The IP supports using DMA for reading and writing data from the FIFO,
document it.

Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
---
 .../devicetree/bindings/spi/renesas,rzv2h-rspi.yaml       | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/renesas,rzv2h-rspi.yaml b/Documentation/devicetree/bindings/spi/renesas,rzv2h-rspi.yaml
index 069557a587b5..a588b112e11e 100644
--- a/Documentation/devicetree/bindings/spi/renesas,rzv2h-rspi.yaml
+++ b/Documentation/devicetree/bindings/spi/renesas,rzv2h-rspi.yaml
@@ -57,6 +57,14 @@ properties:
       - const: presetn
       - const: tresetn
 
+  dmas:
+    maxItems: 2
+
+  dma-names:
+    items:
+      - const: rx
+      - const: tx
+
   power-domains:
     maxItems: 1
 
-- 
2.52.0