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-APM X-Gene SoC Ethernet nodes
-
-Ethernet nodes are defined to describe on-chip ethernet interfaces in
-APM X-Gene SoC.
-
-Required properties for all the ethernet interfaces:
-- compatible: Should state binding information from the following list,
- - "apm,xgene-enet": RGMII based 1G interface
- - "apm,xgene1-sgenet": SGMII based 1G interface
- - "apm,xgene1-xgenet": XFI based 10G interface
-- reg: Address and length of the register set for the device. It contains the
- information of registers in the same order as described by reg-names
-- reg-names: Should contain the register set names
- - "enet_csr": Ethernet control and status register address space
- - "ring_csr": Descriptor ring control and status register address space
- - "ring_cmd": Descriptor ring command register address space
-- interrupts: Two interrupt specifiers can be specified.
- - First is the Rx interrupt. This irq is mandatory.
- - Second is the Tx completion interrupt.
- This is supported only on SGMII based 1GbE and 10GbE interfaces.
-- channel: Ethernet to CPU, start channel (prefetch buffer) number
- - Must map to the first irq and irqs must be sequential
-- port-id: Port number (0 or 1)
-- clocks: Reference to the clock entry.
-- local-mac-address: MAC address assigned to this device
-- phy-connection-type: Interface type between ethernet device and PHY device
-
-Required properties for ethernet interfaces that have external PHY:
-- phy-handle: Reference to a PHY node connected to this device
-
-- mdio: Device tree subnode with the following required properties:
- - compatible: Must be "apm,xgene-mdio".
- - #address-cells: Must be <1>.
- - #size-cells: Must be <0>.
-
- For the phy on the mdio bus, there must be a node with the following fields:
- - compatible: PHY identifier. Please refer ./phy.txt for the format.
- - reg: The ID number for the phy.
-
-Optional properties:
-- status: Should be "ok" or "disabled" for enabled/disabled. Default is "ok".
-- tx-delay: Delay value for RGMII bridge TX clock.
- Valid values are between 0 to 7, that maps to
- 417, 717, 1020, 1321, 1611, 1913, 2215, 2514 ps
- Default value is 4, which corresponds to 1611 ps
-- rx-delay: Delay value for RGMII bridge RX clock.
- Valid values are between 0 to 7, that maps to
- 273, 589, 899, 1222, 1480, 1806, 2147, 2464 ps
- Default value is 2, which corresponds to 899 ps
-- rxlos-gpios: Input gpio from SFP+ module to indicate availability of
- incoming signal.
-
-
-Example:
- menetclk: menetclk {
- compatible = "apm,xgene-device-clock";
- clock-output-names = "menetclk";
- status = "ok";
- };
-
- menet: ethernet@17020000 {
- compatible = "apm,xgene-enet";
- status = "disabled";
- reg = <0x0 0x17020000 0x0 0xd100>,
- <0x0 0x17030000 0x0 0x400>,
- <0x0 0x10000000 0x0 0x200>;
- reg-names = "enet_csr", "ring_csr", "ring_cmd";
- interrupts = <0x0 0x3c 0x4>;
- port-id = <0>;
- clocks = <&menetclk 0>;
- local-mac-address = [00 01 73 00 00 01];
- phy-connection-type = "rgmii";
- phy-handle = <&menetphy>;
- mdio {
- compatible = "apm,xgene-mdio";
- #address-cells = <1>;
- #size-cells = <0>;
- menetphy: menetphy@3 {
- compatible = "ethernet-phy-id001c.c915";
- reg = <0x3>;
- };
-
- };
- };
-
-/* Board-specific peripheral configurations */
-&menet {
- tx-delay = <4>;
- rx-delay = <2>;
- status = "ok";
-};