On Sat, 29 Jan 2022 at 02:23, Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx> wrote: > > On 28/01/2022 22:24, Dmitry Baryshkov wrote: > > This would lead to higher frequencies being set on both 'normal' and > > mm snoc clocks, thus (possibly) increasing power consumption. > > > How so ? If I remember correctly, bus clocks are set to max(sum(avg_bw), max(peak_bw)) calculated over all bandwidth paths (nodes). If you merge snoc and snoc_mm, the resulting sum(avg_bw) would be a sum of (older) snoc's and snoc_mm's sums. Thus the bus clocks (both bus and bus_mm) would be set to higher frequencies. > > There are four clocks > > bus > bus_a > bus_mm > bus_a_mm > > The last two clocks > > SNOC performance points are > 0 | 19.2 | XO > 1 | 50 | GPLL0 > 2 | 100 | GPLL0 > 3 | 133.3 | GPLL0 > 4 | 160 | GPLL0 > 5 | 200 | GPLL0 > 6 | 266.6 | GPLL0 > > SNOC_MM performance points are > 0 | 19.2 | XO > 1 | 50 | GPLL0 > 2 | 100 | GPLL0 > 3 | 133.3 | GPLL0 > 4 | 160 | GPLL0 > 5 | 200 | GPLL0 > 6 | 266.6 | GPLL0 > 7 | 320 | GPLL0 > 8 | 400 | GPLL0 > > Its GPLL0 being set, the snoc_mm clocks really just map back to GPLL0 -- With best wishes Dmitry
