I just edit the zImage in hex, replacing value 1220A0 into 171240, Big endian.
the CPU still runs at 1188000 (0x1220A0) and cannot change the value in /sys/devices/system/cpu/cpu0/scaling_max_freq
Maybe somewhere needs to unlock the freq or not in boot.image or the zImage, or needs to unpack the zImage? Something needs to tweak? I have no any idea...
Or this is a test build, the kerenl's 1188000 just mean when freq not set, use this default freq?