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#
# DSP Bridge Driver Support
#
menuconfig TIDSPBRIDGE
tristate "DSP Bridge driver"
depends on ARCH_OMAP3
select OMAP_MBOX_FWK
select OMAP_IOMMU
help
DSP/BIOS Bridge is designed for platforms that contain a GPP and
one or more attached DSPs. The GPP is considered the master or
"host" processor, and the attached DSPs are processing resources
that can be utilized by applications and drivers running on the GPP.
This driver depends on OMAP Mailbox (OMAP_MBOX_FWK).
config TIDSPBRIDGE_DVFS
bool "Enable Bridge Dynamic Voltage and Frequency Scaling (DVFS)"
depends on TIDSPBRIDGE && OMAP_PM_SRF && CPU_FREQ
help
DVFS allows DSP Bridge to initiate the operating point change to
scale the chip voltage and frequency in order to match the
performance and power consumption to the current processing
requirements.
config TIDSPBRIDGE_MEMPOOL_SIZE
hex "Physical memory pool size (Byte)"
depends on TIDSPBRIDGE
default 0x600000
help
Allocate specified size of memory at booting time to avoid allocation
failure under heavy memory fragmentation after some use time.
config TIDSPBRIDGE_DEBUG
bool "Debug Support"
depends on TIDSPBRIDGE
help
Say Y to enable Bridge debugging capabilities
config TIDSPBRIDGE_RECOVERY
bool "Recovery Support"
depends on TIDSPBRIDGE
default y
help
In case of DSP fatal error, BRIDGE driver will try to
recover itself.
config TIDSPBRIDGE_CACHE_LINE_CHECK
bool "Check buffers to be 128 byte aligned"
depends on TIDSPBRIDGE
help
When the DSP processes data, the DSP cache controller loads 128-Byte
chunks (lines) from SDRAM and writes the data back in 128-Byte chunks.
If a DMM buffer does not start and end on a 128-Byte boundary, the data
preceding the start address (SA) from the 128-Byte boundary to the SA
and the data at addresses trailing the end address (EA) from the EA to
the next 128-Byte boundary will be loaded and written back as well.
This can lead to heap corruption. Say Y, to enforce the check for 128
byte alignment, buffers failing this check will be rejected.
config TIDSPBRIDGE_WDT3
bool "Enable watchdog timer"
depends on TIDSPBRIDGE
help
WTD3 is managed by DSP and once it is enabled, DSP side bridge is in
charge of refreshing the timer before overflow, if the DSP hangs MPU
will caught the interrupt and try to recover DSP.
config TIDSPBRIDGE_WDT_TIMEOUT
int "Watchdog timer timeout (in secs)"
depends on TIDSPBRIDGE && TIDSPBRIDGE_WDT3
default 5
help
Watchdog timer timeout value, after that time if the watchdog timer
counter is not reset the wdt overflow interrupt will be triggered
config TIDSPBRIDGE_NTFY_PWRERR
bool "Notify power errors"
depends on TIDSPBRIDGE
help
Enable notifications to registered clients on the event of power errror
trying to suspend bridge driver. Say Y, to signal this event as a fatal
error, this will require a bridge restart to recover.
config TIDSPBRIDGE_BACKTRACE
bool "Dump backtraces on fatal errors"
depends on TIDSPBRIDGE
help
Enable useful information to backtrace fatal errors. Say Y if you
want to dump information for testing purposes.
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