From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: [PATCH] ARM: OMAP2+: Add HAVE_ARM_SCU for AM43XX Date: Tue, 14 Jul 2015 00:03:17 -0700 Message-ID: <20150714070317.GG17550@atomide.com> References: <1436562348-53396-1-git-send-email-d-gerlach@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <1436562348-53396-1-git-send-email-d-gerlach@ti.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Dave Gerlach Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org List-Id: linux-omap@vger.kernel.org * Dave Gerlach [150710 14:08]: > CONFIG_HAVE_ARM_SCU only gets selected if CONFIG_SMP is selected in an OMAP > system, however AM43XX needs this option regardless of CONFIG_SMP and also > for an AM43XX only build as it is important for controlling power in the SoC. > Without this we cannot suspend the CPU for SoC suspend or cpuidle. The > ARM Cortex A9 needs SCU CPU Power Status bits to be set to off mode in order > for the PRCM to transition the MPU to low power modes. > > Signed-off-by: Dave Gerlach > --- > arch/arm/mach-omap2/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig > index ecc04ff..4a023e8 100644 > --- a/arch/arm/mach-omap2/Kconfig > +++ b/arch/arm/mach-omap2/Kconfig > @@ -60,6 +60,7 @@ config SOC_AM43XX > select ARM_GIC > select MACH_OMAP_GENERIC > select MIGHT_HAVE_CACHE_L2X0 > + select HAVE_ARM_SCU > > config SOC_DRA7XX > bool "TI DRA7XX" Applying into omap-for-v4.2/fixes thanks. Tony