Documentation/devicetree/bindings/phy/brcm-sata-phy.txt

   1 * Broadcom SATA3 PHY
   2
   3 Required properties:
   4 - compatible: should be one or more of
   5      "brcm,bcm7425-sata-phy"
   6      "brcm,bcm7445-sata-phy"
   7      "brcm,iproc-ns2-sata-phy"
   8      "brcm,iproc-nsp-sata-phy"
   9      "brcm,phy-sata3"
  10      "brcm,iproc-sr-sata-phy"
  11 - address-cells: should be 1
  12 - size-cells: should be 0
  13 - reg: register ranges for the PHY PCB interface
  14 - reg-names: should be "phy" and "phy-ctrl"
  15      The "phy-ctrl" registers are only required for
  16      "brcm,iproc-ns2-sata-phy" and "brcm,iproc-sr-sata-phy".
  17
  18 Sub-nodes:
  19   Each port's PHY should be represented as a sub-node.
  20
  21 Sub-nodes required properties:
  22 - reg: the PHY number
  23 - phy-cells: generic PHY binding; must be 0
  24
  25 Sub-nodes optional properties:
  26 - brcm,enable-ssc: use spread spectrum clocking (SSC) on this port
  27      This property is not applicable for "brcm,iproc-ns2-sata-phy",
  28      "brcm,iproc-nsp-sata-phy" and "brcm,iproc-sr-sata-phy".
  29
  30 - brcm,rxaeq-mode: string that indicates the desired RX equalizer
  31   mode, possible values are:
  32         "off" (equivalent to not specifying the property)
  33         "auto"
  34         "manual" (brcm,rxaeq-value is used in that case)
  35
  36 - brcm,rxaeq-value: when 'rxaeq-mode' is set to "manual", provides the RX
  37   equalizer value that should be used. Allowed range is 0..63.
  38
  39 Example
  40         sata-phy@f0458100 {
  41                 compatible = "brcm,bcm7445-sata-phy", "brcm,phy-sata3";
  42                 reg = <0xf0458100 0x1e00>, <0xf045804c 0x10>;
  43                 reg-names = "phy";
  44                 #address-cells = <1>;
  45                 #size-cells = <0>;
  46
  47                 sata-phy@0 {
  48                         reg = <0>;
  49                         #phy-cells = <0>;
  50                 };
  51
  52                 sata-phy@1 {
  53                         reg = <1>;
  54                         #phy-cells = <0>;
  55                 };
  56         };