Hi, On Tue, Aug 27, 2019 at 10:29:33PM +0800, Chen-Yu Tsai wrote: > On Tue, Aug 27, 2019 at 10:25 PM Maxime Ripard <mripard@xxxxxxxxxx> wrote: > > > > From: Maxime Ripard <maxime.ripard@xxxxxxxxxxx> > > > > The Allwinner A33 SoC have an embedded audio codec that is supported in Linux, > > with a matching Device Tree binding. > > > > Now that we have the DT validation in place, let's convert the device tree > > bindings for that controller over to a YAML schemas. > > > > Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxx> > > --- > > .../sound/allwinner,sun8i-a33-codec.yaml | 57 +++++++++++++++++ > > .../bindings/sound/sun8i-a33-codec.txt | 63 ------------------- > > 2 files changed, 57 insertions(+), 63 deletions(-) > > create mode 100644 Documentation/devicetree/bindings/sound/allwinner,sun8i-a33-codec.yaml > > delete mode 100644 Documentation/devicetree/bindings/sound/sun8i-a33-codec.txt > > > > diff --git a/Documentation/devicetree/bindings/sound/allwinner,sun8i-a33-codec.yaml b/Documentation/devicetree/bindings/sound/allwinner,sun8i-a33-codec.yaml > > new file mode 100644 > > index 000000000000..5e7cc05bbff1 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/sound/allwinner,sun8i-a33-codec.yaml > > @@ -0,0 +1,57 @@ > > +# SPDX-License-Identifier: GPL-2.0 > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/sound/allwinner,sun8i-a33-codec.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: Allwinner A33 Codec Device Tree Bindings > > + > > +maintainers: > > + - Chen-Yu Tsai <wens@xxxxxxxx> > > + - Maxime Ripard <maxime.ripard@xxxxxxxxxxx> > > + > > +properties: > > + "#sound-dai-cells": > > + const: 0 > > + > > + compatible: > > + const: allwinner,sun8i-a33-codec > > + > > + reg: > > + maxItems: 1 > > + > > + interrupts: > > + maxItems: 1 > > + > > + clocks: > > + items: > > + - description: Bus Clock > > + - description: Module Clock > > + > > + clock-names: > > + items: > > + - const: bus > > + - const: mod > > + > > +required: > > + - "#sound-dai-cells" > > + - compatible > > + - reg > > + - interrupts > > + - clocks > > + - clock-names > > + > > +additionalProperties: false > > + > > +examples: > > + - | > > + audio-codec@1c22e00 { > > + #sound-dai-cells = <0>; > > + compatible = "allwinner,sun8i-a33-codec"; > > + reg = <0x01c22e00 0x400>; > > + interrupts = <0 29 4>; > > + clocks = <&ccu 47>, <&ccu 92>; > > + clock-names = "bus", "mod"; > > + }; > > + > > +... > > diff --git a/Documentation/devicetree/bindings/sound/sun8i-a33-codec.txt b/Documentation/devicetree/bindings/sound/sun8i-a33-codec.txt > > deleted file mode 100644 > > index 7ecf6bd60d27..000000000000 > > --- a/Documentation/devicetree/bindings/sound/sun8i-a33-codec.txt > > +++ /dev/null > > @@ -1,63 +0,0 @@ > > -Allwinner SUN8I audio codec > > ------------------------------------- > > - > > -On Sun8i-A33 SoCs, the audio is separated in different parts: > > - - A DAI driver. It uses the "sun4i-i2s" driver which is > > - documented here: > > - Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-i2s.yaml > > - - 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 > > - > > -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-a33-audio"; > > - 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"; > > At some point we should start listing the endpoints available for routing? Yeah, we should do that. I'm not sure how easy it would be using the schemas though. Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
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