ARM: vexpress/dcscb: handle platform coherency exit/setup and CCI
Add the required code to properly handle race free platform coherency exit
to the DCSCB power down method.
The power_up_setup callback is used to enable the CCI interface for
the cluster being brought up. This must be done in assembly before
the kernel environment is entered.
Thanks to Achin Gupta and Nicolas Pitre for their help and
contributions.
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Pawel Moll <pawel.moll@arm.com>
diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig
index 2f46385..b8bbabe 100644
--- a/arch/arm/mach-vexpress/Kconfig
+++ b/arch/arm/mach-vexpress/Kconfig
@@ -60,6 +60,7 @@
config ARCH_VEXPRESS_DCSCB
bool "Dual Cluster System Control Block (DCSCB) support"
depends on MCPM
+ select ARM_CCI
help
Support for the Dual Cluster System Configuration Block (DCSCB).
This is needed to provide CPU and cluster power management