Tool/software: Linux
HI,
The J6 entry's GPU can do a good job, usually, but we found one board's GPU can not working.the linux kernel log had one line [clock:
dpll_gpu_ck failed transition to 'locked'].So, i got the register about gpu dpll, CM_IDLEST_DPLL_GPU=0x2 instead of 0x1f, so the gpu dpll can not locked.
because of the gpu dpll can not lock, the GPU GCLK = SYS_CLK1 = 20MHZ, but not 425MZH, the GPU render the four pictures about 2 FPS. it is to slow!
what we can do to avoid boards's gpu dpll not lock?