel.org; Jin Zhengxiong-R64188
Subject: Re: [4/4] powerpc/85xx: support sleep feature on QorIQ SoCs with RCPM

On Thu, Mar 26, 2015 at 06:18:15PM +0800, chenhui zhao wrote:
> In sleep mode, the clocks of e500 cores and unused IP blocks is
> turned off. The IP blocks which are allowed to wake up the processor
> are still running.
>
> The sleep mode is equal to the Standby state in Linux. Use the
> command to enter sleep mode:
>   echo standby > /sys/power/state
>
> Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com>
> ---
>  arch/powerpc/Kconfig                   |  3 +-
>  arch/powerpc/platforms/85xx/Kconfig    |  5 +++
>  arch/powerpc/platforms/85xx/Makefile   |  1 +
>  arch/powerpc/platforms/85xx/qoriq_pm.c | 59 ++++++++++++++++++++++++++++++++++
>  arch/powerpc/platforms/86xx/Kconfig    |  1 +
>  5 files changed, 67 insertions(+), 2 deletions(-)
>  create mode 100644 arch/powerpc/platforms/85xx/qoriq_pm.c
>
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 9846c83..162eb53 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -233,7 +233,7 @@ config ARCH_HIBERNATION_POSSIBLE
>  config ARCH_SUSPEND_POSSIBLE
>       def_bool y
>       depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
> -                (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
> +                FSL_SOC_BOOKE || PPC_86xx || PPC_PSERIES \
>                  || 44x || 40x
>
>  config PPC_DCR_NATIVE
> @@ -747,7 +747,6 @@ config FSL_PCI
>
>  config FSL_PMC
>       bool
> -     default y
>       depends on SUSPEND && (PPC_85xx || PPC_86xx)

Get rid of this depends line if you're going to use select instead.

> +static int qoriq_suspend_valid(suspend_state_t state)
> +{
> +     unsigned int pm_modes;
> +
> +     pm_modes = qoriq_pm_ops->get_pm_modes();
> +
> +     if ((state == PM_SUSPEND_STANDBY) && (pm_modes & FSL_PM_SLEEP))
> +             return 1;

Unnecessary parentheses around ==

-Scott

[chenhui] OK

  reply	other threads:[~2015-04-02 11:18 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-26 10:18 [PATCH 1/4] powerpc/cache: add cache flush operation for various e500 Chenhui Zhao
2015-03-26 10:18 ` [PATCH 2/4] powerpc/rcpm: add RCPM driver Chenhui Zhao
2015-03-31  1:30   ` [2/4] " Scott Wood
2015-04-02 10:33     ` chenhui.zhao
2015-04-02 15:50       ` Scott Wood
2015-03-26 10:18 ` [PATCH 3/4] powerpc: support CPU hotplug for e500mc, e5500 and e6500 Chenhui Zhao
2015-03-31  2:07   ` [3/4] " Scott Wood
2015-04-02 11:16     ` chenhui.zhao
2015-04-02 16:03       ` Scott Wood
2015-04-03  2:54         ` chenhui.zhao
2015-03-26 10:18 ` [PATCH 4/4] powerpc/85xx: support sleep feature on QorIQ SoCs with RCPM Chenhui Zhao
2015-03-31  2:35   ` [4/4] " Scott Wood
2015-04-02 11:18     ` chenhui.zhao [this message]
2015-03-31  1:10 ` [1/4] powerpc/cache: add cache flush operation for various e500 Scott Wood
2015-04-02 10:14   ` chenhui.zhao

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