summaryrefslogtreecommitdiffstats
path: root/target/linux/mediatek/patches-4.4/0048-net-next-mediatek-document-MediaTek-SoC-ethernet-bin.patch
blob: 8a8d7123a58ee407d454f1f49e715ce80d0a303f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
From b79b0519fb67c22cbed341c5e9dca5ad0aa4d15c Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Wed, 2 Mar 2016 07:18:52 +0100
Subject: [PATCH 48/81] net-next: mediatek: document MediaTek SoC ethernet
 binding

This adds the binding documentation for the MediaTek Ethernet
controller.

Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Rob Herring <robh@kernel.org>
Cc: devicetree@vger.kernel.org
---
 .../devicetree/bindings/net/mediatek-net.txt       |   77 ++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/mediatek-net.txt

--- /dev/null
+++ b/Documentation/devicetree/bindings/net/mediatek-net.txt
@@ -0,0 +1,77 @@
+MediaTek Frame Engine Ethernet controller
+=========================================
+
+The frame engine ethernet controller can be found on MediaTek SoCs. These SoCs
+have dual GMAC each represented by a child node..
+
+* Ethernet controller node
+
+Required properties:
+- compatible: Should be "mediatek,mt7623-eth"
+- reg: Address and length of the register set for the device
+- interrupts: Should contain the frame engines interrupt
+- clocks: the clock used by the core
+- clock-names: the names of the clock listed in the clocks property. These are
+	"ethif", "esw", "gp2", "gp1"
+- power-domains: phandle to the power domain that the ethernet is part of
+- resets: Should contain a phandle to the ethsys reset signal
+- reset-names: Should contain the reset signal name "eth"
+- mediatek,ethsys: phandle to the syscon node that handles the port setup
+- mediatek,pctl: phandle to the syscon node that handles the ports slew rate
+	and driver current
+
+Optional properties:
+- interrupt-parent: Should be the phandle for the interrupt controller
+  that services interrupts for this device
+
+
+* Ethernet MAC node
+
+Required properties:
+- compatible: Should be "mediatek,eth-mac"
+- reg: The number of the MAC
+- phy-handle: see ethernet.txt file in the same directory.
+
+Example:
+
+eth: ethernet@1b100000 {
+	compatible = "mediatek,mt7623-eth";
+	reg = <0 0x1b100000 0 0x20000>;
+	clocks = <&topckgen CLK_TOP_ETHIF_SEL>,
+		 <&ethsys CLK_ETHSYS_ESW>,
+		 <&ethsys CLK_ETHSYS_GP2>,
+		 <&ethsys CLK_ETHSYS_GP1>;
+	clock-names = "ethif", "esw", "gp2", "gp1";
+	interrupts = <GIC_SPI 200 IRQ_TYPE_LEVEL_LOW>;
+	power-domains = <&scpsys MT2701_POWER_DOMAIN_ETH>;
+	resets = <&ethsys MT2701_ETHSYS_ETH_RST>;
+	reset-names = "eth";
+	mediatek,ethsys = <&ethsys>;
+	mediatek,pctl = <&syscfg_pctl_a>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	gmac1: mac@0 {
+		compatible = "mediatek,eth-mac";
+		reg = <0>;
+		phy-handle = <&phy0>;
+	};
+
+	gmac2: mac@1 {
+		compatible = "mediatek,eth-mac";
+		reg = <1>;
+		phy-handle = <&phy1>;
+	};
+
+	mdio-bus {
+		phy0: ethernet-phy@0 {
+			reg = <0>;
+			phy-mode = "rgmii";
+		};
+
+		phy1: ethernet-phy@1 {
+			reg = <1>;
+			phy-mode = "rgmii";
+		};
+	};
+};