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Miller" , Kevin Hilman Cc: Jerome Brunet , netdev@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Rob Herring Subject: [PATCH net-next v3 1/4] dt-bindings: net: phy: add g12a mdio mux documentation Date: Thu, 4 Apr 2019 15:11:44 +0200 Message-Id: <20190404131147.31156-2-jbrunet@baylibre.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190404131147.31156-1-jbrunet@baylibre.com> References: <20190404131147.31156-1-jbrunet@baylibre.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add documentation for the device tree bindings of the MDIO mux of Amlogic g12a SoC family Reviewed-by: Rob Herring Signed-off-by: Jerome Brunet --- .../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..3a96cbed9294 --- /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@4c000 { + 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 { + compatible = "ethernet-phy-id0180.3301", + "ethernet-phy-ieee802.3-c22"; + interrupts = ; + reg = <8>; + max-speed = <100>; + }; + }; +}; -- 2.20.1