USB clocks will be required for fastboot, tftp
related functionalities. Move these clocks to
essential group inorder to have the functionality
working when non-essential clocks are not enabled.
Signed-off-by: R Sricharan <r.sricharan@ti.com>
GPMC clocks are currently getting enabled as a part
non-essential clocks. This will be required during
NOR boot. Move this to essential group to keep the
functionality, when non-essential clocks are not
enabled.
Signed-off-by: R Sricharan <r.sricharan@ti.com>
The nominal opp vdd values as recommended for
ES1.0 silicon is set for mpu, core, mm domains using palmas.
Also used the right sequence to enable the vcores as per
a previous patch from Nishant Menon, which can be dropped now.
http://lists.denx.de/pipermail/u-boot/2012-March/119151.html
Signed-off-by: R Sricharan <r.sricharan@ti.com>
Aligning all the clock related settings like the dpll frequencies, their
respective clock outputs, etc to the ideal values recommended for
OMAP5430 ES1.0 silicon.
Signed-off-by: R Sricharan <r.sricharan@ti.com>
TPS SET0/SET1 register is selected by a GPIO pin on OMAP4460 platforms.
Currently we control this pin with a mux configuration as part of
boot sequence.
Current configuration results in the following voltage waveform:
|---------------| (SET1 default 1.4V)
| --------(programmed voltage)
| <- (This switch happens on mux7,pullup)
vdd_mpu(TPS) -----/ (OPP boot voltage)
--------- (programmed voltage)
vdd_core(TWL6030) -----------------------/ (OPP boot voltage)
Problem 1) |<----- Tx ------>|
timing violation for a duration Tx close to few milliseconds.
Problem 2) voltage of MPU goes beyond spec for even the highest of MPU OPP.
By using GPIO as recommended as standard procedure by TI, the sequence
changes to:
-------- (programmed voltage)
vdd_mpu(TPS) ------------/ (Opp boot voltage)
--------- (programmed voltage)
vdd_core(TWL6030) -------------/ (OPP boot voltage)
NOTE: This does not attempt to address OMAP5 - Aneesh please confirm
Reported-by: Isabelle Gros <i-gros@ti.com>
Reported-by: Jerome Angeloni <j-angeloni@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
OMAP Voltage controller is used to generically talk to
PMICs on OMAP3,4,5 over I2C_SR. Instead of replicating code
in multiple SoC code, introduce a common voltage controller
logic which can be re-used from elsewhere.
With this change, we replace setup_sri2c with omap_vc_init which
has the same functionality, and replace the voltage scale
replication in do_scale_vcore and do_scale_tps62361 with
omap_vc_bypass_send_value. omap_vc_bypass_send_value can also
now be used with any configuration of PMIC.
NOTE: Voltage controller controlling I2C_SR is a write-only data
path, so no register read operation can be implemented.
Reported-by: Isabelle Gros <i-gros@ti.com>
Reported-by: Jerome Angeloni <j-angeloni@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Configuration header(CH) is 512 byte header attached to an OMAP
boot image that will help ROM code to initialize clocks, SDRAM
etc and copy U-Boot directly into SDRAM. CH can help us in
by-passing SPL and directly boot U-boot, hence it's an alternative
for SPL. However, we intend to support both CH and SPL for OMAP4/5.
Initialization done through CH is limited and is not equivalent
to that done by SPL. So U-Boot has to distinguish between the
two cases and handle them accordingly. This patch takes care
of doing this.
Signed-off-by: sricharan <r.sricharan@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Adding the correct configurations required for
dplls, clocks, for omap5 Soc.
Also changes are done to retain some part of the code common
for OMAP4/5 and move only the remaining to the Soc specific
directories.
Signed-off-by: sricharan <r.sricharan@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
