tree 7cc9b437e9a31f96433f649406a4d5a3b1d2178d
parent 01a2828fd8e2e3dd16b3a2f9bee6f64a224cb40d
author developer <developer@mediatek.com> 1587454114 +0200
committer Daniel Schwierzeck <daniel.schwierzeck@gmail.com> 1588012173 +0200

mips: mtmips: rewrite lowlevel codes of mt7628

This patch rewrites the mtmips architecture with the following changes:

1. Move MT7628 soc parts into a subfolder.
2. Lock parts of D-Cache as temporary stack.
3. Reimplement DDR initialization in C language.
4. Reimplement DDR calibration in a clear logic.
5. Add full support for auto size detection for DDR1 and DDR2.
6. Use accurate CPU clock depending on the input xtal frequency for timer
   and delay functions.

Note:

print_cpuinfo() has incompatible parts with MT7620 so it's moved into
mt7628 subfolder.

Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>