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dt-bindings: ufs: exynos-ufs: add io-coherency property

Add "samsung,sysreg" regmap and the offset to the ufs shareability
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@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211018124216.153072-13-chanho61.park@samsung.com

authored by

Chanho Park and committed by
Rob Herring 57e9befa a5690a52

+8
+8
Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml
··· 54 54 phy-names: 55 55 const: ufs-phy 56 56 57 + samsung,sysreg: 58 + $ref: '/schemas/types.yaml#/definitions/phandle-array' 59 + description: Should be phandle/offset pair. The phandle to the syscon node 60 + which indicates the FSYSx sysreg interface and the offset of 61 + the control register for UFS io coherency setting. 62 + 63 + dma-coherent: true 64 + 57 65 required: 58 66 - compatible 59 67 - reg