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STMicroelectronics STi MIPHY365x PHY binding ============================================ This binding describes a miphy device that is used to control PHY hardware for SATA and PCIe. Required properties (controller (parent) node): - compatible : Should be "st,miphy365x-phy" - st,syscfg : Phandle / integer array property. Phandle of sysconfig group containing the miphy registers and integer array should contain an entry for each port sub-node, specifying the control register offset inside the sysconfig group. Required nodes : A sub-node is required for each channel the controller provides. Address range information including the usual 'reg' and 'reg-names' properties are used inside these nodes to describe the controller's topology. These nodes are translated by the driver's .xlate() function. Required properties (port (child) node): - #phy-cells : Should be 1 (See second example) Cell after port phandle is device type from: - PHY_TYPE_SATA - PHY_TYPE_PCI - reg : Address and length of register sets for each device in "reg-names" - reg-names : The names of the register addresses corresponding to the registers filled in "reg": - sata: For SATA devices - pcie: For PCIe devices Optional properties (port (child) node): - st,sata-gen : Generation of locally attached SATA IP. Expected values are {1,2,3). If not supplied generation 1 hardware will be expected - st,pcie-tx-pol-inv : Bool property to invert the polarity PCIe Tx (Txn/Txp) - st,sata-tx-pol-inv : Bool property to invert the polarity SATA Tx (Txn/Txp) Example: miphy365x_phy: miphy365x@fe382000 { compatible = "st,miphy365x-phy"; st,syscfg = <&syscfg_rear 0x824 0x828>; #address-cells = <1>; #size-cells = <1>; ranges; phy_port0: port@fe382000 { reg = <0xfe382000 0x100>, <0xfe394000 0x100>; reg-names = "sata", "pcie"; #phy-cells = <1>; st,sata-gen = <3>; }; phy_port1: port@fe38a000 { reg = <0xfe38a000 0x100>, <0xfe804000 0x100>;; reg-names = "sata", "pcie", "syscfg"; #phy-cells = <1>; st,pcie-tx-pol-inv; }; }; Specifying phy control of devices ================================= Device nodes should specify the configuration required in their "phys" property, containing a phandle to the phy port node and a device type. Example: #include <dt-bindings/phy/phy.h> sata0: sata@fe380000 { ... phys = <&phy_port0 PHY_TYPE_SATA>; ... }; |