On Tue Jul 21 08:41:12 2026 +0200, Igor Paunovic wrote:
> The HDMI RX controller can expose the audio embedded in the incoming
> HDMI stream as an ALSA capture device. Document the #sound-dai-cells
> property so that a sound card can reference the HDMI RX audio DAI.
>
> Signed-off-by: Igor Paunovic <[email protected]>
> Reviewed-by: Sebastian Reichel <[email protected]>
> Reviewed-by: Krzysztof Kozlowski <[email protected]>
> Reviewed-by: Dmitry Osipenko <[email protected]>
> Signed-off-by: Hans Verkuil <[email protected]>
Patch committed.
Thanks,
Hans Verkuil
.../devicetree/bindings/media/snps,dw-hdmi-rx.yaml | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
---
diff --git a/Documentation/devicetree/bindings/media/snps,dw-hdmi-rx.yaml
b/Documentation/devicetree/bindings/media/snps,dw-hdmi-rx.yaml
index b7f6c87d0e06..b80660da1050 100644
--- a/Documentation/devicetree/bindings/media/snps,dw-hdmi-rx.yaml
+++ b/Documentation/devicetree/bindings/media/snps,dw-hdmi-rx.yaml
@@ -78,6 +78,13 @@ properties:
The phandle of the syscon node for the Video Output GRF register
to enable EDID transfer through SDAIN and SCLIN.
+ "#sound-dai-cells":
+ const: 1
+ description:
+ The HDMI RX controller has two digital audio interfaces, one for
+ I2S and one for S/PDIF. The DAI cell selects the interface, 0 for
+ I2S and 1 for S/PDIF.
+
required:
- compatible
- reg
@@ -90,7 +97,10 @@ required:
- pinctrl-0
- hpd-gpios
-additionalProperties: false
+allOf:
+ - $ref: /schemas/sound/dai-common.yaml#
+
+unevaluatedProperties: false
examples:
- |
@@ -129,4 +139,5 @@ examples:
pinctrl-0 = <&hdmim1_rx_cec &hdmim1_rx_hpdin &hdmim1_rx_scl
&hdmim1_rx_sda &hdmirx_5v_detection>;
pinctrl-names = "default";
hpd-gpios = <&gpio1 22 GPIO_ACTIVE_LOW>;
+ #sound-dai-cells = <1>;
};
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