Pull ARM SoC device-tree changes from Olof Johansson:
 "Unlike the board branch, this keeps having large sets of changes for
  every release, but that's quite expected and is so far working well.

  Most of this is plumbing for various device bindings and new
  platforms, but there's also a bit of cleanup and code removal for
  things that are moved from platform code to DT contents (some OMAP
  clock code in particular).

  There's also a pinctrl driver for tegra here (appropriately acked),
  that's introduced this way to make it more bisectable.

  I'm happy to say that there were no conflicts at all with this branch
  this release, which means that changes are flowing through our tree as
  expected instead of merged through driver maintainers (or at least not
  done with conflicts).

  There are several new boards added, and a couple of SoCs.  In no
  particular order:

   - Rockchip RK3288 SoC support, including DTS for a dev board that
     they have seeded with some community developers.
   - Better support for Hardkernel Exynos4-based ODROID boards.
   - CCF conversions (and dtsi contents) for several Renesas platforms.
   - Gumstix Pepper (TI AM335x) board support
   - TI eval board support for AM437x
   - Allwinner A23 SoC, very similar to existing ones which mostly has
     resulted in DT changes for support.  Also includes support for an
     Ippo tablet with the chipset.
   - Allwinner A31 Hummingbird board support, not to be confused with
     the SolidRun i.MX-based Hummingboard.
   - Tegra30 Apalis board support"

* tag 'dt-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (334 commits)
  ARM: dts: Enable USB host0 (EHCI) on rk3288-evb
  ARM: dts: add rk3288 ehci usb devices
  ARM: dts: Turn on USB host vbus on rk3288-evb
  ARM: tegra: apalis t30: fix device tree compatible node
  ARM: tegra: paz00: Fix some indentation inconsistencies
  ARM: zynq: DT: Clarify Xilinx Zynq platform
  ARM: dts: rockchip: add watchdog node
  ARM: dts: rockchip: remove pinctrl setting from radxarock uart2
  ARM: dts: Add missing pinctrl for uart0/1 for exynos3250
  ARM: dts: Remove duplicate 'interrput-parent' property for exynos3250
  ARM: dts: Add TMU dt node to monitor the temperature for exynos3250
  ARM: dts: Specify MAX77686 pmic interrupt for exynos5250-smdk5250
  ARM: dts: cypress,cyapa trackpad is exynos5250-Snow only
  ARM: dts: max77686 is exynos5250-snow only
  ARM: zynq: DT: Remove DMA from board DTs
  ARM: zynq: DT: Add CAN node
  ARM: EXYNOS: Add exynos5260 PMU compatible string to DT match table
  ARM: dts: Add PMU DT node for exynos5260 SoC
  ARM: EXYNOS: Add support for Exynos5410 PMU
  ARM: dts: Add PMU to exynos5410
  ...

Add DRM/KMS driver bindings documentation.
Describe the required properties for each of the hardware IPs drivers.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Rob Clark <robdclark@gmail.com>

Add the device tree binding documentation for the GK20A GPU used in
Tegra K1 SoCs.

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

The DSI controllers are powered by a (typically 1.2V) regulator. Usually
this is always on, so there was no need to support enabling or disabling
it thus far. But in order not to consume any power when DSI is inactive,
give the driver a chance to enable or disable the supply as needed.

Signed-off-by: Thierry Reding <treding@nvidia.com>

Revert commit 18ebc0f404d5 "drm/tegra: hdmi: Enable VDD earlier for
hotplug/DDC" and instead add a new supply for the +5V pin on the HDMI
connector.

The vdd-supply property refers to the regulator that supplies the
AVDD_HDMI input on Tegra, rather than the +5V HDMI connector pin. This
was never a problem before, because all boards had that pin hooked up to
a regulator that was always on. Starting with Dalmore and continuing
with Venice2, the +5V pin is controllable via a GPIO. For reasons
unknown, the GPIO ended up as the controlling GPIO of the AVDD_HDMI
supply in the Dalmore and Venice2 DTS files. But that's not correct.
Instead, a separate supply must be introduced so that the +5V pin can be
controlled separately from the supplies that feed the HDMI block within
Tegra.

A new hdmi-supply property is introduced that takes the place of the
vdd-supply and vdd-supply is only enabled when HDMI is enabled rather
than all the time.

Signed-off-by: Thierry Reding <treding@nvidia.com>

Add support for eDP functionality found on Tegra124 and later SoCs. Only
fast link training is currently supported.

Signed-off-by: Thierry Reding <treding@nvidia.com>

The head number of a given display controller is fixed in hardware and
required to program outputs appropriately. Relying on the driver probe
order to determine this number will not work, since that could yield a
situation where the second head was probed first and would be assigned
head number 0 instead of 1.

By explicitly specifying the head number in the device tree, it is no
longer necessary to rely on these assumptions. As a fallback, if the
property isn't available, derive the head number from the display
controller node's position in the device tree. That's somewhat more
reliable than the previous default but not a proper solution.

Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

This commit adds support for both DSI outputs found on Tegra. Only very
minimal functionality is implemented, so advanced features like ganged
mode won't work.

Due to the lack of other test hardware, some sections of the driver are
hardcoded to work with Dalmore.

Signed-off-by: Thierry Reding <treding@nvidia.com>

The display controller primary clock was recently renamed to "dc", so
update the example to reflect that.

Signed-off-by: Thierry Reding <treding@nvidia.com>

Use the DRM panel framework to attach a panel to an output. If the panel
attached to a connector supports supports the backlight brightness
accessors, a property will be available to allow the brightness to be
modified from userspace.

Signed-off-by: Thierry Reding <treding@nvidia.com>