Add DT binding doc for iProc Shared MDIO Controller which populate all masters to Shared MDIO framework. Signed-off-by: Pramod Kumar <pramod.kumar@xxxxxxxxxxxx> Reviewed-by: Ray Jui <ray.jui@xxxxxxxxxxxx> Reviewed-by: Scott Branden <scott.branden@xxxxxxxxxxxx> --- .../bindings/bus/brcm,iproc-shared-mdio.txt | 76 ++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 Documentation/devicetree/bindings/bus/brcm,iproc-shared-mdio.txt diff --git a/Documentation/devicetree/bindings/bus/brcm,iproc-shared-mdio.txt b/Documentation/devicetree/bindings/bus/brcm,iproc-shared-mdio.txt new file mode 100644 index 0000000..f455f3d --- /dev/null +++ b/Documentation/devicetree/bindings/bus/brcm,iproc-shared-mdio.txt @@ -0,0 +1,76 @@ +Broadcom iProc Shared MDIO Controller + +Required properties: +- compatible: + "brcm,iproc-shared-mdio" for shared MDIO controller. +- reg: specifies the base physical address and size of the registers +- reg-names: should be "mdio" +- #address-cells: must be 1. +- #size-cells: must be 0. + +optional: +child nodes: Masters are represented as a child node of shared MDIO controller +and all the PHYs handled by this master are represented as its child node. + +Master nodes properties are defined as- + +Required properties: +- compatible: Used to match driver of this PHY. +- reg: MDIO master ID. +- #address-cells: must be 1. +- #size-cells: must be 0. + +optional: +-brcm,phy-internal: if presents, PHYs are internal. Absence shows phy is +external. +-brcm,is-c45: if presents, Controller uses Clause-45 to issue MDIO transaction. +else Controller uses Clause-22 for transactions. + +PHY nodes are represented as the child node of Master. Child nodes properties +are defined as- + +Required properties: +-reg: phy id of attached PHY. + +optional: +There could be additional properties required to configure the specific phy like +phy-mode in case of gpphy node below. These should be defined here and used by +respective drivers. + +Example: +iproc_mdio: iproc_mdio@663f0000 { + compatible = "brcm,iproc-shared-mdio"; + reg = <0x6602023c 0x14>; + reg-names = "mdio"; + #address-cells = <1>; + #size-cells = <0>; + + sata-master@6 { + compatible = "brcm,iproc-ns2-sata-phy"; + reg = <0x6>; + #address-cells = <1>; + #size-cells = <0>; + brcm,phy-internal; + + sata_phy0: sata-phy@1 { + reg = <0x1>; + #phy-cells = <0>; + }; + + sata_phy1: sata-phy@2 { + reg = <0x2>; + #phy-cells = <0>; + }; + }; + + eth-master@0 { + compatible = "brcm,iproc-mdio-master-eth"; + reg = <0x0>; + #address-cells = <1>; + #size-cells = <0>; + gphy0: eth-phy@10 { + reg = <0x10>; + phy-mode = "mii"; + }; + }; +}; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html