[Bug 198123] Console is the wrong color at boot with radeon 6670

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=198123

--- Comment #48 from shibe at tuta.io ---
Turns out, I missed some interesting bits. Here, least significant bit first:

69E4  - - 0 0 - - - 0  0 0 0 0 0 0 0 0  0 0 0 0 0 0 0 0  0 0 0 0 0 0 0 0
69E8  0 0 0 0 0 0 - -  0 0 - - - 0 0 0  0 0 0 0 0 0 0 0  0 0 0 0 0 0 0 0
69EC  0 0 0 0 0 0 - -  - - - - - - 0 0  0 0 0 0 0 0 1 -  0 0 - - - 0 0 0
69F0  0 0 + - 0 0 - -  - 0 0 0 + - 0 0  - - - 0 0 0 + -  0 0 - - - 0 0 0
69FC  0 + 0 0 0 0 0 0  0 0 0 0 0 0 0 0  0 0 0 0 0 0 0 0  0 0 0 0 0 0 0 0
6E68  - 0 0 - 0 - 0 0  0 - - 0 0 - 0 -  0 0 0 - - 0 0 -  0 - 0 0 0 - 0 0

Legend:
0 always 0 in black dumps
1 always 1 in black dumps
+ always 1 in black dumps, usually 0 in grey dumps
- always 0 in black dumps, usually 1 in grey dumps

I've found that 0x69?? addresses are defined as constants with the prefix
"EVERGREEN_DC_LUT_". Why could these registers be messed up?

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