[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>

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 7f1ab802537f..c8def1cf1758 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -967,6 +967,17 @@ menu "CPU Frequency scaling"
 
 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"