dt-bindings: sound: sun4i-i2s: Document that the RX channel can be missing
authorMaxime Ripard <maxime.ripard@bootlin.com>
Fri, 24 May 2019 12:57:59 +0000 (14:57 +0200)
committerMark Brown <broonie@kernel.org>
Tue, 28 May 2019 14:53:07 +0000 (15:53 +0100)
commiteb5b12843b067d685a8d7a191b928b07934b2d02
tree7c8034b2514c2429d248b5778dc856bfcee0e8ea
parent0a0ca8e94ca36d2153c2fbea69a31f792bfc5831
dt-bindings: sound: sun4i-i2s: Document that the RX channel can be missing

The A83t and compatibles controllers don't have any reception capabilities
on some instances of the controllers, 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: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-i2s.yaml