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author | Andrii Tseglytskyi <andrii.tseglytskyi@ti.com> | 2013-05-20 22:42:08 (GMT) |
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committer | Tom Rini <trini@ti.com> | 2013-06-10 12:43:09 (GMT) |
commit | 4d0df9c1e94f32a9695be352fead3167fb5135c7 (patch) | |
tree | f1295abc801b55014db970ee1727d8ae206bc232 /arch/arm/include/asm/arch-omap5 | |
parent | a662e0c345b4cd9f4c2d51796154ad4a345a72a5 (diff) | |
download | u-boot-4d0df9c1e94f32a9695be352fead3167fb5135c7.tar.xz |
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>
Diffstat (limited to 'arch/arm/include/asm/arch-omap5')
-rw-r--r-- | arch/arm/include/asm/arch-omap5/omap.h | 13 |
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; |