Is it possible to overclock Hexagon DPS? According to data sheet of Snapdragon S2 line our devices use 256MHz, while QDSP5 is said to run within 256–350 MHz range.
No, see table
Availability in Snapdragon products
Both Hexagon (QDSP6) and pre-Hexagon (QDSP5) cores are used in modern Qualcomm SoCs, QDSP5 mostly in low-end products. Modem QDSPs (often pre-Hexagon) are not shown in the table.
QDSP5 usage:
Snapdragon generation, Chipset (SoC) ID, DSP Generation, DSP Frequency, MHz Process node, nm
S1 MSM7627, MSM7227, MSM7625, MSM7225 QDSP5 320 65
S1 MSM7627A, MSM7227A, MSM7625A, MSM7225A QDSP5 350 45
S2 MSM8655, MSM8255, APQ8055,
MSM7630,
MSM7230 QDSP5
256 45
S4 Play MSM8625, MSM8225 QDSP5 350 45
S200 8110, 8210, 8610, 8112, 8212, 8612, 8225Q, 8625Q QDSP5 384 45 LP
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