sff,sfp.txt

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    1 Small Form Factor (SFF) Committee Small Form-factor Pluggable (SFP)
    2 Transceiver
    3 
    4 Required properties:
    5 
    6 - compatible : must be one of
    7   "sff,sfp" for SFP modules
    8   "sff,sff" for soldered down SFF modules
    9 
   10 - i2c-bus : phandle of an I2C bus controller for the SFP two wire serial
   11   interface
   12 
   13 Optional Properties:
   14 
   15 - mod-def0-gpios : GPIO phandle and a specifier of the MOD-DEF0 (AKA Mod_ABS)
   16   module presence input gpio signal, active (module absent) high. Must
   17   not be present for SFF modules
   18 
   19 - los-gpios : GPIO phandle and a specifier of the Receiver Loss of Signal
   20   Indication input gpio signal, active (signal lost) high
   21 
   22 - tx-fault-gpios : GPIO phandle and a specifier of the Module Transmitter
   23   Fault input gpio signal, active (fault condition) high
   24 
   25 - tx-disable-gpios : GPIO phandle and a specifier of the Transmitter Disable
   26   output gpio signal, active (Tx disable) high
   27 
   28 - rate-select0-gpios : GPIO phandle and a specifier of the Rx Signaling Rate
   29   Select (AKA RS0) output gpio signal, low: low Rx rate, high: high Rx rate
   30   Must not be present for SFF modules
   31 
   32 - rate-select1-gpios : GPIO phandle and a specifier of the Tx Signaling Rate
   33   Select (AKA RS1) output gpio signal (SFP+ only), low: low Tx rate, high:
   34   high Tx rate. Must not be present for SFF modules
   35 
   36 - maximum-power-milliwatt : Maximum module power consumption
   37   Specifies the maximum power consumption allowable by a module in the
   38   slot, in milli-Watts.  Presently, modules can be up to 1W, 1.5W or 2W.
   39 
   40 Example #1: Direct serdes to SFP connection
   41 
   42 sfp_eth3: sfp-eth3 {
   43         compatible = "sff,sfp";
   44         i2c-bus = <&sfp_1g_i2c>;
   45         los-gpios = <&cpm_gpio2 22 GPIO_ACTIVE_HIGH>;
   46         mod-def0-gpios = <&cpm_gpio2 21 GPIO_ACTIVE_LOW>;
   47         maximum-power-milliwatt = <1000>;
   48         pinctrl-names = "default";
   49         pinctrl-0 = <&cpm_sfp_1g_pins &cps_sfp_1g_pins>;
   50         tx-disable-gpios = <&cps_gpio1 24 GPIO_ACTIVE_HIGH>;
   51         tx-fault-gpios = <&cpm_gpio2 19 GPIO_ACTIVE_HIGH>;
   52 };
   53 
   54 &cps_emac3 {
   55         phy-names = "comphy";
   56         phys = <&cps_comphy5 0>;
   57         sfp = <&sfp_eth3>;
   58 };
   59 
   60 Example #2: Serdes to PHY to SFP connection
   61 
   62 sfp_eth0: sfp-eth0 {
   63         compatible = "sff,sfp";
   64         i2c-bus = <&sfpp0_i2c>;
   65         los-gpios = <&cps_gpio1 28 GPIO_ACTIVE_HIGH>;
   66         mod-def0-gpios = <&cps_gpio1 27 GPIO_ACTIVE_LOW>;
   67         pinctrl-names = "default";
   68         pinctrl-0 = <&cps_sfpp0_pins>;
   69         tx-disable-gpios = <&cps_gpio1 29 GPIO_ACTIVE_HIGH>;
   70         tx-fault-gpios  = <&cps_gpio1 26 GPIO_ACTIVE_HIGH>;
   71 };
   72 
   73 p0_phy: ethernet-phy@0 {
   74         compatible = "ethernet-phy-ieee802.3-c45";
   75         pinctrl-names = "default";
   76         pinctrl-0 = <&cpm_phy0_pins &cps_phy0_pins>;
   77         reg = <0>;
   78         interrupt = <&cpm_gpio2 18 IRQ_TYPE_EDGE_FALLING>;
   79         sfp = <&sfp_eth0>;
   80 };
   81 
   82 &cpm_eth0 {
   83         phy = <&p0_phy>;
   84         phy-mode = "10gbase-kr";
   85 };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/net/sff,sfp.txt

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sys/contrib/device-tree/Bindings/net/sff,sfp.txt