[PATCH v2] dt-bindings: dma: xilinx: Add power-domains to xlnx,zynqmp-dpdma

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DP DMA has own power domain that's why describe optional power-domain
property.

Signed-off-by: Michal Simek <michal.simek@xxxxxxx>
---

Changes in v2:
- rewrite commit message - requested by Krzysztof

The commit b06112cd5e08 ("arm64: dts: zynqmp: Add power domain for the
DisplayPort DMA controller") added this property already in Linux that's
why the patch is also fixing dts_check warnings.

---
 .../devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml      | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml b/Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml
index 825294e3f0e8..f066f6983899 100644
--- a/Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml
+++ b/Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml
@@ -41,6 +41,9 @@ properties:
   clock-names:
     const: axi_clk
 
+  power-domains:
+    maxItems: 1
+
 required:
   - "#dma-cells"
   - compatible
-- 
2.36.1




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