linux-kernel - [PATCH v6 3/4] ASoC: dt-bindings: fsl-sai: allow only one dma-names

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Message-Id: <20240308-asrc_8qxp-v6-3-e08f6d030e09@nxp.com>
Date: Fri, 08 Mar 2024 10:30:52 -0500
From: Frank Li <Frank.Li@....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>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Shengjiu Wang <shengjiu.wang@....com>
Cc: linux-sound@...r.kernel.org, devicetree@...r.kernel.org, 
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, Frank Li <Frank.Li@....com>, 
 Conor Dooley <conor.dooley@...rochip.com>
Subject: [PATCH v6 3/4] ASoC: dt-bindings: fsl-sai: allow only one
 dma-names

Some sai only connect one direction dma (rx/tx) in SOC. For example:
imx8qxp sai5 only connect tx dma channel. So allow only one "rx" or "tx"
for dma-names.

Remove description under dmas because no user use index to get dma channel.
All user use 'dma-names' to get correct dma channel. dma-names already in
'required' list.

Acked-by: Conor Dooley <conor.dooley@...rochip.com>
Signed-off-by: Frank Li <Frank.Li@....com>
---
 Documentation/devicetree/bindings/sound/fsl,sai.yaml | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/fsl,sai.yaml b/Documentation/devicetree/bindings/sound/fsl,sai.yaml
index 2456d958adeef..93e7737a49a7b 100644
--- a/Documentation/devicetree/bindings/sound/fsl,sai.yaml
+++ b/Documentation/devicetree/bindings/sound/fsl,sai.yaml
@@ -81,15 +81,13 @@ properties:
 
   dmas:
     minItems: 1
-    items:
-      - description: DMA controller phandle and request line for RX
-      - description: DMA controller phandle and request line for TX
+    maxItems: 2
 
   dma-names:
     minItems: 1
+    maxItems: 2
     items:
-      - const: rx
-      - const: tx
+      enum: [ rx, tx ]
 
   interrupts:
     items:

-- 
2.34.1