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| author | Andrii Tseglytskyi <andrii.tseglytskyi@ti.com> | 2013-05-20 22:42:08 +0000 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-06-10 08:43:09 -0400 |
| commit | 4d0df9c1e94f32a9695be352fead3167fb5135c7 (patch) | |
| tree | f1295abc801b55014db970ee1727d8ae206bc232 /arch/arm/include/asm/arch-omap4/omap.h | |
| parent | a662e0c345b4cd9f4c2d51796154ad4a345a72a5 (diff) | |
| download | u-boot-4d0df9c1e94f32a9695be352fead3167fb5135c7.tar.gz u-boot-4d0df9c1e94f32a9695be352fead3167fb5135c7.tar.xz u-boot-4d0df9c1e94f32a9695be352fead3167fb5135c7.zip | |
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-omap4/omap.h')
| -rw-r--r-- | arch/arm/include/asm/arch-omap4/omap.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-omap4/omap.h b/arch/arm/include/asm/arch-omap4/omap.h index e9a6ffeb83..55a07605b8 100644 --- a/arch/arm/include/asm/arch-omap4/omap.h +++ b/arch/arm/include/asm/arch-omap4/omap.h @@ -143,4 +143,12 @@ struct s32ktimer { #define NON_SECURE_SRAM_END 0x4030E000 /* Not inclusive */ /* base address for indirect vectors (internal boot mode) */ #define SRAM_ROM_VECT_BASE 0x4030D000 + +/* 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) + #endif |