"Systems based on omap7xx, omap15xx or omap16xx"
"Systems based on OMAP2, OMAP3 or OMAP4"
For debug cards on TI reference boards.
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 consumption. 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 /debug/voltage/vdd_<X>/smartreflex/autocomp, 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.
Say Y to enable Class 3 implementation of Smartreflex Class 3 implementation of Smartreflex employs continuous hardware voltage calibration.
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.
Pin multiplexing support for OMAP boards. If your bootloader sets the multiplexing correctly, say N. Otherwise, or if unsure, say Y.
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.
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.
Say Y here if you want support for the OMAP Multichannel Buffered Serial Port.
Say Y here if you want to use OMAP Mailbox framework support for DSP, IVA1.0 and IVA2 in OMAP1/2/3.
Specify the default size of mailbox's kfifo buffers (bytes). This can also be changed at runtime (via the mbox_kfifo_size module parameter).
Select this to see extensive information about the internal state of OMAP IOMMU in debugfs. Say N unless you know you need this.
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.
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.
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.
PPA routine service ID for setting L2 auxiliary control register.
Kernel internal timer frequency should be a divisor of 32768, such as 64 or 128.
Select this option if you want to use OMAP Dual-Mode timers.
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.