[PATCH v3 3/9] ASoC: dt-bindings: mt8173-afe-pcm: Allow specifying reserved memory region

[Chen-Yu Tsai <wenst@chromium.org>]

It is desirable to reserve memory for the audio frontend.

Allow the "memory-region" property, to be used to point to a reserved
memory region.

Acked-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
---
 .../devicetree/bindings/sound/mediatek,mt8173-afe-pcm.yaml   | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/mediatek,mt8173-afe-pcm.yaml b/Documentation/devicetree/bindings/sound/mediatek,mt8173-afe-pcm.yaml
index 666408d32f5c..d8993b5d457a 100644
--- a/Documentation/devicetree/bindings/sound/mediatek,mt8173-afe-pcm.yaml
+++ b/Documentation/devicetree/bindings/sound/mediatek,mt8173-afe-pcm.yaml
@@ -48,6 +48,10 @@ properties:
   power-domains:
     maxItems: 1
 
+  memory-region:
+    description: memory region for audio DMA buffers
+    maxItems: 1
+
 required:
   - compatible
   - reg
@@ -90,4 +94,5 @@ examples:
                        "i2s2_m",
                        "i2s3_m",
                        "i2s3_b";
+          memory-region = <&afe_dma_mem>;
     };
-- 
2.50.0.rc1.591.g9c95f17f64-goog