On 13 January 2016 at 21:43, Arnd Bergmann <arnd@xxxxxxxx> wrote: > On Wednesday 13 January 2016 18:03:24 Thierry Reding wrote: >> 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@xxxxxxxxxx> >> > --- >> > 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@xxxxxxxxxxxxxxxxxxx for visibility. >> >> > > Agreed, it would be better to add 'depends on PM_GENERIC_DOMAINS' > dependencies in the drivers that require it. > The problem with that approach is that if those drivers are cross SoC drivers. In some cases PM isn't needed and it is. Of course I don't have the in depth knowledge about the drivers being used in Tegra which may need PM, perhaps it's not that many? Anyway, to me it seems like ARCH_TEGRA should depend on PM instead. Would that work? Kind regards Uffe -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
