[PATCHv3 0/5] ASoC: da7213: support for usage with simple-card

[Sebastian Reichel]

Hi,

This extends the da7213 driver to be used with simple-audio-card in
combination with a fixed clock. Here is a snippet of the downstream
board's DT, that is supposed to be supported by this patchset.

---------------------------------------------------------------------
/ {
	sound {
		compatible = "simple-audio-card";
		simple-audio-card,name = "audio-card";
		simple-audio-card,format = "i2s";
		simple-audio-card,bitclock-master = <&dailink_master>;
		simple-audio-card,frame-master = <&dailink_master>;

		simple-audio-card,widgets = "Speaker", "Ext Spk";
		simple-audio-card,audio-routing = "Ext Spk", "LINE";

		simple-audio-card,cpu {
			sound-dai = <&ssi1>;
		};

		dailink_master: simple-audio-card,codec {
			sound-dai = <&codec>;
		};
	};


	clk_ext_audio_codec: clock-codec {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <12288000>;
	};
};

&i2c1 {
	codec: audio-codec at 1a {
		compatible = "dlg,da7212";
		reg = <0x1a>;
		#sound-dai-cells = <0>;
		VDDA-supply = <&reg_2v5_audio>;
		VDDSP-supply = <&reg_5v0_audio>;
		VDDMIC-supply = <&reg_3v3_audio>;
		VDDIO-supply = <&reg_3v3_audio>;
		clocks = <&clk_ext_audio_codec>;
		clock-names = "mclk";
	};
};
---------------------------------------------------------------------

This is mostly a resend of PATCHv2. There was quite a bit of discussion
for the last patch. As far as I can see no better solution was found and
the patch is fine as is. Sorry for the delay in sending another revision.

Changes since PATCHv2:
 * https://lore.kernel.org/alsa-devel/20191120152406.2744-1-sebastian.reichel@collabora.com/
 * dropped patch converting DA7213 into selectable Kconfig option (merged)
 * fix compatible string in patch 1 (DT binding) as pointed out by Adam Thomson
 * collected Reviewed-by from Adam Thomson for patch 2-4

Changes since PATCHv1:
 * https://lore.kernel.org/alsa-devel/20191108174843.11227-1-sebastian.reichel@collabora.com/
 * add patch adding da7212 compatible to DT bindings
 * update regulator patch, so that VDDA is enabled together with VDDIO
   while the device is enabled to avoid device reset
 * update clock patch, so that automatic PLL handling is not enabled
   when PLL is configured manually
 * update clock patch, so that automatic PLL is disabled when the device
   is suspended
 * update clock patch, so that automatic PLL is configured into bypass
   mode when possible

-- Sebastian

Sebastian Reichel (5):
  ASoC: da7213: Add da7212 DT compatible
  ASoC: da7213: Add regulator support
  ASoC: da7213: move set_sysclk to codec level
  ASoC: da7213: move set_pll to codec level
  ASoC: da7213: add default clock handling

 .../devicetree/bindings/sound/da7213.txt      |   8 +-
 sound/soc/codecs/da7213.c                     | 172 ++++++++++++++++--
 sound/soc/codecs/da7213.h                     |  11 ++
 3 files changed, 175 insertions(+), 16 deletions(-)

-- 
2.26.2