[Nouveau] [Bug 99913] [G96] Reclocking fails on voltage

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99913

--- Comment #5 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Huh. Well, this is what's in the vbios:

Voltage table at 0xd0c9. Version 32.
Header:
0x0000d0c9: 20 06 02 04 00 01                               mask = 0x1

2 entries
-- Vid = 0x0, voltage = 890000 <C2><B5>V --
-- GPIO tag 0x4(VID) data (logic 0) --
0x0000d0cf: 59 00 00 00                                    

-- Vid = 0x1, voltage = 1050000 <C2><B5>V --
-- GPIO tag 0x4(VID) data (logic 1) --
0x0000d0d3: 69 01 00 00                                    

-- ID 0x3 Core 169MHz Memory 100MHz Shader 338MHz Vdec 169MHz Dom6 208MHz
Voltage 89[*10mV] Timing 0 Fan 100 PCIe link width 1 --
-- ID 0x5 Core 275MHz Memory 300MHz Shader 550MHz Vdec 275MHz Dom6 277MHz
Voltage 89[*10mV] Timing 16 Fan 100 PCIe link width 16 --
-- ID 0x7 Core 400MHz Memory 300MHz Shader 800MHz Vdec 450MHz Dom6 416MHz
Voltage 89[*10mV] Timing 0 Fan 100 PCIe link width 16 --
-- ID 0xf Core 625MHz Memory 800MHz Shader 1563MHz Vdec 450MHz Dom6 416MHz
Voltage 116[*10mV] Timing 0 Fan 100 PCIe link width 16 --

Note that the 89 voltage is clearly covered by voltage entry 0, while the 116
voltage is not available. It'd be instructional to see what the blob does. If
you have any mmiotrace (even a very old one) for this board, it'd be
interesting to look at.

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