[PATCH v2] dt-bindings: mmc: renesas,sdhi: Add iommus property

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The SDHI blocks on Renesas R-Car and RZ/G2 SoCs make use of IOMMU.

This patch fixes the below dtbs_check warnings:
arch/arm64/boot/dts/renesas/r8a774e1-hihope-rzg2h-ex-idk-1110wr.dtb: mmc@ee100000: Unevaluated properties are not allowed ('iommus' was unexpected)
	From schema: Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
v1->v2
* Moved the iommus property after dma-names
* Updated commit message
* Included RB tag from Geert

v1: https://lore.kernel.org/lkml/20220829214256.5583-1-prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx/T/
---
 Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml b/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml
index 3ea94d842c33..79dcd5f16a42 100644
--- a/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml
+++ b/Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml
@@ -89,6 +89,9 @@ properties:
         - tx
         - rx
 
+  iommus:
+    maxItems: 1
+
   power-domains:
     maxItems: 1
 
-- 
2.25.1




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