2015-02-17, 22:37
avoid_pwm_pll=1 only impact core_freq, h264_freq, v3d_freq and isp_freq
For what I understand, over clocking core_freq without avoid_pwm_pll=1 will also over clock h264_freq, v3d_freq, isp_freq because they share a pll, but not ARM SDRAM and GPU
The point is that over clocking h264_freq, v3d_freq and isp_freq is at best useless because it won't have any effect on the GUI and the default frequency is enough to decode video files without trouble.
By the way, my settings are useless too, it was just to see what I can get from my Pi2, but in practice, I don't really see a difference with a 'softer' over clock or no over clock at all (just using Confluence skin, over clock probably help with heavier skins)
For what I understand, over clocking core_freq without avoid_pwm_pll=1 will also over clock h264_freq, v3d_freq, isp_freq because they share a pll, but not ARM SDRAM and GPU
Quote:The GPU core, H.264, V3D and ISP share a PLL, therefore need to have related frequencies. ARM, SDRAM and GPU each have their own PLLs and can have unrelated frequencies.[9]
The following is not necessary with "avoid_pwm_pll=1".
The point is that over clocking h264_freq, v3d_freq and isp_freq is at best useless because it won't have any effect on the GUI and the default frequency is enough to decode video files without trouble.
By the way, my settings are useless too, it was just to see what I can get from my Pi2, but in practice, I don't really see a difference with a 'softer' over clock or no over clock at all (just using Confluence skin, over clock probably help with heavier skins)