In warm reset conditions on OMAP36xx/AM/DM37xx the rom code
incorrectly sets the DPLL4 clock input divider to /6.5 which
is an invalid value unless the input clock is 13MHz. When a JTAG
emulator is attached, a warm reset is necessary after the emulator
gains control of the process. This results in a loss of serial
output due to the invalid DPLL4 settings.
This patch fixes the issue by resetting the DPLL4 clock input
divider to /1 when the input clock is not 13MHz. AM/DM37x TRM
section 3.5.3.3.3.2.1 specifies that the /6.5 setting is only
used when the input clock is 13MHz.
Signed-off-by: Matt Porter <mporter@ti.com>
Adding ehci clock enabling mechanism part of clock framework.
When essential clocks are enabled during init phase usb host
clocks can also be enabled from clock framework.
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Govindraj.R <govindraj.raja@ti.com>
Tested-by: Stefano Babic <sbabic@denx.de>
which is used to provide 120MHz to USB EHCI
This allows EHCI to work on BeagleBoard XM
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
In case of AM3517 and AM3505 (which is OMAP3 varients), IVA2 and
ISP-CAMERA modules have been removed. So add check for cpu_family before
enabling clocks for these modules, else this impacts subsequent
power consumption and system suspend/resume functionality.
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Ranjith Lohithakshan <ranjithl@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
AM/DM37x is another OMAP3 variant, where the GFX clock has been
boosted to 192MHz/200MHz. So fix the GFX_DIV value for this change.
HW Errata: Due to dependency of TV out clock of 54MHz, it is not
possible to configure GFX to 192MHz. So as per HW errats, the
recommended GFX clock is 200MHz (=CORE_CLK/2).
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
This patch configures clocks properly when a 36XX/37XX
processor is detected.
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
The purpose of this patch is to prepare for adding the OMAP4 architecture, which is Cortex A9
Cortex A8 and A9 both belong to the armv7 architecture, hence the name change.
The two architectures are similar enough that substantial code can be shared.
Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
