tree c2ce591a1941ccc8417dd1663ba58dde9ba197d0
parent e1b8ec97a49af099f159d144c5525f2b9d56ceab
author Lokesh Vutla <lokeshvutla@ti.com> 1433416355 +0530
committer Tom Rini <trini@konsulko.com> 1434128525 -0400

ARM: DRA7: Add support for virtual mode configuration

In addition to the regular mux configuration, certain pins of DRA7
require to have "virtual mode" also programmed.
This allows for predefined delay characteristics to be used by the SoC
to meet timing characterstics needed for the interface.

Provide easy to use macro to do the same.

For configuring virtual mode, along with normal pad configuration add
the following two steps:
- Select MODESELECT field of each assocaited PAD.
  CTRL_CORE_PAD_XXX[8]:MODESELECT = 1
- DELAYMODE filed should be configured with value given in DATA Manual.
  CTRL_CORE_PAD_XXX[7:4]:DELAYMODE =[0-15] (as given in DATA manual).

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>