[Blackfin] arch: Functional power management support: Add CPU and platform voltage scaling support
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 7f1ab80..c8def1c 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -967,6 +967,17 @@
source "drivers/cpufreq/Kconfig"
+config CPU_VOLTAGE
+ bool "CPU Voltage scaling"
+ depends on EXPERIMENTAL
+ depends on CPU_FREQ
+ default n
+ help
+ Say Y here if you want CPU voltage scaling according to the CPU frequency.
+ This option violates the PLL BYPASS recommendation in the Blackfin Processor
+ manuals. There is a theoretical risk that during VDDINT transitions
+ the PLL may unlock.
+
endmenu
source "net/Kconfig"