Commit b1f35dfd authored by Maxime Ripard's avatar Maxime Ripard Committed by Mark Brown

dt-bindings: sound: sun4i-spdif: Document that the RX channel can be missing

The H3 and compatibles controllers don't have any reception capabilities,
even though it was never documented as such in the binding before.

Therefore, on those controllers, we don't have the option to set an RX DMA
channel.

This was already done in the DTSI, but the binding itself was never
updated. Let's add a special case in the schemas.
Signed-off-by: default avatarMaxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 506c7f9b
...@@ -44,19 +44,11 @@ properties: ...@@ -44,19 +44,11 @@ properties:
- const: apb - const: apb
- const: spdif - const: spdif
dmas:
items:
- description: RX DMA Channel
- description: TX DMA Channel
dma-names:
items:
- const: rx
- const: tx
# Even though it only applies to subschemas under the conditionals, # Even though it only applies to subschemas under the conditionals,
# not listing them here will trigger a warning because of the # not listing them here will trigger a warning because of the
# additionalsProperties set to false. # additionalsProperties set to false.
dmas: true
dma-names: true
resets: resets:
maxItems: 1 maxItems: 1
...@@ -73,6 +65,32 @@ allOf: ...@@ -73,6 +65,32 @@ allOf:
required: required:
- resets - resets
- if:
properties:
compatible:
contains:
const: allwinner,sun8i-h3-spdif
then:
properties:
dmas:
description: TX DMA Channel
dma-names:
const: tx
else:
properties:
dmas:
items:
- description: RX DMA Channel
- description: TX DMA Channel
dma-names:
items:
- const: rx
- const: tx
required: required:
- "#sound-dai-cells" - "#sound-dai-cells"
- compatible - compatible
......
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