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: tegra: use DT bindings for GPIO naming

There are currently many places that define the list of all Tegra GPIOs;
the DT binding header and custom Tegra-specific header file gpio.h. Fix
the redundancy by replacing everything with the DT binding header file.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>

ARM: tegra: import latest Jetson TK1 spreadsheet

This imports v11 of "Jetson TK1 Development Platform Pin Mux" from
https://developer.nvidia.com/embedded/downloads.

The new version defines the mux option for the MIPI pad ctrl selection.
The OWR pin no longer has an entry in the configuration table because
the only mux option it support is OWR, that feature isn't supported, and
hence can't conflict with any other pin. This pin can only usefully be
used as a GPIO.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>

ARM: tegra: add comment re: autogeneration to pinmux headers

Add a comment block to the top of each generated Tegra pinmux header file
indicating that the file was auto-generated, should not be manually
edited, and with a pointer to the tool and command used to generate it.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>

ARM: tegra: import latest Jetson TK1 pinmux

Syseng has revamped the Jetson TK1 pinmux spreadsheet, basing the content
completely on correct configuration for the board/schematic, rather than
the previous version which was based on the bare minimum changes relative
to another reference board.

The new spreadsheet sets TRISTATE for any input-only pins. This only works
correctly if the global CLAMP bit is not set, so the Jetson TK1 board code
has been adjusted accordingly. Apparently syseng have changed their mind
since the previous advice that this needed to be set:-/

This content comes from Jetson_TK1_customer_pinmux.xlsm (v09) downloaded
from https://developer.nvidia.com/hardware-design-and-development.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

ARM: tegra: add PCIe-related pins to the Jetson TK1 pinmux tables

This pinmux tables currently omit any configuration for PCIe clk_req,
wake, and rst pins, which in turn causes intermittent failures in
U-Boot's PCIe support. Import an updated version of the pinmux tables
which rectifies this.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

ARM: tegra: make use of GPIO init table on Jetson TK1

The HW-defined procedure for booting Tegra requires that some pins be
set up as GPIOs immediately at boot in order to avoid glitches on those
pins, when the pinmux is programmed. This patch implements this
procedure for Jetson TK1. For pins which are to be used as GPIOs, the
pinmux mux function need not be programmed, so the pinmux table is also
adjusted.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

ARM: tegra: add Jetson TK1 board

Jetson TK1 is an NVIDIA Tegra124 reference board, which shares much of
its design with Venice2.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>