Tegra186 Audio DMA controller has new updates from Tegra210 version.
Thus add new compatibility binding string and the same can be used
by Tegra194 as well.

Signed-off-by: Sameer Pujar <spu...@nvidia.com>
---
 Documentation/devicetree/bindings/dma/nvidia,tegra210-adma.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra210-adma.txt 
b/Documentation/devicetree/bindings/dma/nvidia,tegra210-adma.txt
index 2f35b04..245d306 100644
--- a/Documentation/devicetree/bindings/dma/nvidia,tegra210-adma.txt
+++ b/Documentation/devicetree/bindings/dma/nvidia,tegra210-adma.txt
@@ -4,7 +4,9 @@ The Tegra Audio DMA controller that is used for transferring 
data
 between system memory and the Audio Processing Engine (APE).
 
 Required properties:
-- compatible: Must be "nvidia,tegra210-adma".
+- compatible: Should contain one of the following:
+  - "nvidia,tegra210-adma": for Tegra210
+  - "nvidia,tegra186-adma": for Tegra186 and Tegra194
 - reg: Should contain DMA registers location and length. This should be
   a single entry that includes all of the per-channel registers in one
   contiguous bank.
-- 
2.7.4

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