SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

ARM: OMAP4/5: Remove dead code against CONFIG_SYS_ENABLE_PADS_ALL

The commit
f3f98bb0 : "ARM: OMAP4/5: Do not configure non essential pads, clocks, dplls"
removed the config option aimed towards moving that stuff into kernel, which
renders some code unreachable. Remove that code.

Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>

Add GPL-2.0+ SPDX-License-Identifier to source files

Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>

ARM: OMAP4: PANDA: Add rest of the USB module pads to essentials

In commit 1a89a217f5c5ab3645c80c1247e8911a8b5ad491 we moved most of the
required pads and mux data for USB to the essential list so that later
on we could NOT enable anything that wasn't essential unless otherwise
configured. This was however missing a few pandaboard-specific parts
which left for example USB ethernet non-functional.

Tested this on OMAP4430 ES2.2, OMAP4460 ES1.1 PANDA boards.

(Reworded by Tom Rini to be more precise about what the problem was)

Signed-off-by: R Sricharan <r.sricharan@ti.com>
Tested-by: Gary Thomas <gary@mlbassoc.com>
Tested-by: Tom Rini <trini@ti.com>

omap4: panda: disable uart2 pads during boot

If uart2 is enabled during boot, spurious wifi chip transmission will
hang the module and it is impossible to recover from this situation
without hard reset. This will prevent any l4_per domain idle
transitions.

Signed-off-by: Tero Kristo <t-kristo@ti.com>

OMAP4460: TPS Ensure SET1 is selected after voltage configuration

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>

OMAP4: ehci-omap: enable ehci-omap for panda boards

For panda initialise the mux pins for ehci usage and
enable ehci in omap4_panda config file.

Signed-off-by: Govindraj.R <govindraj.raja@ti.com>
Tested-by: Stefano Babic <sbabic@denx.de>

omap4460: fix TPS initialization

TPS power IC is controlled using a GPIO (gpio_wk7).
This GPIO should be maintained at logic 1 always. As
such an internal pull-up on this pin will do the job,
driving the GPIO outuput is not needed. This will avoid
the need of using GPIO library in SPL and also may
save some power.

Signed-off-by: Aneesh V <aneesh@ti.com>

omap5: Add minimal support for omap5430.

This patch adds the minimal support for OMAP5. The platform and machine
specific headers and sources updated for OMAP5430.

OMAP5430 is Texas Instrument's SOC based on ARM Cortex-A15 SMP architecture.
It's a dual core SOC with GIC used for interrupt handling and SCU for cache
coherency.

Also moved some part of code from the basic platform support that can be made
common for OMAP4/5. Rest is kept out seperately. The same approach is followed
for clocks and emif support in the subsequent patches.

Signed-off-by: sricharan <r.sricharan@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

omap4: splitting padconfs into common, 4430 and 4460

Not all padconfs are the same between 4430 and 4460, so instead of
working around this with an if, we should have an specific padconf
structure for both chips (like handling the differences between the LEDs
GPIOs and TPS).

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@linaro.org>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

omap4: fix pad configuration settings for SDP and Panda

omap4: fix pad configuration settings for SDP and Panda

Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Sebastien Jan <s-jan@ti.com>
Signed-off-by: David Anders <x0132446@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

omap4: cleanup pin mux data

- separate mux settings into essential and non essential parts
- essential part is board independent as of now(so move it
to SoC directory). Will help in having single SPL for all
boards.
- Non-essential part(the pins not essential for u-boot to function)
need to be phased out eventually.
- Correct mux data by aligning to the latest settings in x-loader

Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>