OMAP3+: introduce generic ABB support

Adaptive Body Biasing (ABB) modulates transistor bias voltages
dynamically in order to optimize switching speed versus leakage.
Adaptive Body-Bias ldos are present for some voltage domains
starting with OMAP3630. There are three modes of operation:

* Bypass - the default, it just follows the vdd voltage
* Foward Body-Bias - applies voltage bias to increase transistor
  performance at the cost of power.  Used to operate safely at high
  OPPs.
* Reverse Body-Bias - applies voltage bias to decrease leakage and
  save power.  Used to save power at lower OPPs.

Signed-off-by: Andrii Tseglytskyi <andrii.tseglytskyi@ti.com>
Acked-by: Nishanth Menon <nm@ti.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-omap5/omap.h b/arch/arm/include/asm/arch-omap5/omap.h
index 4f43a90..1c1a64b 100644
--- a/arch/arm/include/asm/arch-omap5/omap.h
+++ b/arch/arm/include/asm/arch-omap5/omap.h
@@ -215,6 +215,19 @@ struct s32ktimer {
 #define SRCODE_OVERRIDE_SEL_XS_SHIFT	0
 #define SRCODE_OVERRIDE_SEL_XS_MASK	(1 << 0)
 
+/* ABB settings */
+#define OMAP_ABB_SETTLING_TIME		50
+#define OMAP_ABB_CLOCK_CYCLES		16
+
+/* ABB tranxdone mask */
+#define OMAP_ABB_MPU_TXDONE_MASK		(0x1 << 7)
+
+/* ABB efuse masks */
+#define OMAP5_ABB_FUSE_VSET_MASK		(0x1F << 24)
+#define OMAP5_ABB_FUSE_ENABLE_MASK		(0x1 << 29)
+#define OMAP5_ABB_LDOVBBMPU_MUX_CTRL_MASK	(0x1 << 10)
+#define OMAP5_ABB_LDOVBBMPU_VSET_OUT_MASK	(0x1f << 0)
+
 #ifndef __ASSEMBLY__
 struct srcomp_params {
 	s8 divide_factor;