[PATCH v4 1/2] dt-bindings: sram: Document reg-io-width property

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Some SRAMs need to be accessed with a specific access width, define
the 'reg-io-width' property specifying such access sizes.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Signed-off-by: Florian Fainelli <florian.fainelli@xxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/sram/sram.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/sram/sram.yaml b/Documentation/devicetree/bindings/sram/sram.yaml
index 0922d1f71ba8..7c1337e159f2 100644
--- a/Documentation/devicetree/bindings/sram/sram.yaml
+++ b/Documentation/devicetree/bindings/sram/sram.yaml
@@ -101,6 +101,12 @@ patternProperties:
           IO mem address range, relative to the SRAM range.
         maxItems: 1
 
+      reg-io-width:
+        description:
+          The size (in bytes) of the IO accesses that should be performed on the
+          SRAM.
+        enum: [1, 2, 4, 8]
+
       pool:
         description:
           Indicates that the particular reserved SRAM area is addressable
-- 
2.34.1





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