arch/arm/plat-omap/Kconfig v3.0-rc7

Menu: TI OMAP Common Features



"Systems based on omap7xx, omap15xx or omap16xx"


TI OMAP2/3/4

"Systems based on OMAP2, OMAP3 or OMAP4"

OMAP Feature Selections


For debug cards on TI reference boards.


SmartReflex support

Say Y if you want to enable SmartReflex.

SmartReflex can perform continuous dynamic voltage
scaling around the nominal operating point voltage
according to silicon characteristics and operating
conditions. Enabling SmartReflex reduces power

Please note, that by default SmartReflex is only
initialized. To enable the automatic voltage
compensation for vdd mpu  and vdd core from user space,
user must write 1 to
where X is mpu or core for OMAP3.
Optionally autocompensation can be enabled in the kernel
by default during system init via the enable_on_init flag
which an be passed as platform data to the smartreflex driver.


Class 3 mode of Smartreflex Implementation

Say Y to enable Class 3 implementation of Smartreflex

Class 3 implementation of Smartreflex employs continuous hardware
voltage calibration.


Reset unused clocks during boot

Say Y if you want to reset unused clocks during boot.
This option saves power, but assumes all drivers are
using the clock framework. Broken drivers that do not
yet use clock framework may not work with this option.
If you are booting from another operating system, you
probably do not want this option enabled until your
device drivers work properly.


OMAP multiplexing support

Pin multiplexing support for OMAP boards. If your bootloader
sets the multiplexing correctly, say N. Otherwise, or if unsure,
say Y.


Multiplexing debug output

Makes the multiplexing functions print out a lot of debug info.
This is useful if you want to find out the correct values of the
multiplexing registers.


Warn about pins the bootloader didn't set up

Choose Y here to warn whenever driver initialization logic needs
to change the pin multiplexing setup.  When there are no warnings
printed, it's safe to deselect OMAP_MUX for your product.


McBSP support

Say Y here if you want support for the OMAP Multichannel
Buffered Serial Port.


Mailbox framework support

Say Y here if you want to use OMAP Mailbox framework support for
DSP, IVA1.0 and IVA2 in OMAP1/2/3.


Mailbox kfifo default buffer size (bytes)

Specify the default size of mailbox's kfifo buffers (bytes).
This can also be changed at runtime (via the mbox_kfifo_size
module parameter).


Export OMAP IOMMU internals in DebugFS

Select this to see extensive information about
the internal state of OMAP IOMMU in debugfs.

Say N unless you know you need this.


Use mpu timer

Select this option if you want to use the OMAP mpu timer. This
timer provides more intra-tick resolution than the 32KHz timer,
but consumes more power.


Use 32KHz timer

Select this option if you want to enable the OMAP 32KHz timer.
This timer saves power compared to the OMAP_MPU_TIMER, and has
support for no tick during idle. The 32KHz timer provides less
intra-tick resolution than OMAP_MPU_TIMER. The 32KHz timer is
currently only available for OMAP16XX, 24XX, 34XX and OMAP4.


OMAP3 HS/EMU save and restore for L2 AUX control register

Without this option, L2 Auxiliary control register contents are
lost during off-mode entry on HS/EMU devices. This feature
requires support from PPA / boot-loader in HS/EMU devices, which
currently does not exist by default.


Service ID for the support routine to set L2 AUX control

PPA routine service ID for setting L2 auxiliary control register.


Kernel internal timer frequency for 32KHz timer

Kernel internal timer frequency should be a divisor of 32768,
such as 64 or 128.


Use dual-mode timer

Select this option if you want to use OMAP Dual-Mode timers.


Enable wake-up events for serial ports

Select this option if you want to have your system wake up
to data on the serial RX line. This allows you to wake the
system from serial console.