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linux/Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt

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net: mvneta: driver for Marvell Armada 370/XP network unit This patch contains a new network driver for the network unit of the ARM Marvell Armada 370 and the Armada XP. Both SoCs use the PJ4B processor, a Marvell-developed ARM core that implements the ARMv7 instruction set. Compared to previous ARM Marvell SoCs (Kirkwood, Orion, Discovery), the network unit in Armada 370 and Armada XP is highly different. This is the reason why this new 'mvneta' driver is needed, while the older ARM Marvell SoCs use the 'mv643xx_eth' driver. Here is an overview of the most important hardware changes that require a new, specific, driver for the network unit of Armada 370/XP: - The new network unit has a completely different design and layout for the RX and TX descriptors. They are now organized as a simple array (each RX and TX queue has base address and size of this array) rather than a linked list as in the old SoCs. - The new network unit has a different RXQ and TXQ management: this management is done using special read/write counter registers, while in the Old SocS, it was done using the Ownership bit in RX and TX descriptors. - The new network unit has different interrupt registers - The new network unit way of cleaning of interrupts is not done by writing to the cause register, but by updating per-queue counters - The new network unit has different GMAC registers (link, speed, duplex configuration) and different WRR registers. - The new network unit has lots of new units like PnC (Parser and Classifier), PMT, BM (Memory Buffer Management), xPON, and more. The driver proposed in the current patch only handles the basic features. Additional hardware features will progressively be supported as needed. This code has originally been written by Rami Rosen <rosenr@marvell.com>, and then reviewed and cleaned up by Thomas Petazzoni <thomas.petazzoni@free-electrons.com>. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: David S. Miller <davem@davemloft.net>
2012-08-17 19:04:28 +08:00
* Marvell Armada 370 / Armada XP Ethernet Controller (NETA)
Required properties:
- compatible: should be "marvell,armada-370-neta".
- reg: address and length of the register set for the device.
- interrupts: interrupt for the device
- phy: A phandle to a phy node defining the PHY address (as the reg
property, a single integer).
- phy-mode: The interface between the SoC and the PHY (a string that
of_get_phy_mode() can understand)
net: mvneta: add clk support Now that the Armada 370/XP platform has gained proper integration with the clock framework, we add clk support in the Marvell Armada 370/XP Ethernet driver. Since the existing Device Tree binding that exposes a 'clock-frequency' property has never been exposed in any stable kernel release, we take the freedom of removing this property to replace it with the standard 'clocks' clock pointer property. The Device Tree binding documentation is updated accordingly. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2012-11-19 21:15:25 +08:00
- clocks: a pointer to the reference clock for this device.
net: mvneta: driver for Marvell Armada 370/XP network unit This patch contains a new network driver for the network unit of the ARM Marvell Armada 370 and the Armada XP. Both SoCs use the PJ4B processor, a Marvell-developed ARM core that implements the ARMv7 instruction set. Compared to previous ARM Marvell SoCs (Kirkwood, Orion, Discovery), the network unit in Armada 370 and Armada XP is highly different. This is the reason why this new 'mvneta' driver is needed, while the older ARM Marvell SoCs use the 'mv643xx_eth' driver. Here is an overview of the most important hardware changes that require a new, specific, driver for the network unit of Armada 370/XP: - The new network unit has a completely different design and layout for the RX and TX descriptors. They are now organized as a simple array (each RX and TX queue has base address and size of this array) rather than a linked list as in the old SoCs. - The new network unit has a different RXQ and TXQ management: this management is done using special read/write counter registers, while in the Old SocS, it was done using the Ownership bit in RX and TX descriptors. - The new network unit has different interrupt registers - The new network unit way of cleaning of interrupts is not done by writing to the cause register, but by updating per-queue counters - The new network unit has different GMAC registers (link, speed, duplex configuration) and different WRR registers. - The new network unit has lots of new units like PnC (Parser and Classifier), PMT, BM (Memory Buffer Management), xPON, and more. The driver proposed in the current patch only handles the basic features. Additional hardware features will progressively be supported as needed. This code has originally been written by Rami Rosen <rosenr@marvell.com>, and then reviewed and cleaned up by Thomas Petazzoni <thomas.petazzoni@free-electrons.com>. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: David S. Miller <davem@davemloft.net>
2012-08-17 19:04:28 +08:00
Example:
ethernet@d0070000 {
compatible = "marvell,armada-370-neta";
reg = <0xd0070000 0x2500>;
interrupts = <8>;
net: mvneta: add clk support Now that the Armada 370/XP platform has gained proper integration with the clock framework, we add clk support in the Marvell Armada 370/XP Ethernet driver. Since the existing Device Tree binding that exposes a 'clock-frequency' property has never been exposed in any stable kernel release, we take the freedom of removing this property to replace it with the standard 'clocks' clock pointer property. The Device Tree binding documentation is updated accordingly. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2012-11-19 21:15:25 +08:00
clocks = <&gate_clk 4>;
net: mvneta: driver for Marvell Armada 370/XP network unit This patch contains a new network driver for the network unit of the ARM Marvell Armada 370 and the Armada XP. Both SoCs use the PJ4B processor, a Marvell-developed ARM core that implements the ARMv7 instruction set. Compared to previous ARM Marvell SoCs (Kirkwood, Orion, Discovery), the network unit in Armada 370 and Armada XP is highly different. This is the reason why this new 'mvneta' driver is needed, while the older ARM Marvell SoCs use the 'mv643xx_eth' driver. Here is an overview of the most important hardware changes that require a new, specific, driver for the network unit of Armada 370/XP: - The new network unit has a completely different design and layout for the RX and TX descriptors. They are now organized as a simple array (each RX and TX queue has base address and size of this array) rather than a linked list as in the old SoCs. - The new network unit has a different RXQ and TXQ management: this management is done using special read/write counter registers, while in the Old SocS, it was done using the Ownership bit in RX and TX descriptors. - The new network unit has different interrupt registers - The new network unit way of cleaning of interrupts is not done by writing to the cause register, but by updating per-queue counters - The new network unit has different GMAC registers (link, speed, duplex configuration) and different WRR registers. - The new network unit has lots of new units like PnC (Parser and Classifier), PMT, BM (Memory Buffer Management), xPON, and more. The driver proposed in the current patch only handles the basic features. Additional hardware features will progressively be supported as needed. This code has originally been written by Rami Rosen <rosenr@marvell.com>, and then reviewed and cleaned up by Thomas Petazzoni <thomas.petazzoni@free-electrons.com>. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: David S. Miller <davem@davemloft.net>
2012-08-17 19:04:28 +08:00
status = "okay";
phy = <&phy0>;
phy-mode = "rgmii-id";
};