linux-kernel - Re: [PATCH V4 16/16] ARM64: tegra: select PM_GENERIC

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Date:	Wed, 13 Jan 2016 18:03:24 +0100
From:	Thierry Reding <thierry.reding@...il.com>
To:	Jon Hunter <jonathanh@...dia.com>
Cc:	Philipp Zabel <p.zabel@...gutronix.de>,
	Stephen Warren <swarren@...dotorg.org>,
	Alexandre Courbot <gnurou@...il.com>,
	Rafael Wysocki <rjw@...ysocki.net>,
	Kevin Hilman <khilman@...nel.org>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Vince Hsu <vinceh@...dia.com>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH V4 16/16] ARM64: tegra: select PM_GENERIC_DOMAINS

On Fri, Dec 04, 2015 at 02:57:17PM +0000, Jon Hunter wrote:
> Enable PM_GENERIC_DOMAINS for tegra 64-bit devices. To ensure that devices
> dependent upon a particular power-domain are only probed when that power
> domain has been powered up, requires that PM is made mandatory for tegra
> 64-bit devices and so select this option for tegra as well.
> 
> Signed-off-by: Jon Hunter <jonathanh@...dia.com>
> ---
>  arch/arm64/Kconfig.platforms | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
> index 9806324fa215..e0b5bd0aff0f 100644
> --- a/arch/arm64/Kconfig.platforms
> +++ b/arch/arm64/Kconfig.platforms
> @@ -93,6 +93,8 @@ config ARCH_TEGRA
>  	select GENERIC_CLOCKEVENTS
>  	select HAVE_CLK
>  	select PINCTRL
> +	select PM
> +	select PM_GENERIC_DOMAINS
>  	select RESET_CONTROLLER
>  	help
>  	  This enables support for the NVIDIA Tegra SoC family.

This has potential consequences for multi-platform builds, doesn't it?
All of a sudden any combination of builds that includes Tegra won't be
possible to build without PM support.

Adding linux-arm-kernel@...ts.infradead.org for visibility.

Thierry

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