[PATCH 09/12] dt-bindings: media: st: dcmi: add DMA-MDMA chaining properties

[Alain Volmat]

Add properties update and new sram property necessary in order
to enable the DMA-MDMA chaining.

Signed-off-by: Alain Volmat <alain.volmat at foss.st.com>
---
 Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml b/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml
index 34147127192f..ccaa2d0a2669 100644
--- a/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml
+++ b/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml
@@ -27,11 +27,14 @@ properties:
       - const: mclk
 
   dmas:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
 
   dma-names:
     items:
       - const: tx
+      - const: mdma_tx
+    minItems: 1
 
   resets:
     maxItems: 1
@@ -40,6 +43,14 @@ properties:
     minItems: 1
     maxItems: 2
 
+  sram:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      phandles to a reserved SRAM region which is used as temporary
+      storage memory between DMA and MDMA engines.
+      The region should be defined as child nodes of the AHB SRAM node
+      as per the generic bindings in Documentation/devicetree/bindings/sram/sram.yaml
+
   port:
     $ref: /schemas/graph.yaml#/$defs/port-base
     unevaluatedProperties: false

-- 
2.34.1