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Commit 4dbfe809 authored by Mark Brown's avatar Mark Brown
Browse files

ASoC: Optimise configuration of WM8903 DC servo 



Modify the default startup sequence in the chip to set the DC servo
dither level for optimal performance.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent c2aef4ff

sound/soc/codecs/wm8903.c

+5 −0
Original line number Diff line number Diff line
@@ -978,6 +978,11 @@ static int wm8903_set_bias_level(struct snd_soc_codec *codec, 
			wm8903_write(codec, WM8903_CLOCK_RATES_2,

				     WM8903_CLK_SYS_ENA);



			/* Change DC servo dither level in startup sequence */

			wm8903_write(codec, WM8903_WRITE_SEQUENCER_0, 0x11);

			wm8903_write(codec, WM8903_WRITE_SEQUENCER_1, 0x1257);

			wm8903_write(codec, WM8903_WRITE_SEQUENCER_2, 0x2);



			wm8903_run_sequence(codec, 0);

			wm8903_sync_reg_cache(codec, codec->reg_cache);