#From 21.150W to 15.950W, the easy steps:


#PPCI magic - 21.150W - 19.200W - second write almost does nothing - less that 0.050W difference
[0] 7326.260044 MMIO32 W 0x088150 0x6000fe10 PPCI+0x150 <= 0x6000fe10 (current: 0x6000ff10 result: 0x6000fe10)
[0] 7326.260496 MMIO32 W 0x08814c 0x8b00001b PPCI+0x14c <= 0x8b00001b (current: 0x0300001b result: 0x8b00001b)

#Disable GPIO ports - 19.200W - 18.750W
[0] 7319.451272 MMIO32 W 0x00e104 0x02266000 PNVIO.GPIO_0 <= { 0 = { 0 } | 1 = { 0 } | 2 = { 0 } | 3 = { WR_EN | RD_VAL } | 4 = { WR_EN | RD_VAL } | 5 = { WR_EN } | 6 = { WR_EN } | 7 = { 0 } }
# (current: 0x07766000 result: 0x02266000)

# enable everything in PMC.ENABLE - VPE bit decreases power usage - 18.750W - 17.300W
[0] 1226.455757 MMIO32 W 0x000200 0xffffffff PMC.ENABLE <= everything (current: 0xc0110111 result: 0xdff3d113)

# some power magic - both writes nessesary, second one won't work without first one - 17.300W - 16.950W
[0] 1226.458120 MMIO32 W 0x001098 0x21ca003c PBUS.DEBUG_6 <= 0x21ca003c (current: 0x21ca0004 result: 0x21ca003c)
[0] 1226.458299 MMIO32 W 0x001588 0x00000001 PBUS+0x588 <= 0x1 (current: 0x00000000 result: 0x00000001)

# disable VC2 xtensa clock - blob instead sets it to lower clock, then does some magic on VP2,PCRYPT,etc - 16.950W - 16.350W
# that probaly puts it in idle mode - these are boot values minus VC2
[0] 1226.471062 MMIO32 W 0x00c040 0x2ee01233 PCONTROL+0x40 (current: 0x2ee01b33 result: 0x2ee01233)

# DAC optimizations - all writes seems to matter - 16.350W - 16.050W
[0] 1226.425262 MMIO32 W 0x61a010 0x80000002 PDISPLAY.DAC_REGS[0].CLK_CTRL1 <= { CONNECTED = 0 | 0x80000002 } (current: 0x00000001 result: 0x80000002)
[0] 1226.425394 MMIO32 W 0x61a004 0xd0150000 PDISPLAY.DAC_REGS[0].DPMS_CTRL <= { PENDING | 0x50150000 } (current: 0x10550000 result: 0x10150000)
[0] 1226.425610 MMIO32 W 0x61a810 0x00000003 PDISPLAY.DAC_REGS[0x1].CLK_CTRL1 <= { CONNECTED = 0 | 0x3 } (current: 0x00000001 result: 0x00000003)
[0] 1226.425717 MMIO32 W 0x61a804 0xd0150000 PDISPLAY.DAC_REGS[0x1].DPMS_CTRL <= { PENDING | 0x50150000 } (current: 0x10550000 result: 0x10150000)

# PFB magic - some dram optimization ??? - 16.050W - 15.950W
[0] 1226.423318 MMIO32 W 0x100000 0x0000c042 PFB+0 <= 0xc042 (current: 0x00f00002 result: 0x0000c042)
[0] 1226.423388 MMIO32 W 0x100004 0x0000c042 PFB+0x4 <= 0xc042 (current: 0x00f00002 result: 0x0000c042)
[0] 1226.423457 MMIO32 W 0x100008 0x0000c042 PFB+0x8 <= 0xc042 (current: 0x00f00002 result: 0x0000c042)
[0] 1226.423527 MMIO32 W 0x100b78 0x0000c042 PFB+0xb78 <= 0xc042 (current: 0x00f00002 result: 0x0000c042)
[0] 1226.423596 MMIO32 W 0x100c0c 0x0000c042 PFB+0xc0c <= 0xc042 (current: 0x00f00002 result: 0x0000c042)
[0] 1226.423735 MMIO32 W 0x100d04 0x0000c042 PFB+0xd04 <= 0xc042 (current: 0x00f00002 result: 0x0000c042)
[0] 1226.423804 MMIO32 W 0x100e0c 0x0000c042 PFB+0xe0c <= 0xc042 (current: 0x00f00002 result: 0x0000c042)

#fix CTXCTL_FLAGS_0 register - bonus for unpatched nouveau driver
[0] 0000.000000 MMIO32 W 0x400824 0x00000000 PGRAPH.CTXCTL_FLAGS_0 <= 0 (current: 0x00004001, result=0x00000000)