| Message ID | 1389397669-10929-3-git-send-email-vbridgers2013@gmail.com |
|---|---|
| State | Superseded, archived |
| Headers | show |
2014/1/10 Vince Bridgers <vbridgers2013@gmail.com>: > This change adds a parameter for the Synopsys 10/100/1000 > stmmac Ethernet driver to configure the maximum MTU supported > by the EMAC instance. Synopsys allows the FIFO sizes to > be configured when the cores are built for a particular > device, but do not provide a way for the driver to read > information from the device about the maximum MTU size > supported as limited by the device's FIFO size. > > Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com> > --- > Documentation/devicetree/bindings/net/stmmac.txt | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/Documentation/devicetree/bindings/net/stmmac.txt b/Documentation/devicetree/bindings/net/stmmac.txt > index eba0e5e..7db314e 100644 > --- a/Documentation/devicetree/bindings/net/stmmac.txt > +++ b/Documentation/devicetree/bindings/net/stmmac.txt > @@ -30,6 +30,10 @@ Required properties: > > Optional properties: > - mac-address: 6 bytes, mac address > +- snps,max-mtu: Maximum MTU permitted. This parameter is useful since > + different implementations of the Synopsys MAC may have > + different FIFO sizes depending on the selections > + made in Synopsys Core Consultant. ePAPR v1.1 defines "max-frame-size" as being "Specifies maximum packet length in bytes that the physical interface can send and receive.", I would recommend you use that instead of this custom property. > > Examples: > > @@ -40,5 +44,6 @@ Examples: > interrupts = <24 23>; > interrupt-names = "macirq", "eth_wake_irq"; > mac-address = [000000000000]; /* Filled in by U-Boot */ > + snps,max-mtu = <3800>; > phy-mode = "gmii"; > }; > -- > 1.7.9.5 > > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/net/stmmac.txt b/Documentation/devicetree/bindings/net/stmmac.txt index eba0e5e..7db314e 100644 --- a/Documentation/devicetree/bindings/net/stmmac.txt +++ b/Documentation/devicetree/bindings/net/stmmac.txt @@ -30,6 +30,10 @@ Required properties: Optional properties: - mac-address: 6 bytes, mac address +- snps,max-mtu: Maximum MTU permitted. This parameter is useful since + different implementations of the Synopsys MAC may have + different FIFO sizes depending on the selections + made in Synopsys Core Consultant. Examples: @@ -40,5 +44,6 @@ Examples: interrupts = <24 23>; interrupt-names = "macirq", "eth_wake_irq"; mac-address = [000000000000]; /* Filled in by U-Boot */ + snps,max-mtu = <3800>; phy-mode = "gmii"; };
This change adds a parameter for the Synopsys 10/100/1000 stmmac Ethernet driver to configure the maximum MTU supported by the EMAC instance. Synopsys allows the FIFO sizes to be configured when the cores are built for a particular device, but do not provide a way for the driver to read information from the device about the maximum MTU size supported as limited by the device's FIFO size. Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com> --- Documentation/devicetree/bindings/net/stmmac.txt | 5 +++++ 1 file changed, 5 insertions(+)