1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/mt8192-afe-pcm.yaml b/Documentation/devicetree/bindings/sound/mt8192-afe-pcm.yaml
index 064ef172bef4..8ddf49b0040d 100644
--- a/Documentation/devicetree/bindings/sound/mt8192-afe-pcm.yaml
+++ b/Documentation/devicetree/bindings/sound/mt8192-afe-pcm.yaml
@@ -23,6 +23,10 @@ properties:
   reset-names:
     const: audiosys
 
+  memory-region:
+    description: memory region for audio DMA buffers
+    maxItems: 1
+
   mediatek,apmixedsys:
     $ref: /schemas/types.yaml#/definitions/phandle
     description: The phandle of the mediatek apmixedsys controller
@@ -95,6 +99,7 @@ examples:
                       "aud_dac_predis_clk",
                       "aud_infra_clk",
                       "aud_infra_26m_clk";
+        memory-region = <&afe_dma_mem>;
     };
 
 ...