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Date: Tue, 11 Feb 2014 20:07:32 -0800
From: Florian Fainelli <f.fainelli@...il.com>
To: <netdev@...r.kernel.org>
CC: <davem@...emloft.net>, <cernekee@...il.com>,
<devicetree@...r.kernel.org>,
Florian Fainelli <f.fainelli@...il.com>
Subject: [PATCH net-next 09/10] Documentation: add Device tree bindings for Broadcom GENET
This patch adds the Device Tree bindings for the Broadcom GENET Gigabit
Ethernet controller. A bunch of examples are provided to illustrate the
versatile aspect of the hardare.
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
.../devicetree/bindings/net/broadcom-bcmgenet.txt | 111 +++++++++++++++++++++
1 file changed, 111 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/broadcom-bcmgenet.txt
diff --git a/Documentation/devicetree/bindings/net/broadcom-bcmgenet.txt b/Documentation/devicetree/bindings/net/broadcom-bcmgenet.txt
new file mode 100644
index 0000000..93c58e9
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/broadcom-bcmgenet.txt
@@ -0,0 +1,111 @@
+* Broadcom BCM7xxx Ethernet Controller (GENET)
+
+Required properties:
+- compatible: should be "brcm,genet-v1", "brcm,genet-v2", "brcm,genet-v3",
+ "brcm,genet-v4".
+- reg: address and length of the register set for the device.
+- interrupts: interrupt for the device
+- mdio bus node: this node should always be present regarless of the PHY
+ configuration of the GENET instance
+- phy-mode: The interface between the SoC and the PHY (a string that
+ of_get_phy_mode() can understand).
+
+MDIO bus node required properties:
+
+- compatible: should be "brcm,genet-v<N>-mdio"
+- reg: address and length relative to the parent node base register address
+- address-cells: address cell for MDIO bus addressing, should be 1
+- size-cells: size of the cells for MDIO bus addressing, should be 0
+
+Optional properties:
+- phy-handle: A phandle to a phy node defining the PHY address (as the reg
+ property, a single integer), used to describe configurations where a PHY
+ (internal or external) is used.
+
+- fixed-link: When the GENET interface is connected to a MoCA hardware block
+ or when operating in a RGMII to RGMII type of connection, or when the
+ MDIO bus is voluntarily disabled, this property should be used to describe
+ the "fixed link", the property is described as follows:
+
+ fixed-link: <a b c d e> where a is emulated phy id - choose any,
+ but unique to the all specified fixed-links, b is duplex - 0 half,
+ 1 full, c is link speed - d#10/d#100/d#1000, d is pause - 0 no
+ pause, 1 pause, e is asym_pause - 0 no asym_pause, 1 asym_pause.
+
+Internal Gigabit PHY example:
+
+ethernet@...60000 {
+ phy-mode = "internal";
+ phy-handle = <&phy1>;
+ mac-address = [ 00 10 18 36 23 1a ];
+ compatible = "brcm,genet-v4";
+ #address-cells = <0x1>;
+ #size-cells = <0x1>;
+ device_type = "ethernet";
+ reg = <0xf0b60000 0xfc4c>;
+ interrupts = <0x0 0x14 0x0 0x0 0x15 0x0>;
+
+ mdio@...e14 {
+ compatible = "brcm,genet-mdio-v4";
+ #address-cells = <0x1>;
+ #size-cells = <0x0>;
+ reg = <0xb60e14 0x8>;
+
+ phy1: ethernet-phy@1 {
+ device_type = "ethernet-phy";
+ max-speed = <1000>;
+ reg = <0x1>;
+ compatible = "brcm,28nm-gphy", "ethernet-phy-ieee802.3-c22";
+ };
+ };
+};
+
+MoCA interface / MAC to MAC example:
+
+ethernet@...80000 {
+ phy-mode = "moca";
+ fixed-link = <1 0 1000 0 0>;
+ mac-address = [ 00 10 18 36 24 1a ];
+ compatible = "brcm,genet-v4";
+ #address-cells = <0x1>;
+ #size-cells = <0x1>;
+ device_type = "ethernet";
+ reg = <0xf0b80000 0xfc4c>;
+ interrupts = <0x0 0x16 0x0 0x0 0x17 0x0>;
+
+ mdio@...e14 {
+ compatible = "brcm,genet-mdio-v4";
+ #address-cells = <0x1>;
+ #size-cells = <0x0>;
+ reg = <0xb80e14 0x8>;
+ };
+};
+
+
+External MDIO-connected Gigabit PHY/switch:
+
+ethernet@...a0000 {
+ phy-mode = "rgmii";
+ phy-handle = <&phy0>;
+ mac-address = [ 00 10 18 36 26 1a ];
+ compatible = "brcm,genet-v4";
+ #address-cells = <0x1>;
+ #size-cells = <0x1>;
+ device_type = "ethernet";
+ reg = <0xf0ba0000 0xfc4c>;
+ interrupts = <0x0 0x18 0x0 0x0 0x19 0x0>;
+
+ mdio@...e14 {
+ compatible = "brcm,genet-mdio-v4";
+ #address-cells = <0x1>;
+ #size-cells = <0x0>;
+ reg = <0xba0e14 0x8>;
+
+ phy0: ethernet-phy@0 {
+ device_type = "ethernet-phy";
+ max-speed = <1000>;
+ reg = <0x0>;
+ compatible = "brcm,bcm53125", "ethernet-phy-ieee802.3-c22";
+ };
+ };
+};
--
1.8.3.2
--
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