# Re: \[PATCH net-next 1/2\] dts: Add bindings for multicast hash bins and perfect filter entries

- From: Rob Herring \<hidden\>
- Date: 2014-02-04 17:25:01 
- List: netdev
- Page: https://ratatoskr.run/netdev/2014/02/8084810
- Thread: https://ratatoskr.run/linux-devicetree/2014/01/8084731/t.md

```text
On Fri, Jan 31, 2014 at 2:15 PM, Vince Bridgers [ref] wrote:
> This change adds bindings for the number of multicast hash bins and perfect
> filter entries supported by the Synopsys EMAC. The Synopsys EMAC core is
> configurable at device creation time, and can be configured for a different
> number of multicast hash bins and a different number of perfect filter entries.
> The device does not provide a way to query these parameters, therefore
> parameters are required. The Altera Cyclone V SOC has support for 256
> multicast hash bins and 128 perfect filter entries, and is different than
> what's currently provided in the stmmac driver.
>
> Signed-off-by: Vince Bridgers <redacted>

Acked-by: Rob Herring <robh@kernel.org>

> ---
>  Documentation/devicetree/bindings/net/stmmac.txt |    6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/net/stmmac.txt b/Documentation/devicetree/bindings/net/stmmac.txt
> index 9d92d42..dbf7498 100644
> --- a/Documentation/devicetree/bindings/net/stmmac.txt
> +++ b/Documentation/devicetree/bindings/net/stmmac.txt
> @@ -34,6 +34,10 @@ Optional properties:
>         reset phandle is given
>  - max-frame-size:      Maximum Transfer Unit (IEEE defined MTU), rather
>                         than the maximum frame size.
> +- snps,multicast-filter-bins:  Number of multicast filter hash bins
> +                               supported by this device instance
> +- snps,perfect-filter-entries: Number of perfect filter entries supported
> +                               by this device instance
>
>  Examples:
>
> @@ -46,4 +50,6 @@ Examples:
>                 mac-address = [000000000000]; /* Filled in by U-Boot */
>                 max-frame-size = <3800>;
>                 phy-mode = "gmii";
> +               snps,multicast-filter-bins = <256>;
> +               snps,perfect-filter-entries = <128>;
>         };
> --
> 1.7.9.5
>
```