tree 4c32f7dd43f422ebf343a2e3be7515c87e9e763e
parent 9935047b2086faa3bf3ccf0b95a76510eb5a160b
author Varun Wadekar <vwadekar@nvidia.com> 1591157318 -0700
committer Varun Wadekar <vwadekar@nvidia.com> 1592533721 -0700

Tegra: memctrl_v2: fixup sequence to resize video memory

The previous sequence used by the driver to program the new memory
aperture settings and clear the non-overlapping memory was faulty.
The sequence locked the non-overlapping regions twice, leading to
faults when trying to clear it.

This patch modifies the sequence to follow these steps:

* move the previous memory region to a new firewall register
* program the new memory aperture settings
* clean the non-overlapping memory

This patch also maps the non-overlapping memory as Device memory to
follow guidance from the arch. team.

Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Change-Id: I7cf6e05b2dd372103dc7229e37b1b3fc269a57ae