Describes two additional parameters that could be optionally added in devicetree. Signed-off-by: Fred Lefranc <hardware.evs@xxxxxxxxx> --- .../devicetree/bindings/net/fsl-fman.txt | 20 +++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/Documentation/devicetree/bindings/net/fsl-fman.txt b/Documentation/devicetree/bindings/net/fsl-fman.txt index 020337f3c05f..bcd0cf8ca9e9 100644 --- a/Documentation/devicetree/bindings/net/fsl-fman.txt +++ b/Documentation/devicetree/bindings/net/fsl-fman.txt @@ -117,6 +117,26 @@ PROPERTIES erratum A050385 which indicates that DMA transactions that are split can result in a FMan lock. +- fsl,max-frm-sz + Usage: optional + Value type: <u32> + Definition: Max frame size, across all interfaces. + Must be large enough to accommodate the network MTU, but small enough + to avoid wasting skb memory. + 1522 by default. + +- fsl,rx-extra-headroom + Usage: optional + Value type: <u32> + Definition: Extra headroom for Rx buffers. + FMan is instructed to allocate, on the Rx path, this amount of + space at the beginning of a data buffer, beside the DPA private + data area and the IC fields. + Does not impact Tx buffer layout. + 64 by default, it's needed on + particular forwarding scenarios that add extra headers to the + forwarded frame. + ============================================================================= FMan MURAM Node -- 2.25.1
