clk: sunxi-ng: sun8i: a83t: Use sigma-delta modulation for audio PLL

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The audio blocks require specific clock rates. Until now we were using
the closest clock rate possible with integer N-M factors. This resulted
in audio playback being slightly slower than it should be.

The vendor kernel gets around this (for newer SoCs) by using sigma-delta
modulation to generate a fractional-N factor. This patch copies the
parameters for the A83T.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

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Chen-Yu Tsai 2017-12-08 16:35:12 +08:00 • committed by Maxime Ripard

parent 10e6eb4f2c

commit e952ca3c6b

1 changed files with 10 additions and 1 deletions

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drivers/clk/sunxi-ng/ccu-sun8i-a83t.c

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