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      "brcm,bcm63138-sata-phy"
  12 - address-cells: should be 1
  13 - size-cells: should be 0
  14 - reg: register ranges for the PHY PCB interface
  15 - reg-names: should be "phy" and "phy-ctrl"
  16      The "phy-ctrl" registers are only required for
  17      "brcm,iproc-ns2-sata-phy" and "brcm,iproc-sr-sata-phy".
  18
  19 Sub-nodes:
  20   Each port's PHY should be represented as a sub-node.
  21
  22 Sub-nodes required properties:
  23 - reg: the PHY number
  24 - phy-cells: generic PHY binding; must be 0
  25
  26 Sub-nodes optional properties:
  27 - brcm,enable-ssc: use spread spectrum clocking (SSC) on this port
  28      This property is not applicable for "brcm,iproc-ns2-sata-phy",
  29      "brcm,iproc-nsp-sata-phy" and "brcm,iproc-sr-sata-phy".
  30
  31 - brcm,rxaeq-mode: string that indicates the desired RX equalizer
  32   mode, possible values are:
  33         "off" (equivalent to not specifying the property)
  34         "auto"
  35         "manual" (brcm,rxaeq-value is used in that case)
  36
  37 - brcm,rxaeq-value: when 'rxaeq-mode' is set to "manual", provides the RX
  38   equalizer value that should be used. Allowed range is 0..63.
  39
  40 Example
  41         sata-phy@f0458100 {
  42                 compatible = "brcm,bcm7445-sata-phy", "brcm,phy-sata3";
  43                 reg = <0xf0458100 0x1e00>, <0xf045804c 0x10>;
  44                 reg-names = "phy";
  45                 #address-cells = <1>;
  46                 #size-cells = <0>;
  47
  48                 sata-phy@0 {
  49                         reg = <0>;
  50                         #phy-cells = <0>;
  51                 };
  52
  53                 sata-phy@1 {
  54                         reg = <1>;
  55                         #phy-cells = <0>;
  56                 };
  57         };