target/linux/brcm2708/patches-4.19/950-0085-ASoC-wm8804-MCLK-configuration-options-32-bit.patch

   1 From 0d0387de52b82694b9df90476e21e6828025d1e9 Mon Sep 17 00:00:00 2001
   2 From: Daniel Matuschek <info@crazy-audio.com>
   3 Date: Wed, 15 Jan 2014 21:41:23 +0100
   4 Subject: [PATCH 085/725] ASoC: wm8804: MCLK configuration options, 32-bit
   5
   6 WM8804 can run with PLL frequencies of 256xfs and 128xfs for most sample
   7 rates. At 192kHz only 128xfs is supported. The existing driver selects
   8 128xfs automatically for some lower samples rates. By using an
   9 additional mclk_div divider, it is now possible to control the
  10 behaviour. This allows using 256xfs PLL frequency on all sample rates up
  11 to 96kHz. It should allow lower jitter and better signal quality. The
  12 behavior has to be controlled by the sound card driver, because some
  13 sample frequency share the same setting. e.g. 192kHz and 96kHz use
  14 24.576MHz master clock. The only difference is the MCLK divider.
  15
  16 This also added support for 32bit data.
  17
  18 Signed-off-by: Daniel Matuschek <daniel@matuschek.net>
  19 ---
  20  sound/soc/codecs/wm8804.c | 1 +
  21  1 file changed, 1 insertion(+)
  22
  23 --- a/sound/soc/codecs/wm8804.c
  24 +++ b/sound/soc/codecs/wm8804.c
  25 @@ -550,6 +550,7 @@ static const struct snd_soc_component_dr
  26         .use_pmdown_time        = 1,
  27         .endianness             = 1,
  28         .non_legacy_dai_naming  = 1,
  29 +       .idle_bias_on           = true,
  30  };
  31
  32  const struct regmap_config wm8804_regmap_config = {