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Commit c156633f authored by Sergei Shtylyov's avatar Sergei Shtylyov Committed by David S. Miller
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Renesas Ethernet AVB driver proper 



Ethernet AVB includes an Gigabit Ethernet controller (E-MAC) that is basically
compatible with SuperH Gigabit Ethernet E-MAC.  Ethernet AVB has  a  dedicated
direct memory access controller (AVB-DMAC) that is a new design compared to the
SuperH E-DMAC. The AVB-DMAC is compliant with 3 standards formulated for IEEE
802.1BA: IEEE 802.1AS timing and synchronization protocol, IEEE 802.1Qav real-
time transfer, and the IEEE 802.1Qat stream reservation protocol.

The  driver only supports device tree probing, so the binding document is
included in this patch.

Based on the original patches by Mitsuhiro Kimura.

Signed-off-by: default avatarMitsuhiro Kimura <mitsuhiro.kimura.kc@renesas.com>
Signed-off-by: default avatarSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2b0a8c9e

Documentation/devicetree/bindings/net/renesas,ravb.txt

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* Renesas Electronics Ethernet AVB



This file provides information on what the device node for the Ethernet AVB

interface contains.



Required properties:

- compatible: "renesas,etheravb-r8a7790" if the device is a part of R8A7790 SoC.

	      "renesas,etheravb-r8a7794" if the device is a part of R8A7794 SoC.

- reg: offset and length of (1) the register block and (2) the stream buffer.

- interrupts: interrupt specifier for the sole interrupt.

- phy-mode: see ethernet.txt file in the same directory.

- phy-handle: see ethernet.txt file in the same directory.

- #address-cells: number of address cells for the MDIO bus, must be equal to 1.

- #size-cells: number of size cells on the MDIO bus, must be equal to 0.

- clocks: clock phandle and specifier pair.

- pinctrl-0: phandle, referring to a default pin configuration node.



Optional properties:

- interrupt-parent: the phandle for the interrupt controller that services

		    interrupts for this device.

- pinctrl-names: pin configuration state name ("default").

- renesas,no-ether-link: boolean, specify when a board does not provide a proper

			 AVB_LINK signal.

- renesas,ether-link-active-low: boolean, specify when the AVB_LINK signal is

				 active-low instead of normal active-high.



Example:



	ethernet@e6800000 {

		compatible = "renesas,etheravb-r8a7790";

		reg = <0 0xe6800000 0 0x800>, <0 0xee0e8000 0 0x4000>;

		interrupt-parent = <&gic>;

		interrupts = <0 163 IRQ_TYPE_LEVEL_HIGH>;

		clocks = <&mstp8_clks R8A7790_CLK_ETHERAVB>;

		phy-mode = "rmii";

		phy-handle = <&phy0>;

		pinctrl-0 = <&ether_pins>;

		pinctrl-names = "default";

		renesas,no-ether-link;

		#address-cells = <1>;

		#size-cells = <0>;



		phy0: ethernet-phy@0 {

			reg = <0>;

			interrupt-parent = <&gpio2>;

			interrupts = <15 IRQ_TYPE_LEVEL_LOW>;

		};

	};

drivers/net/ethernet/renesas/Kconfig

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@@ -2,6 +2,21 @@ 
# Renesas device configuration

#



config NET_VENDOR_RENESAS

	bool "Renesas devices"

	default y

	---help---

	  If you have a network (Ethernet) card belonging to this class, say Y

	  and read the Ethernet-HOWTO, available from

	  <http://www.tldp.org/docs.html#howto>.



	  Note that the answer to this question doesn't directly affect the

	  kernel: saying N will just cause the configurator to skip all

	  the questions about Renesas devices. If you say Y, you will be asked

	  for your specific device in the following questions.



if NET_VENDOR_RENESAS



config SH_ETH

	tristate "Renesas SuperH Ethernet support"

	depends on HAS_DMA
@@ -15,3 +30,19 @@ config SH_ETH 
	  This driver supporting CPUs are:

		- SH7619, SH7710, SH7712, SH7724, SH7734, SH7763, SH7757,

		  R8A7740, R8A777x and R8A779x.



config RAVB

	tristate "Renesas Ethernet AVB support"

	depends on HAS_DMA

	depends on ARCH_SHMOBILE || COMPILE_TEST

	select CRC32

	select MII

	select MDIO_BITBANG

	select PHYLIB

	select PTP_1588_CLOCK

	help

	  Renesas Ethernet AVB device driver.

	  This driver supports the following SoCs:

		- R8A779x.



endif # NET_VENDOR_RENESAS

drivers/net/ethernet/renesas/Makefile

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#



obj-$(CONFIG_SH_ETH) += sh_eth.o

obj-$(CONFIG_RAVB) += ravb.o