Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1560614

[PATCH v2 07/10] dt-bindings: sound: Add sun8i audio documentation

From Mylène Josserand <mylene.josserand@free-electrons.com>
Newsgroups linux.kernel
Subject [PATCH v2 07/10] dt-bindings: sound: Add sun8i audio documentation
Date 2017-01-17 15:10 +0100
Message-ID <t0CCv-84W-37@gated-at.bofh.it> (permalink)
References <t0CCu-84W-17@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

Add the documentation for dt-binding of the digital audio codec driver
and the audio card driver for Sun8i SoCs.

Signed-off-by: Mylène Josserand <mylene.josserand@free-electrons.com>
---
 .../devicetree/bindings/sound/sun8i-codec.txt      | 76 ++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/sun8i-codec.txt

diff --git a/Documentation/devicetree/bindings/sound/sun8i-codec.txt b/Documentation/devicetree/bindings/sound/sun8i-codec.txt
new file mode 100644
index 000000000000..ce3c05219e33
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/sun8i-codec.txt
@@ -0,0 +1,76 @@
+Allwinner SUN8I audio codec
+------------------------------------
+
+On Sun8i SoCs, and particularly on A33, the audio is separated in
+different parts:
+	  - A DAI driver. It uses the "sun4i-i2s" driver which is
+	  documented here:
+	  Documentation/devicetree/bindings/sound/sun4i-i2s.txt
+	  - An analog part of the codec which is handled as PRCM registers.
+	  See Documentation/devicetree/bindings/sound/sun8i-codec-analog.txt
+	  - An digital part of the codec which is documented in this current
+	  binding documentation.
+	  - And finally, an audio card which links all the above components.
+	  The simple-audio card will be used.
+	  See Documentation/devicetree/bindings/sound/simple-card.txt
+
+This bindings documentation exposes Sun8i codec (digital part).
+
+Required properties:
+- compatible: must be "allwinner,sun8i-a33-codec"
+- reg: must contain the registers location and length
+- interrupts: must contain the codec interrupt
+- clocks: a list of phandle + clock-specifer pairs, one for each entry
+  in clock-names.
+- clock-names: should contain followings:
+   - "bus": the parent APB clock for this controller
+   - "mod": the parent module clock
+
+Example:
+codec: codec@01c22e00 {
+	#sound-dai-cells = <0>;
+	compatible = "allwinner,sun8i-a33-codec";
+	reg = <0x01c22e00 0x400>;
+	interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
+	clocks = <&ccu CLK_BUS_CODEC>, <&ccu CLK_AC_DIG>;
+	clock-names = "bus", "mod";
+	status = "disabled";
+};
+
+Here is an example to add a sound card and the codec binding on sun8i SoCs that
+are similar to A33 using simple-card:
+
+	sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "Sun8i Audio Card";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,frame-master = <&link_codec>;
+		simple-audio-card,bitclock-master = <&link_codec>;
+		simple-audio-card,mclk-fs = <512>;
+		simple-audio-card,aux-devs = <&codec_analog>;
+		simple-audio-card,routing =
+				"Left DAC", "Digital Left DAC",
+				"Right DAC", "Digital Right DAC";
+
+		simple-audio-card,cpu {
+			sound-dai = <&dai>;
+		};
+
+		link_codec: simple-audio-card,codec {
+			sound-dai = <&codec>;
+		};
+
+	soc@01c00000 {
+		[...]
+
+		codec: codec@01c22e00 {
+			#sound-dai-cells = <0>;
+			compatible = "allwinner,sun8i-a33-codec";
+			reg = <0x01c22e00 0x400>;
+			interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&ccu CLK_BUS_CODEC>, <&ccu CLK_AC_DIG>;
+			clock-names = "bus", "mod";
+			status = "disabled";
+		};
+	};
+
-- 
2.11.0

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH v2 00/10] Add sun8i A33 audio driver Mylène Josserand          <mylene.josserand@free-electrons.com> - 2017-01-17 15:10 +0100
  [PATCH v2 08/10] ARM: dts: sun8i: Add audio codec, dai and card for A33 Mylène Josserand          <mylene.josserand@free-electrons.com> - 2017-01-17 15:10 +0100
    Re: [PATCH v2 08/10] ARM: dts: sun8i: Add audio codec, dai and card  for A33 Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-17 18:00 +0100
  [PATCH v2 07/10] dt-bindings: sound: Add sun8i audio documentation Mylène Josserand          <mylene.josserand@free-electrons.com> - 2017-01-17 15:10 +0100
    Re: [PATCH v2 07/10] dt-bindings: sound: Add sun8i audio  documentation Mark Brown <broonie@kernel.org> - 2017-01-17 18:00 +0100
      Re: [PATCH v2 07/10] dt-bindings: sound: Add sun8i audio  documentation Mylene Josserand <mylene.josserand@free-electrons.com> - 2017-01-18 09:30 +0100
    Re: [PATCH v2 07/10] dt-bindings: sound: Add sun8i audio  documentation Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-17 18:00 +0100
  [PATCH v2 09/10] ARM: dts: sun8i: parrot: Enable audio nodes Mylène Josserand          <mylene.josserand@free-electrons.com> - 2017-01-17 15:10 +0100
  [PATCH v2 03/10] dt-bindings: sound: Add new reset compatible for sun4i-i2s Mylène Josserand          <mylene.josserand@free-electrons.com> - 2017-01-17 15:10 +0100
    Re: [PATCH v2 03/10] dt-bindings: sound: Add new reset compatible  for sun4i-i2s Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-17 17:50 +0100
      Re: [PATCH v2 03/10] dt-bindings: sound: Add new reset compatible for  sun4i-i2s Mylene Josserand <mylene.josserand@free-electrons.com> - 2017-01-18 09:30 +0100
  [PATCH v2 02/10] clk: ccu-sun8i-a33: Add CLK_SET_RATE_PARENT to ac-dig Mylène Josserand          <mylene.josserand@free-electrons.com> - 2017-01-17 15:10 +0100
    Re: [PATCH v2 02/10] clk: ccu-sun8i-a33: Add CLK_SET_RATE_PARENT to  ac-dig Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-17 18:00 +0100
      Re: [PATCH v2 02/10] clk: ccu-sun8i-a33: Add CLK_SET_RATE_PARENT to  ac-dig Mylene Josserand <mylene.josserand@free-electrons.com> - 2017-01-18 09:00 +0100
  [PATCH v2 04/10] ASoC: sun4i-i2s: Add quirks to handle new compatible for reset Mylène Josserand          <mylene.josserand@free-electrons.com> - 2017-01-17 15:10 +0100
    Re: [PATCH v2 04/10] ASoC: sun4i-i2s: Add quirks to handle new  compatible for reset Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-17 17:50 +0100
  [PATCH v2 10/10] ARM: dts: sun8i: sinlinx: Enable audio nodes Mylène Josserand          <mylene.josserand@free-electrons.com> - 2017-01-17 15:10 +0100

csiph-web