[PATCH v8 6/8] drivers: cpuidle: CPU idle ARM64 driver

[Lorenzo Pieralisi]

On Tue, Sep 23, 2014 at 02:35:14PM +0100, Bartlomiej Zolnierkiewicz wrote:
> 
> Hi,
> 
> On Friday, September 12, 2014 12:26:43 PM Lorenzo Pieralisi wrote:
> > On Fri, Sep 12, 2014 at 11:32:57AM +0100, Catalin Marinas wrote:
> > > Daniel, Lorenzo,
> > > 
> > > On Thu, Sep 11, 2014 at 10:32:48AM +0100, Daniel Lezcano wrote:
> > > > On 09/11/2014 10:57 AM, Lorenzo Pieralisi wrote:
> > > > > There is no ARM code in my series. So to sum it up:
> > > > >
> > > > > a) I send a pull request to Catalin for arm64 patches on top of the branch
> > > > >     you are creating with my patches
> > > >  >
> > > > > b) You take care of merging the CPUidle related patches through your
> > > > >     tree
> > > > >
> > > > > Is the above what you meant ?
> > > > 
> > > > Right, that allows to share a branch across the trees and resolve the 
> > > > dependencies when a patchset is touching different subsystems.
> > > > 
> > > > I realize the dependency is inverted regarding what I proposed 
> > > > initially, so it is up to Catalin to create the branch and I will share 
> > > > it with him.
> > > 
> > > I created the branch below with the arm64 specific patches for cpuidle.
> > > I won't rebase it and it should appear in -next tomorrow.
> > > 
> > > Lorenzo, please send a pull request to Daniel with the additional
> > > patches on top of the arm64 branch. Thanks.
> > 
> > Thank you very much, done. Pull request attached for information.
> > 
> > As Daniel knows, last two patches are still pending, waiting for Samsung
> > acks, and will be dropped if we do not get them in time.
> > 
> > Lorenzo
> > 
> > The following changes since commit 18910ab0d916b1a87016d69efd027714a80521dd:
> > 
> >   arm64: add PSCI CPU_SUSPEND based cpu_suspend support (2014-09-12 10:48:56 +0100)
> > 
> > are available in the git repository at:
> > 
> >   git://linux-arm.org/linux-2.6-lp.git for-upstream/arm-generic-cpuidle
> > 
> > for you to fetch changes up to dda773655f9b97570884c4396ad4d63daf177107:
> > 
> >   drivers: cpuidle: initialize Exynos driver through DT (2014-09-12 11:37:43 +0100)
> > 
> > ----------------------------------------------------------------
> > Bartlomiej Zolnierkiewicz (1):
> >       ARM: dts: add CPU nodes for Exynos4 SoCs
> 
> This patch got broken during merge.  It differs from the version I posted
> on the list by not having the closing "};" which causes a dtb build failure:
> 
> Error: arch/arm/boot/dts/exynos4210-origen.dts:21.1-2 syntax error
> FATAL ERROR: Unable to parse input tree
> make[1]: *** [arch/arm/boot/dts/exynos4210-origen.dtb] Error 1
> make: *** [dtbs] Error 2
> make: *** Waiting for unfinished jobs....
> 
> Please regenarate your branch with the fixed version of the patch
> (you can squash the fix below to the broken patch).

I won't regenerate the branch, Daniel knows that the last two patches
(Samsung changes) were subject to testing and he has an mbox (and the
branch above) that he can use to cherry-pick the patches going through
his tree, as planned.

Daniel, can you squash the fix below into Bart's original patch (that is
part of the mbox I sent you and also part of the pull request) and
stick his tested-by to the Exynos DT CPUidle patch (last in the series)
please ?

I won't be able to regenerate a pull request till Monday, and honestly
there is no need for that.

Thanks a lot,
Lorenzo

> 
> ---
>  arch/arm/boot/dts/exynos4210.dtsi |    1 +
>  1 file changed, 1 insertion(+)
> 
> Index: b/arch/arm/boot/dts/exynos4210.dtsi
> ===================================================================
> --- a/arch/arm/boot/dts/exynos4210.dtsi	2014-09-23 14:14:29.793571708 +0200
> +++ b/arch/arm/boot/dts/exynos4210.dtsi	2014-09-23 14:17:22.029565827 +0200
> @@ -39,6 +39,7 @@
>  			<&clock CLK_OUT_CPU>, <&clock CLK_XXTI>,
>  			<&clock CLK_XUSBXTI>;
>  		#clock-cells = <1>;
> +	};
>  
>  	cpus {
>  		#address-cells = <1>;
> 
> > Lorenzo Pieralisi (4):
> >       drivers: cpuidle: implement DT based idle states infrastructure
> >       drivers: cpuidle: CPU idle ARM64 driver
> >       drivers: cpuidle: initialize big.LITTLE driver through DT
> >       drivers: cpuidle: initialize Exynos driver through DT
> > 
> >  arch/arm/boot/dts/exynos4210.dtsi          |  27 ++++
> >  arch/arm/boot/dts/exynos4212.dtsi          |  17 +++
> >  arch/arm/boot/dts/exynos4412.dtsi          |  29 ++++
> >  arch/arm/boot/dts/exynos5250.dtsi          |  11 ++
> >  arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts |  23 ++++
> >  drivers/cpuidle/Kconfig                    |   8 ++
> >  drivers/cpuidle/Kconfig.arm                |   2 +
> >  drivers/cpuidle/Kconfig.arm64              |  14 ++
> >  drivers/cpuidle/Makefile                   |   5 +
> >  drivers/cpuidle/cpuidle-arm64.c            | 133 ++++++++++++++++++
> >  drivers/cpuidle/cpuidle-big_little.c       |  19 +++
> >  drivers/cpuidle/cpuidle-exynos.c           |  18 ++-
> >  drivers/cpuidle/dt_idle_states.c           | 213 +++++++++++++++++++++++++++++
> >  drivers/cpuidle/dt_idle_states.h           |   7 +
> >  14 files changed, 525 insertions(+), 1 deletion(-)
> >  create mode 100644 drivers/cpuidle/Kconfig.arm64
> >  create mode 100644 drivers/cpuidle/cpuidle-arm64.c
> >  create mode 100644 drivers/cpuidle/dt_idle_states.c
> >  create mode 100644 drivers/cpuidle/dt_idle_states.h
> 
> Best regards,
> --
> Bartlomiej Zolnierkiewicz
> Samsung R&D Institute Poland
> Samsung Electronics
> 
> 
>