Re: [PATCH v4 11/11] ARM: OMAP2+: AM33XX: Hookup AM33XX PM code into OMAP builds

[Tony Lindgren <tony@atomide.com>]

* Dave Gerlach <d-gerlach@ti.com> [140710 19:59]:
> With all the requisite changes in place we can now enable the basic
> PM support for AM33xx. This patch updates the various OMAP files
> to enable suspend-resume on AM33xx.
> 
> Because the suspend resume functionality is different on AM33xx
> than other OMAP platforms due to the need for M3 firmware and an
> IPC channel to be in place, separate PM ops are used instead of
> omap_pm_ops. These are now set using omap2_common_suspend_init
> so the AM33xx can make a decision at runtime to enable suspend based
> on the availabilty of aforementioned requirements.
> 
> Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
> ---
> v3->v4:
> 	Updated for rproc usage now.
> 
>  arch/arm/mach-omap2/Kconfig  |  1 +
>  arch/arm/mach-omap2/Makefile |  2 ++
>  arch/arm/mach-omap2/common.h |  9 +++++++++
>  arch/arm/mach-omap2/io.c     |  1 +
>  arch/arm/mach-omap2/pm.h     |  5 +++++
>  arch/arm/mach-omap2/sram.c   | 10 +++++++++-
>  arch/arm/mach-omap2/sram.h   |  2 ++
>  7 files changed, 29 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
> index 1c1ed73..f8a56e5 100644
> --- a/arch/arm/mach-omap2/Kconfig
> +++ b/arch/arm/mach-omap2/Kconfig
> @@ -59,6 +59,7 @@ config SOC_AM33XX
>  	select ARCH_OMAP2PLUS
>  	select ARCH_HAS_OPP
>  	select ARM_CPU_SUSPEND if PM
> +	select WKUP_M3_RPROC if PM

You should not do a select in Kconfig for a driver,
that will lead into various randconfig build errors
at some point. It's probably best to make the PM code
depend on the WKUP_M3_RPROC driver instead.

Regards,

Tony