rockbox/firmware/target/mips
Solomon Peachy b3a0187416 jz4760: Major clocking improvements for audio PLL
* for <= 48KHz, BCLK must be 256*freq  (ie bdiv = 4)
 * for <= 96KHz, BCLK must be 128*freq  (ie bdiv = 2)
 * for 11/22/44/88 KHz, disable PLL1 and run off XTAL
 * cut PLL1 with 12/24/48/98 KHz audio from 516->86MHz
 * cut PLL1 with 8/16/32/64 KHz audio from 426->106.5MHz

This should result in significant power savings for
common 44.1KHz audio playback, and pretty good savings
for everything else.

As an added bonus:

 * enable de-emphasis filters at 32, 44.1, and 48 KHz

Change-Id: Ie59067cd46c47e62abf4a32c53519efad104d6c8
2020-08-07 15:55:31 -04:00
..
ingenic_jz47xx jz4760: Major clocking improvements for audio PLL 2020-08-07 15:55:31 -04:00
mmu-mips.c Add cleaned-up xDuoo X3 support 2018-07-28 10:56:31 -04:00
mmu-mips.h Add cleaned-up xDuoo X3 support 2018-07-28 10:56:31 -04:00