dt-bindings: net: renesas-ravb: Make stream buffer optional

The Stream Buffer for EtherAVB-IF (STBE) is an optional component, and is not present on all SoCs. Document this in the DT bindings, including a list of SoCs that do have it. Fixes: 785ec87 ("ravb: document R8A77970 bindings") Fixes: f231c41 ("dt-bindings: net: renesas-ravb: Add support for R8A77995 RAVB") Signed-off-by: Geert Uytterhoeven <[email protected]> Reviewed-by: Simon Horman <[email protected]> Acked-by: Sergei Shtylyov <[email protected]> Reviewed-by: Rob Herring <[email protected]> Signed-off-by: David S. Miller <[email protected]>
open-power-host-os · Mar 7, 2018 · 25b5cdf · 25b5cdf
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commit 25b5cdf
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/Documentation/devicetree/bindings/net/renesas,ravb.txt b/Documentation/devicetree/bindings/net/renesas,ravb.txt
@@ -27,7 +27,11 @@ Required properties:
 	SoC-specific version corresponding to the platform first followed by
 	the generic version.
 
-- reg: offset and length of (1) the register block and (2) the stream buffer.
+- reg: Offset and length of (1) the register block and (2) the stream buffer.
+       The region for the register block is mandatory.
+       The region for the stream buffer is optional, as it is only present on
+       R-Car Gen2 and RZ/G1 SoCs, and on R-Car H3 (R8A7795), M3-W (R8A7796),
+       and M3-N (R8A77965).
 - interrupts: A list of interrupt-specifiers, one for each entry in
 	      interrupt-names.
 	      If interrupt-names is not present, an interrupt specifier