70 lines
2.3 KiB
Plaintext
70 lines
2.3 KiB
Plaintext
|
* Amlogic Meson DWMAC Ethernet controller
|
||
|
|
|
||
|
|
The device inherits all the properties of the dwmac/stmmac devices
|
||
|
|
described in the file stmmac.txt in the current directory with the
|
||
|
|
following changes.
|
||
|
|
|
||
|
|
Required properties on all platforms:
|
||
|
|
|
||
|
|
- compatible: Depending on the platform this should be one of:
|
||
|
|
- "amlogic,meson6-dwmac"
|
||
|
|
- "amlogic,meson8b-dwmac"
|
||
|
|
- "amlogic,meson-gxbb-dwmac"
|
||
|
|
Additionally "snps,dwmac" and any applicable more
|
||
|
|
detailed version number described in net/stmmac.txt
|
||
|
|
should be used.
|
||
|
|
|
||
|
|
- reg: The first register range should be the one of the DWMAC
|
||
|
|
controller. The second range is is for the Amlogic specific
|
||
|
|
configuration (for example the PRG_ETHERNET register range
|
||
|
|
on Meson8b and newer)
|
||
|
|
|
||
|
|
Required properties on Meson8b and newer:
|
||
|
|
- clock-names: Should contain the following:
|
||
|
|
- "stmmaceth" - see stmmac.txt
|
||
|
|
- "clkin0" - first parent clock of the internal mux
|
||
|
|
- "clkin1" - second parent clock of the internal mux
|
||
|
|
|
||
|
|
Optional properties on Meson8b and newer:
|
||
|
|
- amlogic,tx-delay-ns: The internal RGMII TX clock delay (provided
|
||
|
|
by this driver) in nanoseconds. Allowed values
|
||
|
|
are: 0ns, 2ns, 4ns, 6ns.
|
||
|
|
When phy-mode is set to "rgmii" then the TX
|
||
|
|
delay should be explicitly configured. When
|
||
|
|
not configured a fallback of 2ns is used.
|
||
|
|
When the phy-mode is set to either "rgmii-id"
|
||
|
|
or "rgmii-txid" the TX clock delay is already
|
||
|
|
provided by the PHY. In that case this
|
||
|
|
property should be set to 0ns (which disables
|
||
|
|
the TX clock delay in the MAC to prevent the
|
||
|
|
clock from going off because both PHY and MAC
|
||
|
|
are adding a delay).
|
||
|
|
Any configuration is ignored when the phy-mode
|
||
|
|
is set to "rmii".
|
||
|
|
|
||
|
|
Example for Meson6:
|
||
|
|
|
||
|
|
ethmac: ethernet@c9410000 {
|
||
|
|
compatible = "amlogic,meson6-dwmac", "snps,dwmac";
|
||
|
|
reg = <0xc9410000 0x10000
|
||
|
|
0xc1108108 0x4>;
|
||
|
|
interrupts = <0 8 1>;
|
||
|
|
interrupt-names = "macirq";
|
||
|
|
clocks = <&clk81>;
|
||
|
|
clock-names = "stmmaceth";
|
||
|
|
}
|
||
|
|
|
||
|
|
Example for GXBB:
|
||
|
|
ethmac: ethernet@c9410000 {
|
||
|
|
compatible = "amlogic,meson-gxbb-dwmac", "snps,dwmac";
|
||
|
|
reg = <0x0 0xc9410000 0x0 0x10000>,
|
||
|
|
<0x0 0xc8834540 0x0 0x8>;
|
||
|
|
interrupts = <0 8 1>;
|
||
|
|
interrupt-names = "macirq";
|
||
|
|
clocks = <&clkc CLKID_ETH>,
|
||
|
|
<&clkc CLKID_FCLK_DIV2>,
|
||
|
|
<&clkc CLKID_MPLL2>;
|
||
|
|
clock-names = "stmmaceth", "clkin0", "clkin1";
|
||
|
|
phy-mode = "rgmii";
|
||
|
|
};
|