diff mbox series

[v3,2/2] dt-bindings: sound: sun4i-spdif: Document that the RX channel can be missing

Message ID a0558cf83011d21c4f44fecc078dff1e67cdbe9d.1557993523.git-series.maxime.ripard@bootlin.com (mailing list archive)
State Accepted
Commit b1f35dfd7c2f509b0736f1ff02c314130b6b773e
Headers show
Series [v3,1/2] dt-bindings: sound: Convert Allwinner SPDIF binding to YAML | expand

Commit Message

Maxime Ripard May 16, 2019, 7:59 a.m. UTC
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: Maxime Ripard <maxime.ripard@bootlin.com>

---

Changes from v2:
  - Removed the expanded items description and rely on yaml-bindings tools
    to fill them
  - Fix typo in dmas property description

Changes from v1:
  - switch to a draft7 conditional
---
 Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-spdif.yaml | 38 ++++++++++++++++++++++++++++----------
 1 file changed, 28 insertions(+), 10 deletions(-)

Comments

Rob Herring May 16, 2019, 1:23 p.m. UTC | #1
On Thu, May 16, 2019 at 2:59 AM Maxime Ripard <maxime.ripard@bootlin.com> wrote:
>
> 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: Maxime Ripard <maxime.ripard@bootlin.com>
>
> ---
>
> Changes from v2:
>   - Removed the expanded items description and rely on yaml-bindings tools
>     to fill them
>   - Fix typo in dmas property description
>
> Changes from v1:
>   - switch to a draft7 conditional
> ---
>  Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-spdif.yaml | 38 ++++++++++++++++++++++++++++----------
>  1 file changed, 28 insertions(+), 10 deletions(-)

Reviewed-by: Rob Herring <robh@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-spdif.yaml b/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-spdif.yaml
index 5d72d48e923e..a49ef2294a74 100644
--- a/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-spdif.yaml
+++ b/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-spdif.yaml
@@ -44,19 +44,11 @@  properties:
       - const: apb
       - 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,
   # not listing them here will trigger a warning because of the
   # additionalsProperties set to false.
+  dmas: true
+  dma-names: true
   resets:
     maxItems: 1
 
@@ -73,6 +65,32 @@  allOf:
       required:
         - 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:
   - "#sound-dai-cells"
   - compatible