1 Marvell Orion/Discovery ethernet controller 1 Marvell Orion/Discovery ethernet controller
2 ============================================= 2 =============================================
3 3
4 The Marvell Discovery ethernet controller can 4 The Marvell Discovery ethernet controller can be found on Marvell Orion SoCs
5 (Kirkwood, Dove, Orion5x, and Discovery Innova 5 (Kirkwood, Dove, Orion5x, and Discovery Innovation) and as part of Marvell
6 Discovery system controller chips (mv64[345]60 6 Discovery system controller chips (mv64[345]60).
7 7
8 The Discovery ethernet controller is described 8 The Discovery ethernet controller is described with two levels of nodes. The
9 first level describes the ethernet controller 9 first level describes the ethernet controller itself and the second level
10 describes up to 3 ethernet port nodes within t 10 describes up to 3 ethernet port nodes within that controller. The reason for
11 the multiple levels is that the port registers 11 the multiple levels is that the port registers are interleaved within a single
12 set of controller registers. Each port node de 12 set of controller registers. Each port node describes port-specific properties.
13 13
14 Note: The above separation is only true for Di 14 Note: The above separation is only true for Discovery system controllers.
15 For Orion SoCs we stick to the separation, alt 15 For Orion SoCs we stick to the separation, although there each controller has
16 only one port associated. Multiple ports are i 16 only one port associated. Multiple ports are implemented as multiple single-port
17 controllers. As Kirkwood has some issues with 17 controllers. As Kirkwood has some issues with proper initialization after reset,
18 an extra compatible string is added for it. 18 an extra compatible string is added for it.
19 19
20 * Ethernet controller node 20 * Ethernet controller node
21 21
22 Required controller properties: 22 Required controller properties:
23 - #address-cells: shall be 1. 23 - #address-cells: shall be 1.
24 - #size-cells: shall be 0. 24 - #size-cells: shall be 0.
25 - compatible: shall be one of "marvell,orion- 25 - compatible: shall be one of "marvell,orion-eth", "marvell,kirkwood-eth".
26 - reg: address and length of the controller r 26 - reg: address and length of the controller registers.
27 27
28 Optional controller properties: 28 Optional controller properties:
29 - clocks: phandle reference to the controller 29 - clocks: phandle reference to the controller clock.
30 - marvell,tx-checksum-limit: max tx packet si 30 - marvell,tx-checksum-limit: max tx packet size for hardware checksum.
31 31
32 * Ethernet port node 32 * Ethernet port node
33 33
34 Required port properties: 34 Required port properties:
35 - compatible: shall be one of "marvell,orion- 35 - compatible: shall be one of "marvell,orion-eth-port",
36 "marvell,kirkwood-eth-port". 36 "marvell,kirkwood-eth-port".
37 - reg: port number relative to ethernet contr 37 - reg: port number relative to ethernet controller, shall be 0, 1, or 2.
38 - interrupts: port interrupt. 38 - interrupts: port interrupt.
39 - local-mac-address: See ethernet.txt file in 39 - local-mac-address: See ethernet.txt file in the same directory.
40 40
41 Optional port properties: 41 Optional port properties:
42 - marvell,tx-queue-size: size of the transmit 42 - marvell,tx-queue-size: size of the transmit ring buffer.
43 - marvell,tx-sram-addr: address of transmit d 43 - marvell,tx-sram-addr: address of transmit descriptor buffer located in SRAM.
44 - marvell,tx-sram-size: size of transmit desc 44 - marvell,tx-sram-size: size of transmit descriptor buffer located in SRAM.
45 - marvell,rx-queue-size: size of the receive 45 - marvell,rx-queue-size: size of the receive ring buffer.
46 - marvell,rx-sram-addr: address of receive de 46 - marvell,rx-sram-addr: address of receive descriptor buffer located in SRAM.
47 - marvell,rx-sram-size: size of receive descr 47 - marvell,rx-sram-size: size of receive descriptor buffer located in SRAM.
48 48
49 and 49 and
50 50
51 - phy-handle: See ethernet.txt file in the sa 51 - phy-handle: See ethernet.txt file in the same directory.
52 - phy-mode: See ethernet.txt file in the same <<
53 52
54 or 53 or
55 54
56 - speed: port speed if no PHY connected. 55 - speed: port speed if no PHY connected.
57 - duplex: port mode if no PHY connected. 56 - duplex: port mode if no PHY connected.
58 57
59 * Node example: 58 * Node example:
60 59
61 mdio-bus { 60 mdio-bus {
62 ... 61 ...
63 ethphy: ethernet-phy@8 { 62 ethphy: ethernet-phy@8 {
64 ... 63 ...
65 }; 64 };
66 }; 65 };
67 66
68 eth: ethernet-controller@72000 { 67 eth: ethernet-controller@72000 {
69 compatible = "marvell,orion-eth"; 68 compatible = "marvell,orion-eth";
70 #address-cells = <1>; 69 #address-cells = <1>;
71 #size-cells = <0>; 70 #size-cells = <0>;
72 reg = <0x72000 0x2000>; 71 reg = <0x72000 0x2000>;
73 clocks = <&gate_clk 2>; 72 clocks = <&gate_clk 2>;
74 marvell,tx-checksum-limit = <1600>; 73 marvell,tx-checksum-limit = <1600>;
75 74
76 ethernet@0 { 75 ethernet@0 {
77 compatible = "marvell,orion-et 76 compatible = "marvell,orion-eth-port";
78 reg = <0>; 77 reg = <0>;
79 interrupts = <29>; 78 interrupts = <29>;
80 phy-handle = <ðphy>; 79 phy-handle = <ðphy>;
81 local-mac-address = [00 00 00 80 local-mac-address = [00 00 00 00 00 00];
82 }; 81 };
83 }; 82 };
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