tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/net/thead,th1520-gmac.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: T-HEAD TH1520 GMAC Ethernet controller
8
9maintainers:
10 - Drew Fustini <dfustini@tenstorrent.com>
11
12description: |
13 The TH1520 GMAC is described in the TH1520 Peripheral Interface User Manual
14 https://git.beagleboard.org/beaglev-ahead/beaglev-ahead/-/tree/main/docs
15
16 Features include
17 - Compliant with IEEE802.3 Specification
18 - IEEE 1588-2008 standard for precision networked clock synchronization
19 - Supports 10/100/1000Mbps data transfer rate
20 - Supports RGMII/MII interface
21 - Preamble and start of frame data (SFD) insertion in Transmit path
22 - Preamble and SFD deletion in the Receive path
23 - Automatic CRC and pad generation options for receive frames
24 - MDIO master interface for PHY device configuration and management
25
26 The GMAC Registers consists of two parts
27 - APB registers are used to configure clock frequency/clock enable/clock
28 direction/PHY interface type.
29 - AHB registers are use to configure GMAC core (DesignWare Core part).
30 GMAC core register consists of DMA registers and GMAC registers.
31
32select:
33 properties:
34 compatible:
35 contains:
36 enum:
37 - thead,th1520-gmac
38 required:
39 - compatible
40
41allOf:
42 - $ref: snps,dwmac.yaml#
43
44properties:
45 compatible:
46 items:
47 - enum:
48 - thead,th1520-gmac
49 - const: snps,dwmac-3.70a
50
51 reg:
52 items:
53 - description: DesignWare GMAC IP core registers
54 - description: GMAC APB registers
55
56 reg-names:
57 items:
58 - const: dwmac
59 - const: apb
60
61 clocks:
62 items:
63 - description: GMAC main clock
64 - description: Peripheral registers interface clock
65 - description: APB glue registers interface clock
66
67 clock-names:
68 items:
69 - const: stmmaceth
70 - const: pclk
71 - const: apb
72
73 interrupts:
74 items:
75 - description: Combined signal for various interrupt events
76
77 interrupt-names:
78 items:
79 - const: macirq
80
81required:
82 - clocks
83 - clock-names
84
85unevaluatedProperties: false
86
87examples:
88 - |
89 gmac0: ethernet@e7070000 {
90 compatible = "thead,th1520-gmac", "snps,dwmac-3.70a";
91 reg = <0xe7070000 0x2000>, <0xec003000 0x1000>;
92 reg-names = "dwmac", "apb";
93 clocks = <&clk 1>, <&clk 2>, <&clk 3>;
94 clock-names = "stmmaceth", "pclk", "apb";
95 interrupts = <66>;
96 interrupt-names = "macirq";
97 phy-mode = "rgmii-id";
98 snps,fixed-burst;
99 snps,axi-config = <&stmmac_axi_setup>;
100 snps,pbl = <32>;
101 phy-handle = <&phy0>;
102
103 mdio {
104 #address-cells = <1>;
105 #size-cells = <0>;
106 compatible = "snps,dwmac-mdio";
107
108 phy0: ethernet-phy@0 {
109 reg = <0>;
110 };
111 };
112 };