On Thu, 28 Apr 2011 12:43:31 +0100, Maxim Levitsky <[email protected]>
wrote:
Martin, one more thing, this is my observations regarding clocks I
finished today:
clock = (ref * N / M) >> (P & 0x7)
first line is blob, second nouveau
level0:
P NNMM
0x4008 - memory - 0018e200 00002505 = 1 = 01.0000
80016400 00002505 = 37 / 5 / 2 = 03.7000
0x4020 - shader - 80010000 00000b01 = 11 / 1 / 2 = 05.5000
80020000 00001b02 = 27 / 2 / 4 = 03.3750
0x4028 - core - a0120000 00001b04 = 27 / 4 / 4 = 01.6875
a0020000 00001b04 = 27 / 4 / 4 = 01.6875
0x4030 - unk_05 - a0120000 00000b02 = 11 / 2 / 4 = 01.3750
80020000 00001b04 = 27 / 4 / 4 = 01.6875
level1:
0x4008 - memory - 809ae400 00002505 = 37 / 5 / 4 = 01.8500
80026400 00002505 = 37 / 5 / 4 = 01.8500
0x4020 - shader - 80000000 00000b01 = 11 / 1 / 1 = 11.0000
80010000 00000b01 = 11 / 1 / 2 = 05.5000
0x4028 - core - a0090000 00000b02 = 11 / 2 / 1 = 05.5000
a0010000 00000b02 = 11 / 2 / 1 = 05.5000
0x4030 - unk_05 - a0120000 00000b02 = 11 / 2 / 4 = 01.3750
80010000 00000b02 = 11 / 2 / 2 = 05.5000
level2:
0x4008 - memory - 8059e400 00002505 = 37 / 5 / 2 = 03.7000
80016400 00002505 = 37 / 5 / 2 = 03.7000
0x4020 - shader - 80000000 00000b01 = 11 / 1 / 1 = 11.0000
80000000 00001002 = 16 / 2 / 1 = 08.0000
0x4028 - core - a0090000 00001002 = 16 / 2 / 2 = 04.0000
a0010000 00001002 = 16 / 2 / 2 = 04.0000
0x4030 - unk_05 - a0120000 00000b02 = 11 / 2 / 4 = 01.3750
80010000 00001202 = 18 / 2 / 2 = 06.0000
Clocks are very different and we seems to overclock hard the unk_05 PLL
And shader PLL is underclocked always, so another way to boost performance?
(it didn't seem to affect perfomace much here, but yet...)
Maxim most likely you are tired of hearing this, but the shader PLL in many
cases is disabled(-ish)
Either by nv_wr32(dev, (nv_rd32(dev, 0x4020) & ~0x80000000)), or by the
0xc040 register (don't remember the exact bit)
Whereas for the unk_05 the logic of the blob has been changed in it's recent
versions - i.e. blob v195.xx the numbers(P/M/N) where the same as the nouveau
Cheers
Emil (xexaxo)
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