[PATCH v3 1/2] dt-bindings: dma: ti: Add J721S2 BCDMA

[Vaishnav Achath <vaishnav.a@ti.com>]

Add bindings for J721S2 BCDMA instance dedicated for Camera
Serial Interface. Unlike AM62A CSI BCDMA, this instance has RX
and TX channels but lacks block copy channels.

Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
---

V2->V3:
  * Avoid using if:else:if, instead move ti,am64-dmss-bcdma
  to new if:, also keep entries in alphabetical order.

V1->V2:
     * Move J721S2 BCDMA entry to else condition to avoid failure
     with AM62A BCDMA.

 .../devicetree/bindings/dma/ti/k3-bcdma.yaml  | 54 +++++++++++++------
 1 file changed, 39 insertions(+), 15 deletions(-)

diff --git a/Documentation/devicetree/bindings/dma/ti/k3-bcdma.yaml b/Documentation/devicetree/bindings/dma/ti/k3-bcdma.yaml
index beecfe7a1732..4ca300a42a99 100644
--- a/Documentation/devicetree/bindings/dma/ti/k3-bcdma.yaml
+++ b/Documentation/devicetree/bindings/dma/ti/k3-bcdma.yaml
@@ -33,6 +33,7 @@ properties:
     enum:
       - ti,am62a-dmss-bcdma-csirx
       - ti,am64-dmss-bcdma
+      - ti,j721s2-dmss-bcdma-csi
 
   reg:
     minItems: 3
@@ -151,7 +152,12 @@ allOf:
       required:
         - power-domains
 
-    else:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: ti,am64-dmss-bcdma
+    then:
       properties:
         reg:
           minItems: 5
@@ -168,6 +174,28 @@ allOf:
         - ti,sci-rm-range-bchan
         - ti,sci-rm-range-tchan
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: ti,j721s2-dmss-bcdma-csi
+    then:
+      properties:
+        ti,sci-rm-range-bchan: false
+
+        reg:
+          maxItems: 4
+
+        reg-names:
+          items:
+            - const: gcfg
+            - const: rchanrt
+            - const: tchanrt
+            - const: ringrt
+
+      required:
+        - ti,sci-rm-range-tchan
+
 unevaluatedProperties: false
 
 examples:
-- 
2.17.1