ARM: tegra: add GPIO initialization table function

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. Add a feature to the GPIO driver
which executes a GPIO configuration table. Board files will use this to
implement the correct HW initialization procedure.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
ARM: tegra: add function to enable input clamping on tristate

The HW-defined procedure for booting Tegra requires that
CLAMP_INPUTS_WHEN_TRISTATED be enabled before programming the pinmux.
Add a function to the pinmux driver to allow boards to do this.

Signed-off-by: Stephen Warren <swarren@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>
ARM: tegra: clamp inputs on Jetson TK1

The HW-defined procedure for booting Tegra requires that
CLAMP_INPUTS_WHEN_TRISTATED be enabled before programming the pinmux.
Modify the Jetson TK1 board to do this.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
ARM: tegra: update Venice2 pinmux

This re-imports the entire Venice2 pinmux data from the board's master
spreadsheet, and makes use of the new IO clamping GPIO initialization
table features. This makes the board port fully compliant with the
required HW-defined pinmux initialization sequence.

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