[PATCH v4 13/16] dt-bindings: ufs: exynos-ufs: add io-coherency property

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Add "samsung,sysreg" regmap and the offset to the ufs shareaibility
register for setting io coherency of the samsung ufs. "dma-coherent"
property is also required because the driver code needs to know.

Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Signed-off-by: Chanho Park <chanho61.park@xxxxxxxxxxx>
---
 .../devicetree/bindings/ufs/samsung,exynos-ufs.yaml   | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml b/Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml
index b9ca8ef4f2be..d9b7535b872f 100644
--- a/Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml
+++ b/Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml
@@ -54,6 +54,17 @@ properties:
   phy-names:
     const: ufs-phy
 
+  samsung,sysreg:
+    $ref: '/schemas/types.yaml#/definitions/phandle'
+    description: phandle for FSYSx sysreg interface, used to control
+                 sysreg register bit for UFS IO Coherency
+
+  samsung,ufs-shareability-reg-offset:
+    $ref: '/schemas/types.yaml#/definitions/uint32'
+    description: Offset to the shareability register for io-coherency
+
+  dma-coherent: true
+
 required:
   - compatible
   - reg
-- 
2.33.0




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