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Commit 6aee1597 authored by Martin Blumenstingl's avatar Martin Blumenstingl Committed by Kevin Hilman
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net: dt-bindings: Document the new Meson8b and GXBB DWMAC bindings 



This patch adds the documentation for the DWMAC ethernet controller
found in Amlogic Meson 8b (S805) and GXBB (S905) SoCs.
The main difference between the Meson6 glue is that different registers
(with different layout) are used.

Signed-off-by: default avatarMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarKevin Hilman <khilman@baylibre.com>
parent ad855eae

Documentation/devicetree/bindings/net/meson-dwmac.txt

+37 −8
Original line number Diff line number Diff line 
* Amlogic Meson DWMAC Ethernet controller



The device inherits all the properties of the dwmac/stmmac devices

described in the file net/stmmac.txt with the following changes.

described in the file stmmac.txt in the current directory with the

following changes.



Required properties:

Required properties on all platforms:



- compatible: should be "amlogic,meson6-dwmac" along with "snps,dwmac"

	      and any applicable more detailed version number

	      described in net/stmmac.txt

- compatible:	Depending on the platform this should be one of:

			- "amlogic,meson6-dwmac"

			- "amlogic,meson8b-dwmac"

			- "amlogic,meson-gxbb-dwmac"

		Additionally "snps,dwmac" and any applicable more

		detailed version number described in net/stmmac.txt

		should be used.



- reg: should contain a register range for the dwmac controller and

       another one for the Amlogic specific configuration

- reg:	The first register range should be the one of the DWMAC

	controller. The second range is is for the Amlogic specific

	configuration (for example the PRG_ETHERNET register range

	on Meson8b and newer)



Example:

Required properties on Meson8b and newer:

- clock-names:	Should contain the following:

		- "stmmaceth" - see stmmac.txt

		- "clkin0" - first parent clock of the internal mux

		- "clkin1" - second parent clock of the internal mux





Example for Meson6:



	ethmac: ethernet@c9410000 {

		compatible = "amlogic,meson6-dwmac", "snps,dwmac";
@@ -23,3 +37,18 @@ Example: 
		clocks = <&clk81>;

		clock-names = "stmmaceth";

	}



Example for GXBB:

	ethmac: ethernet@c9410000 {

		compatible = "amlogic,meson-gxbb-dwmac", "snps,dwmac";

		reg = <0x0 0xc9410000 0x0 0x10000>,

			<0x0 0xc8834540 0x0 0x8>;

		interrupts = <0 8 1>;

		interrupt-names = "macirq";

		clocks = <&clkc CLKID_ETH>,

				<&clkc CLKID_FCLK_DIV2>,

				<&clkc CLKID_MPLL2>;

		clock-names = "stmmaceth", "clkin0", "clkin1";

		phy-mode = "rgmii";

		status = "disabled";

	};