Since this set of drivers suports four Tegra SoC generations, lets name it
just 'tegra'.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>

Existing Tegra30 DSI configuration is fully compatible with Tegra20.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

Use DSI message flag to set correct speed mode for message transfer.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

Switch from PANEL_UCLASS to VIDEO_BRIDGE_UCLASS since now
Tegra DC driver has bridge support.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

Establish the backlight as a DC display controller child.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

Implement child binding helper within DC bind to support DC PWM backlight
feature.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

Video operations are not required by the Tegra Display Controller
and should therefore be removed.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

If device uses native Tegra DSI or HDMI, DC clock MUST use the same
parent as DSI/HDMI clock uses. Hence remove need in device tree
configuration and satisfy this condition by default.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

Use OF graph as a main bridge/panel source, preserving
backwards compatibility with phandle implementation.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

Rework existing DC driver configuration to support bridges (both external
and internal DSI and HDMI controllers) and align video devices chain logic
with Linux implementation. Additionally, this should improve communication
between DC and internal DSI/HDMI controllers.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>