tegra: clock: Support enabling external clocks

Add a simple function to enable external clocks.

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

Merge branch 'master' of git://git.denx.de/u-boot-tegra

tegra124: clock: Add display clocks and functions

Add functions to provide access to the display clocks on Tegra124 including
setting the clock rate for an EDP display.

Signed-off-by: Simon Glass <

tegra124: clock: Add display clocks and functions

Add functions to provide access to the display clocks on Tegra124 including
setting the clock rate for an EDP display.

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

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tegra: clock: Split the clock source code into a separate function

Create a function which sets the source clock for a peripheral, given
the number of mux bits to adjust. This can then be used more

tegra: clock: Split the clock source code into a separate function

Create a function which sets the source clock for a peripheral, given
the number of mux bits to adjust. This can then be used more generally.
For now, don't export it.

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

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tegra: clock: Add checking for invalid clock IDs

The get_pll() function can do the wrong thing if passed values that are
out of range. Add checks for this and add a function which can return
a 'simp

tegra: clock: Add checking for invalid clock IDs

The get_pll() function can do the wrong thing if passed values that are
out of range. Add checks for this and add a function which can return
a 'simple' PLL. This can be defined by SoCs with their own clocks.

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

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Merge branch 'master' of git://git.denx.de/u-boot-tegra

Conflicts:
README

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

ARM: tegra: support running in non-secure mode

When the CPU is in non-secure (NS) mode (when running U-Boot under a
secure monitor), certain actions cannot be taken, since they would need
to write t

ARM: tegra: support running in non-secure mode

When the CPU is in non-secure (NS) mode (when running U-Boot under a
secure monitor), certain actions cannot be taken, since they would need
to write to secure-only registers. One example is configuring the ARM
architectural timer's CNTFRQ register.

We could support this in one of two ways:
1) Compile twice, once for secure mode (in which case anything goes) and
once for non-secure mode (in which case certain actions are disabled).
This complicates things, since everyone needs to keep track of
different U-Boot binaries for different situations.
2) Detect NS mode at run-time, and optionally skip any impossible actions.
This has the advantage of a single U-Boot binary working in all cases.

(2) is not possible on ARM in general, since there's no architectural way
to detect secure-vs-non-secure. However, there is a Tegra-specific way to
detect this.

This patches uses that feature to detect secure vs. NS mode on Tegra, and
uses that to:

* Skip the ARM arch timer initialization.

* Set/clear an environment variable so that boot scripts can take
different action depending on which mode the CPU is in. This might be
something like:
if CPU is secure:
load secure monitor code into RAM.
boot secure monitor.
secure monitor will restart (a new copy of) U-Boot in NS mode.
else:
execute normal boot process

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

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Merge branch 'master' of git://git.denx.de/u-boot

Merge remote-tracking branch 'u-boot/master' into 'u-boot-arm/master'

ARM: tegra: collect SoC sources into mach-tegra

This commit moves files as follows:

arch/arm/cpu/arm720t/tegra20/* -> arch/arm/mach-tegra/tegra20/*
arch/arm/cpu/arm720t/tegra30/* -> arc

ARM: tegra: collect SoC sources into mach-tegra

This commit moves files as follows:

arch/arm/cpu/arm720t/tegra20/* -> arch/arm/mach-tegra/tegra20/*
arch/arm/cpu/arm720t/tegra30/* -> arch/arm/mach-tegra/tegra30/*
arch/arm/cpu/arm720t/tegra114/* -> arch/arm/mach-tegra/tegra114/*
arch/arm/cpu/arm720t/tegra124* -> arch/arm/mach-tegra/tegra124/*
arch/arm/cpu/arm720t/tegra-common/* -> arch/arm/mach-tegra/*
arch/arm/cpu/armv7/tegra20/* -> arch/arm/mach-tegra/tegra20/*
arch/arm/cpu/armv7/tegra30/* -> arch/arm/mach-tegra/tegra30/*
arch/arm/cpu/armv7/tegra114/* -> arch/arm/mach-tegra/tegra114/*
arch/arm/cpu/armv7/tegra124/* -> arch/arm/mach-tegra/tegra124/*
arch/arm/cpu/armv7/tegra-common/* -> arch/arm/mach-tegra/*
arch/arm/cpu/tegra20-common/* -> arch/arm/mach-tegra/tegra20/*
arch/arm/cpu/tegra30-common/* -> arch/arm/mach-tegra/tegra30/*
arch/arm/cpu/tegra114-common/* -> arch/arm/mach-tegra/tegra114/*
arch/arm/cpu/tegra124-common/* -> arch/arm/mach-tegra/tegra124/*
arch/arm/cpu/tegra-common/* -> arch/arm/mach-tegra/*

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Tested-by: Simon Glass <sjg@chromium.org> [ on nyan-big ]
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Tom Warren <twarren@nvidia.com>

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