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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
..
arm FS#9295: Detect external power supply for ipod 1st & 2nd gen (Mark Fawcus) 2020-08-06 09:28:28 -04:00
coldfire Coldfire: Don't clobber alwarm wakeup signal in dualboot mode 2019-01-01 23:30:44 -05:00
hosted [4/4] Remove HAVE_LCD_BITMAP, as it's now the only choice. 2020-07-24 21:20:13 +00:00
mips jz4760: Major clocking improvements for audio PLL 2020-08-07 15:55:31 -04:00