linux-kernel - Re: [PATCH net-next 1/3] dt-bindings: net: phy: add g12a mdio mux documentation

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Date:   Thu, 28 Mar 2019 10:57:02 -0500
From:   Rob Herring <robh@...nel.org>
To:     Jerome Brunet <jbrunet@...libre.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Kevin Hilman <khilman@...libre.com>, netdev@...r.kernel.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH net-next 1/3] dt-bindings: net: phy: add g12a mdio mux
 documentation

On Thu, Mar 14, 2019 at 03:01:33PM +0100, Jerome Brunet wrote:
> Add documentation for the device tree bindings of the MDIO mux of Amlogic
> g12a SoC family
> 
> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
> ---
>  .../bindings/net/mdio-mux-meson-g12a.txt      | 48 +++++++++++++++++++
>  1 file changed, 48 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/mdio-mux-meson-g12a.txt
> 
> diff --git a/Documentation/devicetree/bindings/net/mdio-mux-meson-g12a.txt b/Documentation/devicetree/bindings/net/mdio-mux-meson-g12a.txt
> new file mode 100644
> index 000000000000..e738bba6a9de
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/mdio-mux-meson-g12a.txt
> @@ -0,0 +1,48 @@
> +Properties for the MDIO bus multiplexer/glue of Amlogic G12a SoC family.
> +
> +This is a special case of a MDIO bus multiplexer. It allows to choose between
> +the internal mdio bus leading to the embedded 10/100 PHY or the external
> +MDIO bus.
> +
> +Required properties in addition to the generic multiplexer properties:
> +- compatible : amlogic,g12a-mdio-mux
> +- reg: physical address and length of the multiplexer/glue registers
> +- clocks: list of clock phandle, one for each entry clock-names.
> +- clock-names: should contain the following:
> +  * "pclk"   : peripheral clock.
> +  * "clkin0" : platform crytal
> +  * "clkin1" : SoC 50MHz MPLL
> +
> +Example :
> +
> +mdio-mux: mdio-multiplexer@...00 {
> +	compatible = "amlogic,g12a-mdio-mux";
> +	reg = <0x0 0x4c000 0x0 0xa4>;
> +	clocks = <&clkc CLKID_ETH_PHY>,
> +		 <&xtal>,
> +		 <&clkc CLKID_MPLL_5OM>;
> +	clock-names = "pclk", "clkin0", "clkin1";
> +	mdio-parent-bus = <&mdio0>;
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +
> +	ext_mdio: mdio@0 {
> +		reg = <0>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +	};
> +
> +	int_mdio: mdio@1 {
> +		reg = <1>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		internal_ephy: ethernet_phy@8 {

ethernet-phy@8

Otherwise,

Reviewed-by: Rob Herring <robh@...nel.org>

> +			compatible = "ethernet-phy-id0180.3301",
> +				     "ethernet-phy-ieee802.3-c22";
> +			interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +			reg = <8>;
> +			max-speed = <100>;
> +		};
> +	};
> +};
> -- 
> 2.20.1
>