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From: Richard Fitzgerald <rf@opensource.cirrus.com>
To: <broonie@kernel.org>, <robh+dt@kernel.org>,
	<kuninori.morimoto.gx@renesas.com>
Cc: <alsa-devel@alsa-project.org>, <devicetree@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <patches@opensource.cirrus.com>,
	Richard Fitzgerald <rf@opensource.cirrus.com>
Subject: [PATCH 1/2] ASoC: dt-bindings: audio-graph-port: Add dai-tdm-slot-width-map
Date: Wed, 16 Feb 2022 17:14:07 +0000	[thread overview]
Message-ID: <20220216171408.265605-2-rf@opensource.cirrus.com> (raw)
In-Reply-To: <20220216171408.265605-1-rf@opensource.cirrus.com>

Some audio hardware cannot support a fixed slot width or a slot width
equal to the sample width in all cases. This is usually due either to
limitations of the audio serial port or system clocking restrictions.

This property allows setting a mapping of sample widths and the
corresponding tdm slot widths.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
---
 .../devicetree/bindings/sound/audio-graph-port.yaml        | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/audio-graph-port.yaml b/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
index 476dcb49ece6..420adad49382 100644
--- a/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
+++ b/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
@@ -71,4 +71,11 @@ patternProperties:
         description: CPU to Codec rate channels.
         $ref: /schemas/types.yaml#/definitions/uint32
 
+      dai-tdm-slot-width-map:
+        description: Mapping of sample widths to slot widths. For hardware that
+          cannot support a fixed slot width or a slot width equal to sample
+          width. An array containing one or more pairs of values. Each pair
+          of values is a sample_width and the corresponding slot_width.
+        $ref: /schemas/types.yaml#/definitions/uint32-array
+
 additionalProperties: true
-- 
2.30.2


  reply	other threads:[~2022-02-16 17:40 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-16 17:14 [PATCH 0/2] ASoC: audio_graph_card2: Support variable slot widths Richard Fitzgerald
2022-02-16 17:14 ` Richard Fitzgerald [this message]
2022-02-16 17:14 ` [PATCH 2/2] ASoC: audio_graph_card2: Add support for " Richard Fitzgerald
2022-02-17  0:23   ` Kuninori Morimoto
2022-02-17 12:51     ` Richard Fitzgerald

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