linux-kernel - [PATCH v2 02/13] ASoC: dt-bindings: davinci-mcbsp: Add optional clock

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Message-ID: <20240402071213.11671-3-bastien.curutchet@bootlin.com>
Date: Tue,  2 Apr 2024 09:12:02 +0200
From: Bastien Curutchet <bastien.curutchet@...tlin.com>
To: Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Peter Ujfalusi <peter.ujfalusi@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Bastien Curutchet <bastien.curutchet@...tlin.com>
Cc: linux-sound@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	alsa-devel@...a-project.org,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	herve.codina@...tlin.com,
	christophercordahi@...ometrics.ca
Subject: [PATCH v2 02/13] ASoC: dt-bindings: davinci-mcbsp: Add optional clock

The McBSP uses an internal sample rate generator to provide bit clock
or frame clock. This sample rate generator can be programmed to be
driven by McBSP's internal clock source or by an external clock source
(located on CLKS pin). The external clock source is not described in
the bindings.

Add an optional clock item that allows to select an external clock as
sample rate generator's input.

Signed-off-by: Bastien Curutchet <bastien.curutchet@...tlin.com>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml b/Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml
index 139b594dd192..0c2b1936c6a1 100644
--- a/Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml
+++ b/Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml
@@ -50,12 +50,16 @@ properties:
       - const: tx
 
   clocks:
+    minItems: 1
     items:
       - description: functional clock
+      - description: external input clock for sample rate generator.
 
   clock-names:
+    minItems: 1
     items:
       - const: fck
+      - const: clks
 
   power-domains:
     maxItems: 1
-- 
2.44.0